Convert.ToSingle 메서드

정의

지정된 값을 단정밀도 부동 소수점 숫자로 변환합니다.

오버로드

ToSingle(String, IFormatProvider)

지정된 문화권별 서식 지정 정보를 사용하여, 숫자의 지정된 문자열 표현을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(Object, IFormatProvider)

지정된 문화권별 서식 지정 정보를 사용하여, 지정된 개체의 값을 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(UInt64)

지정된 64비트 부호 없는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(UInt32)

지정된 32비트 부호 없는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(UInt16)

지정된 16비트 부호 없는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(String)

숫자의 지정된 문자열 표현을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(Single)

지정된 단정밀도 부동 소수점 숫자를 실제 변환 작업 없이 반환합니다.

ToSingle(SByte)

지정된 8비트 부호 있는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(Object)

지정된 개체의 값을 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(Int32)

지정된 32비트 부호 있는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(Int16)

지정된 16비트 부호 있는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(Double)

지정된 배정밀도 부동 소수점 숫자 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(Decimal)

지정된 10진수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(DateTime)

이 메서드를 호출하면 InvalidCastException이 항상 throw됩니다.

ToSingle(Char)

이 메서드를 호출하면 InvalidCastException이 항상 throw됩니다.

ToSingle(Byte)

지정된 8비트 부호 없는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(Boolean)

지정된 부울 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(Int64)

지정된 64비트 부호 있는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

ToSingle(String, IFormatProvider)

지정된 문화권별 서식 지정 정보를 사용하여, 숫자의 지정된 문자열 표현을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(System::String ^ value, IFormatProvider ^ provider);
public static float ToSingle (string value, IFormatProvider provider);
public static float ToSingle (string? value, IFormatProvider? provider);
static member ToSingle : string * IFormatProvider -> single
Public Shared Function ToSingle (value As String, provider As IFormatProvider) As Single

매개 변수

value
String

변환할 숫자가 포함된 문자열입니다.

provider
IFormatProvider

문화권별 형식 정보를 제공하는 개체입니다.

반환

Single

value의 숫자에 해당하는 단정밀도 부동 소수점 숫자이거나, valuenull이면 0입니다.

예외

value는 유효한 형식의 숫자가 아닙니다.

valueSingle.MinValue 보다 작거나 Single.MaxValue보다 큰 숫자를 나타냅니다.

예제

다음 예제에서는 숫자 문자열 배열의 요소를 값으로 변환할 때 en-US 및 fr-FR 문화권을 나타내는 개체를 Single 사용합니다IFormatProvider.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      string[] values = { "123456789", "12345.6789", "12 345,6789",
                          "123,456.789", "123 456,789", "123,456,789.0123",
                          "123 456 789,0123", "1.235e12", "1.03221e-05",
                          Double.MaxValue.ToString() };
      CultureInfo[] cultures = { new CultureInfo("en-US"),
                                 new CultureInfo("fr-FR") };

      foreach (CultureInfo culture in cultures)
      {
         Console.WriteLine("String -> Single Conversion Using the {0} Culture",
                           culture.Name);
         foreach (string value in values)
         {
            Console.Write("{0,22}  ->  ", value);
            try {
               Console.WriteLine(Convert.ToSingle(value, culture));
            }
            catch (FormatException) {
               Console.WriteLine("FormatException");
            }
            catch (OverflowException) {
               Console.WriteLine("OverflowException");
            }
         }
         Console.WriteLine();
      }
   }
}
// The example displays the following output:
//    String -> Single Conversion Using the en-US Culture
//                 123456789  ->  1.234568E+08
//                12345.6789  ->  12345.68
//               12 345,6789  ->  FormatException
//               123,456.789  ->  123456.8
//               123 456,789  ->  FormatException
//          123,456,789.0123  ->  1.234568E+08
//          123 456 789,0123  ->  FormatException
//                  1.235e12  ->  1.235E+12
//               1.03221e-05  ->  1.03221E-05
//     1.79769313486232E+308  ->  Overflow
//
//    String -> Single Conversion Using the fr-FR Culture
//                 123456789  ->  1.234568E+08
//                12345.6789  ->  FormatException
//               12 345,6789  ->  12345.68
//               123,456.789  ->  FormatException
//               123 456,789  ->  123456.8
//          123,456,789.0123  ->  FormatException
//          123 456 789,0123  ->  1.234568E+08
//                  1.235e12  ->  FormatException
//               1.03221e-05  ->  FormatException
//     1.79769313486232E+308  ->  FormatException
open System
open System.Globalization

let values =
    [| "123456789"; "12345.6789"; "12 345,6789"
       "123,456.789"; "123 456,789"; "123,456,789.0123"
       "123 456 789,0123"; "1.235e12"; "1.03221e-05"
       string Double.MaxValue |]
let cultures =
    [| CultureInfo "en-US"; CultureInfo "fr-FR" |]

for culture in cultures do
    printfn $"String -> Single Conversion Using the {culture.Name} Culture"
    for value in values do
        printf $"{value,22}  ->  "
        try
            printfn $"{Convert.ToSingle(value, culture)}"
        with
        | :? FormatException ->
            printfn "FormatException"
        | :? OverflowException ->
            printfn "OverflowException"
    printfn ""
// The example displays the following output:
//    String -> Single Conversion Using the en-US Culture
//                 123456789  ->  1.234568E+08
//                12345.6789  ->  12345.68
//               12 345,6789  ->  FormatException
//               123,456.789  ->  123456.8
//               123 456,789  ->  FormatException
//          123,456,789.0123  ->  1.234568E+08
//          123 456 789,0123  ->  FormatException
//                  1.235e12  ->  1.235E+12
//               1.03221e-05  ->  1.03221E-05
//     1.79769313486232E+308  ->  Overflow
//
//    String -> Single Conversion Using the fr-FR Culture
//                 123456789  ->  1.234568E+08
//                12345.6789  ->  FormatException
//               12 345,6789  ->  12345.68
//               123,456.789  ->  FormatException
//               123 456,789  ->  123456.8
//          123,456,789.0123  ->  FormatException
//          123 456 789,0123  ->  1.234568E+08
//                  1.235e12  ->  FormatException
//               1.03221e-05  ->  FormatException
//     1.79769313486232E+308  ->  FormatException
Imports System.Globalization

Module Example
   Public Sub Main()
      Dim values() As String = { "123456789", "12345.6789", "12 345,6789", _
                                 "123,456.789", "123 456,789", "123,456,789.0123", _
                                 "123 456 789,0123", "1.235e12", "1.03221e-05", _
                                 Double.MaxValue.ToString() }
      Dim cultures() As CultureInfo = { New CultureInfo("en-US"), _
                                        New CultureInfo("fr-FR") } 

      For Each culture As CultureInfo In cultures
         Console.WriteLine("String -> Single Conversion Using the {0} Culture", _
                           culture.Name)
         For Each value As String In values
            Console.Write("{0,22}  ->  ", value)
            Try
               Console.WriteLine(Convert.ToSingle(value, culture))
            Catch e As FormatException
               Console.WriteLine("FormatException")
            CAtch e As OverflowException
               Console.WriteLine("Overflow")
            End Try   
         Next
         Console.WriteLine()
      Next                     
   End Sub
End Module
' The example displays the following output:
'    String -> Single Conversion Using the en-US Culture
'                 123456789  ->  1.234568E+08
'                12345.6789  ->  12345.68
'               12 345,6789  ->  FormatException
'               123,456.789  ->  123456.8
'               123 456,789  ->  FormatException
'          123,456,789.0123  ->  1.234568E+08
'          123 456 789,0123  ->  FormatException
'                  1.235e12  ->  1.235E+12
'               1.03221e-05  ->  1.03221E-05
'     1.79769313486232E+308  ->  Overflow
'    
'    String -> Single Conversion Using the fr-FR Culture
'                 123456789  ->  1.234568E+08
'                12345.6789  ->  FormatException
'               12 345,6789  ->  12345.68
'               123,456.789  ->  FormatException
'               123 456,789  ->  123456.8
'          123,456,789.0123  ->  FormatException
'          123 456 789,0123  ->  1.234568E+08
'                  1.235e12  ->  FormatException
'               1.03221e-05  ->  FormatException
'     1.79769313486232E+308  ->  FormatException

설명

반환 값은 메서드를 호출한 Single.Parse 결과입니다 value.

provider 는 개체를 IFormatProvider 가져오는 인스턴스입니다 NumberFormatInfo . 개체는 NumberFormatInfo 형식에 대한 value문화권별 정보를 제공합니다. 이 nullNumberFormatInfo 경우 provider 현재 문화권에 대한 문화권이 사용됩니다.

변환이 실패하는 경우 예외를 처리하지 않으려는 경우 대신 메서드를 호출할 Single.TryParse 수 있습니다. 변환이 성공했는지 실패했는지 여부를 나타내는 값을 반환 Boolean 합니다.

적용 대상

ToSingle(Object, IFormatProvider)

지정된 문화권별 서식 지정 정보를 사용하여, 지정된 개체의 값을 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(System::Object ^ value, IFormatProvider ^ provider);
public static float ToSingle (object value, IFormatProvider provider);
public static float ToSingle (object? value, IFormatProvider? provider);
static member ToSingle : obj * IFormatProvider -> single
Public Shared Function ToSingle (value As Object, provider As IFormatProvider) As Single

매개 변수

value
Object

IConvertible 인터페이스를 구현하는 개체

provider
IFormatProvider

문화권별 형식 정보를 제공하는 개체입니다.

반환

Single

value에 해당하는 단정밀도 부동 소수점 숫자이거나, valuenull이면 0입니다.

예외

value가 적절한 형식이 아닙니다.

valueIConvertible를 구현하지 않습니다.

valueSingle.MinValue 보다 작거나 Single.MaxValue보다 큰 숫자를 나타냅니다.

예제

다음 예제에서는 Temperature 인터페이스를 구현하는 IConvertible 클래스를 정의합니다. 메서드의 구현은 IConvertible.ToSingle 온도를 나타내는 프라이빗 Single 변수의 내부 값을 반환합니다.

using System;
using System.Globalization;

public class Temperature : IConvertible
{
   private float m_Temp;

   public Temperature(float temperature)
   {
      this.m_Temp = temperature;
   }

   public float Celsius
   {
      get { return this.m_Temp; }
   }

   public float Kelvin
   {
      get { return this.m_Temp + 273.15f; }
   }

   public float Fahrenheit
   {
      get { return (float) Math.Round(this.m_Temp * 9 / 5 + 32, 2); }
   }

   public override string ToString()
   {
      return m_Temp.ToString("N2") + " °C";
   }

   // IConvertible implementations.
   public TypeCode GetTypeCode()
   {
      return TypeCode.Object;
   }

   public bool ToBoolean(IFormatProvider provider)
   {
      if (m_Temp == 0)
         return false;
      else
         return true;
   }

   public byte ToByte(IFormatProvider provider)
   {
      if (m_Temp < Byte.MinValue || m_Temp > Byte.MaxValue)
         throw new OverflowException(String.Format("{0} is out of range of the Byte type.",
                                                   this.m_Temp));
      else
         return Convert.ToByte(this.m_Temp);
   }

   public char ToChar(IFormatProvider provider)
   {
      throw new InvalidCastException("Temperature to Char conversion is not supported.");
   }

   public DateTime ToDateTime(IFormatProvider provider)
   {
      throw new InvalidCastException("Temperature to DateTime conversion is not supported.");
   }

   public decimal ToDecimal(IFormatProvider provider)
   {
      return Convert.ToDecimal(this.m_Temp);
   }

   public double ToDouble(IFormatProvider provider)
   {
      return Convert.ToDouble(this.m_Temp);
   }

   public short ToInt16(IFormatProvider provider)
   {
      if (this.m_Temp < Int16.MinValue || this.m_Temp > Int16.MaxValue)
         throw new OverflowException(String.Format("{0} is out of range of the Int16 type.",
                                                   this.m_Temp));
      else
         return Convert.ToInt16(this.m_Temp);
   }

   public int ToInt32(IFormatProvider provider)
      {
      if (this.m_Temp < Int32.MinValue || this.m_Temp > Int32.MaxValue)
         throw new OverflowException(String.Format("{0} is out of range of the Int32 type.",
                                                   this.m_Temp));
      else
         return Convert.ToInt32(this.m_Temp);
   }

   public long ToInt64(IFormatProvider provider)
   {
      if (this.m_Temp < Int64.MinValue || this.m_Temp > Int64.MaxValue)
         throw new OverflowException(String.Format("{0} is out of range of the Int64 type.",
                                                   this.m_Temp));
      else
         return Convert.ToInt64(this.m_Temp);
   }

   public sbyte ToSByte(IFormatProvider provider)
   {
      if (this.m_Temp < SByte.MinValue || this.m_Temp > SByte.MaxValue)
         throw new OverflowException(String.Format("{0} is out of range of the SByte type.",
                                                   this.m_Temp));
      else
         return Convert.ToSByte(this.m_Temp);
   }

   public float ToSingle(IFormatProvider provider)
   {
      return this.m_Temp;
   }

   public string ToString(IFormatProvider provider)
   {
      return m_Temp.ToString("N2", provider) + " °C";
   }

   public object ToType(Type conversionType, IFormatProvider provider)
   {
      switch (Type.GetTypeCode(conversionType))
      {
         case TypeCode.Boolean:
            return this.ToBoolean(null);
         case TypeCode.Byte:
            return this.ToByte(null);
         case TypeCode.Char:
            return this.ToChar(null);
         case TypeCode.DateTime:
            return this.ToDateTime(null);
         case TypeCode.Decimal:
            return this.ToDecimal(null);
         case TypeCode.Double:
            return this.ToDouble(null);
         case TypeCode.Int16:
            return this.ToInt16(null);
         case TypeCode.Int32:
            return this.ToInt32(null);
         case TypeCode.Int64:
            return this.ToInt64(null);
         case TypeCode.Object:
            if (typeof(Temperature).Equals(conversionType))
               return this;
            else
               throw new InvalidCastException(String.Format("Conversion to a {0} is not supported.",
                                                            conversionType.Name));
         case TypeCode.SByte:
            return this.ToSByte(null);
         case TypeCode.Single:
            return this.ToSingle(null);
         case TypeCode.String:
            return this.ToString(provider);
         case TypeCode.UInt16:
            return this.ToUInt16(null);
         case TypeCode.UInt32:
            return this.ToUInt32(null);
         case TypeCode.UInt64:
            return this.ToUInt64(null);
         default:
            throw new InvalidCastException(String.Format("Conversion to {0} is not supported.", conversionType.Name));
      }
   }

   public ushort ToUInt16(IFormatProvider provider)
   {
      if (this.m_Temp < UInt16.MinValue || this.m_Temp > UInt16.MaxValue)
         throw new OverflowException(String.Format("{0} is out of range of the UInt16 type.",
                                                   this.m_Temp));
      else
         return Convert.ToUInt16(this.m_Temp);
   }

   public uint ToUInt32(IFormatProvider provider)
   {
      if (this.m_Temp < UInt32.MinValue || this.m_Temp > UInt32.MaxValue)
         throw new OverflowException(String.Format("{0} is out of range of the UInt32 type.",
                                                   this.m_Temp));
      else
         return Convert.ToUInt32(this.m_Temp);
   }

   public ulong ToUInt64(IFormatProvider provider)
   {
      if (this.m_Temp < UInt64.MinValue || this.m_Temp > UInt64.MaxValue)
         throw new OverflowException(String.Format("{0} is out of range of the UInt64 type.",
                                                   this.m_Temp));
      else
         return Convert.ToUInt64(this.m_Temp);
   }
}
open System

type Temperature(temperature: float32) =
    member _.Celsius =
        temperature

    member _.Kelvin =
        temperature + 273.15f

    member _.Fahrenheit =
        MathF.Round(temperature * 9f / 5f + 32f, 2)

    override _.ToString() =
        $"{temperature:N2} °C"

    // IConvertible implementations.
    interface IConvertible with

        member _.GetTypeCode() =
            TypeCode.Object

        member _.ToBoolean(provider: IFormatProvider) =
            temperature <> 0f

        member _.ToByte(provider: IFormatProvider) =
            if temperature < float32 Byte.MinValue || temperature > float32 Byte.MaxValue then
                raise (OverflowException $"{temperature} is out of range of the Byte type.")
            else
                Convert.ToByte temperature

        member _.ToChar(provider: IFormatProvider) =
            raise (InvalidCastException "Temperature to Char conversion is not supported.")

        member _.ToDateTime(provider: IFormatProvider) =
            raise (InvalidCastException "Temperature to DateTime conversion is not supported.")

        member _.ToDecimal(provider: IFormatProvider) =
            Convert.ToDecimal temperature

        member _.ToDouble(provider: IFormatProvider) =
            Convert.ToDouble temperature

        member _.ToInt16(provider: IFormatProvider) =
            if temperature < float32 Int16.MinValue || temperature > float32 Int16.MaxValue then
                raise (OverflowException $"{temperature} is out of range of the Int16 type.")
            else
                Convert.ToInt16 temperature

        member _.ToInt32(provider: IFormatProvider) =
            if temperature < float32 Int32.MinValue || temperature > float32 Int32.MaxValue then
                raise (OverflowException $"{temperature} is out of range of the Int32 type.")
            else
                Convert.ToInt32 temperature

        member _.ToInt64(provider: IFormatProvider) =
            if float32 temperature < float32 Int64.MinValue || temperature > float32 Int64.MaxValue then
                raise (OverflowException $"{temperature} is out of range of the Int64 type.")
            else
                Convert.ToInt64 temperature

        member _.ToSByte(provider: IFormatProvider) =
            if temperature < float32 SByte.MinValue || temperature > float32 SByte.MaxValue then
                raise (OverflowException $"{temperature} is out of range of the SByte type.")
            else
                Convert.ToSByte temperature

        member _.ToSingle(provider: IFormatProvider) =
            temperature

        override _.ToString(provider: IFormatProvider) =
            temperature.ToString("N2", provider) + " °C"

        member this.ToType(conversionType: Type, provider: IFormatProvider) =
            let this = this :> IConvertible
            match Type.GetTypeCode conversionType with
            | TypeCode.Boolean ->
                this.ToBoolean null
            | TypeCode.Byte ->
                this.ToByte null
            | TypeCode.Char ->
                this.ToChar null
            | TypeCode.DateTime ->
                this.ToDateTime null
            | TypeCode.Decimal ->
                this.ToDecimal null
            | TypeCode.Double ->
                this.ToDouble null
            | TypeCode.Int16 ->
                this.ToInt16 null
            | TypeCode.Int32 ->
                this.ToInt32 null
            | TypeCode.Int64 ->
                this.ToInt64 null
            | TypeCode.Object ->
                if typeof<Temperature>.Equals conversionType then
                    this
                else
                    raise (InvalidCastException $"Conversion to a {conversionType.Name} is not supported.")
            | TypeCode.SByte ->
                this.ToSByte null
            | TypeCode.Single ->
                this.ToSingle null
            | TypeCode.String ->
                this.ToString provider
            | TypeCode.UInt16 ->
                this.ToUInt16 null
            | TypeCode.UInt32 ->
                this.ToUInt32 null
            | TypeCode.UInt64 ->
                this.ToUInt64 null
            | _ ->
                    raise (InvalidCastException $"Conversion to {conversionType.Name} is not supported.")

        member _.ToUInt16(provider: IFormatProvider) =
            if temperature < float32 UInt16.MinValue || temperature > float32 UInt16.MaxValue then
                raise (OverflowException $"{temperature} is out of range of the UInt16 type.")
            else
                Convert.ToUInt16 temperature

        member _.ToUInt32(provider: IFormatProvider) =
            if temperature < float32 UInt32.MinValue || temperature > float32 UInt32.MaxValue then
                raise (OverflowException $"{temperature} is out of range of the UInt32 type.")
            else
                Convert.ToUInt32 temperature

        member _.ToUInt64(provider: IFormatProvider) =
            if temperature < float32 UInt64.MinValue || temperature > float32 UInt64.MaxValue then
                raise (OverflowException $"{temperature} is out of range of the UInt64 type.")
            else
                Convert.ToUInt64 temperature
Imports System.Globalization

Public Class Temperature : Implements IConvertible
   Private m_Temp As Single

   Public Sub New(temperature As Single)
      Me.m_Temp = temperature
   End Sub
   
   Public ReadOnly Property Celsius() As Single
      Get
         Return Me.m_Temp
      End Get   
   End Property
   
   Public ReadOnly Property Kelvin() As Single
      Get
         Return Me.m_Temp + 273.15F
      End Get
   End Property
   
   Public ReadOnly Property Fahrenheit() As Single
      Get
         Return CSng(Math.Round(Me.m_Temp * 9 / 5 + 32, 2))
      End Get      
   End Property
   
   Public Overrides Function ToString() As String
      Return m_Temp.ToString("N2") & " °C"
   End Function

   ' IConvertible implementations.
   Public Function GetTypeCode() As TypeCode _
                   Implements IConvertible.GetTypeCode
      Return TypeCode.Object
   End Function
   
   Public Function ToBoolean(provider As IFormatProvider) As Boolean _
                   Implements IConvertible.ToBoolean
      If m_Temp = 0 Then
         Return False
      Else
         Return True
      End If
   End Function 
   
   Public Function ToByte(provider As IFormatProvider) As Byte _
                   Implements IConvertible.ToByte
      If m_Temp < Byte.MinValue Or m_Temp > Byte.MaxValue Then
         Throw New OverflowException(String.Format("{0} is out of range of the Byte type.", _ 
                                                   Me.m_Temp)) 
      Else
         Return Convert.ToByte(Me.m_Temp)
      End If       
   End Function
   
   Public Function ToChar(provider As IFormatProvider) As Char _
                   Implements IConvertible.ToChar
      Throw New InvalidCastException("Temperature to Char conversion is not supported.")
   End Function 
   
   Public Function ToDateTime(provider As IFormatProvider) As Date _
                   Implements IConvertible.ToDateTime
      Throw New InvalidCastException("Temperature to DateTime conversion is not supported.")
   End Function
   
   Public Function ToDecimal(provider As IFormatProvider) As Decimal _
                   Implements IConvertible.ToDecimal
      Return Convert.ToDecimal(Me.m_Temp)
   End Function
   
   Public Function ToDouble(provider As IFormatProvider) As Double _
                   Implements IConvertible.ToDouble
      Return Convert.ToDouble(Me.m_Temp)
   End Function   
   
   Public Function ToInt16(provider As IFormatProvider) As Int16 _
                   Implements IConvertible.ToInt16
      If Me.m_Temp < Int16.MinValue Or Me.m_Temp > Int16.MaxValue Then
         Throw New OverflowException(String.Format("{0} is out of range of the Int16 type.", _
                                                   Me.m_Temp))
      Else
         Return Convert.ToInt16(Me.m_Temp)   
      End If
   End Function
   
   Public Function ToInt32(provider As IFormatProvider) As Int32 _
                   Implements IConvertible.ToInt32
      If Me.m_Temp < Int32.MinValue Or Me.m_Temp > Int32.MaxValue Then
         Throw New OverflowException(String.Format("{0} is out of range of the Int32 type.", _
                                                   Me.m_Temp))
      Else
         Return Convert.ToInt32(Me.m_Temp)
      End If      
   End Function
   
   Public Function ToInt64(provider As IFormatProvider) As Int64 _
                   Implements IConvertible.ToInt64
      If Me.m_Temp < Int64.MinValue Or Me.m_Temp > Int64.MaxValue Then
         Throw New OverflowException(String.Format("{0} is out of range of the Int64 type.", _
                                                   Me.m_Temp))
      Else
         Return Convert.ToInt64(Me.m_Temp)
      End If      
   End Function
   
   Public Function ToSByte(provider As IFormatProvider) As SByte _
                   Implements IConvertible.ToSByte
      If Me.m_Temp < SByte.MinValue Or Me.m_Temp > SByte.MaxValue Then
         Throw New OverflowException(String.Format("{0} is out of range of the SByte type.", _
                                                   Me.m_Temp))
      Else
         Return Convert.ToSByte(Me.m_Temp)
      End If      
   End Function

   Public Function ToSingle(provider As IFormatProvider) As Single _
                   Implements IConvertible.ToSingle
      Return Me.m_Temp
   End Function

   Public Overloads Function ToString(provider As IFormatProvider) As String _
                   Implements IConvertible.ToString
      Return m_Temp.ToString("N2", provider) & " °C"
   End Function
   
   Public Function ToType(conversionType As Type, provider As IFormatProvider) As Object _
                   Implements IConvertible.ToType
      Select Case Type.GetTypeCode(conversionType)
         Case TypeCode.Boolean 
            Return Me.ToBoolean(Nothing)
         Case TypeCode.Byte
            Return Me.ToByte(Nothing)
         Case TypeCode.Char
            Return Me.ToChar(Nothing)
         Case TypeCode.DateTime
            Return Me.ToDateTime(Nothing)
         Case TypeCode.Decimal
            Return Me.ToDecimal(Nothing)
         Case TypeCode.Double
            Return Me.ToDouble(Nothing)
         Case TypeCode.Int16
            Return Me.ToInt16(Nothing)
         Case TypeCode.Int32
            Return Me.ToInt32(Nothing)
         Case TypeCode.Int64
            Return Me.ToInt64(Nothing)
         Case TypeCode.Object
            If GetType(Temperature).Equals(conversionType) Then
               Return Me
            Else
               Throw New InvalidCastException(String.Format("Conversion to a {0} is not supported.", _
                                                            conversionType.Name))
            End If 
         Case TypeCode.SByte
            Return Me.ToSByte(Nothing)
         Case TypeCode.Single
            Return Me.ToSingle(Nothing)
         Case TypeCode.String
            Return Me.ToString(provider)
         Case TypeCode.UInt16
            Return Me.ToUInt16(Nothing)
         Case TypeCode.UInt32
            Return Me.ToUInt32(Nothing)
         Case TypeCode.UInt64
            Return Me.ToUInt64(Nothing)   
         Case Else
            Throw New InvalidCastException(String.Format("Conversion to {0} is not supported.", conversionType.Name))   
      End Select
   End Function
   
   Public Function ToUInt16(provider As IFormatProvider) As UInt16 _
                   Implements IConvertible.ToUInt16
      If Me.m_Temp < UInt16.MinValue Or Me.m_Temp > UInt16.MaxValue Then
         Throw New OverflowException(String.Format("{0} is out of range of the UInt16 type.", _
                                                   Me.m_Temp))
      Else
         Return Convert.ToUInt16(Me.m_Temp)
      End If   
   End Function

   Public Function ToUInt32(provider As IFormatProvider) As UInt32 _
                   Implements IConvertible.ToUInt32
      If Me.m_Temp < UInt32.MinValue Or Me.m_Temp > UInt32.MaxValue Then
         Throw New OverflowException(String.Format("{0} is out of range of the UInt32 type.", _
                                                   Me.m_Temp))
      Else
         Return Convert.ToUInt32(Me.m_Temp)
      End If   
   End Function
   
   Public Function ToUInt64(provider As IFormatProvider) As UInt64 _
                   Implements IConvertible.ToUInt64
      If Me.m_Temp < UInt64.MinValue Or Me.m_Temp > UInt64.MaxValue Then
         Throw New OverflowException(String.Format("{0} is out of range of the UInt64 type.", _
                                                   Me.m_Temp))
      Else
         Return Convert.ToUInt64(Me.m_temp)
      End If   
   End Function
End Class

다음 예제에서는 메서드에 대한 호출이 Convert.ToSingle(Object, IFormatProvider) 클래스의 Temperature 구현을 호출하는 IConvertible.ToSingle 방법을 보여 줍니다.

public class Example
{
   public static void Main()
   {
      Temperature cold = new Temperature(-40);
      Temperature freezing = new Temperature(0);
      Temperature boiling = new Temperature(100);

      Console.WriteLine(Convert.ToInt32(cold, null));
      Console.WriteLine(Convert.ToInt32(freezing, null));
      Console.WriteLine(Convert.ToDouble(boiling, null));
   }
}
// The example dosplays the following output:
//       -40
//       0
//       100
let cold = Temperature -40f
let freezing = Temperature 0f
let boiling = Temperature 100f

printfn $"{Convert.ToInt32(cold, null)}"
printfn $"{Convert.ToInt32(freezing, null)}"
printfn $"{Convert.ToDouble(boiling, null)}"
// The example dosplays the following output:
//       -40
//       0
//       100
Module Example
   Public Sub Main()
      Dim cold As New Temperature(-40)
      Dim freezing As New Temperature(0)
      Dim boiling As New Temperature(100)
      
      Console.WriteLine(Convert.ToInt32(cold, Nothing))
      Console.WriteLine(Convert.ToInt32(freezing, Nothing))
      Console.WriteLine(Convert.ToDouble(boiling, Nothing))
   End Sub
End Module
' The example displays the following output:
'       -40
'       0
'       100

설명

반환 값은 기본 형식의 메서드를 IConvertible.ToSingle 호출한 결과입니다 value.

provider 을 사용하면 사용자가 해당 내용에 대한 문화권별 변환 정보를 지정할 수 있습니다 value. 예를 들어 숫자를 나타내는 경우 value String 해당 숫자를 provider 나타내는 데 사용되는 표기법에 대한 문화권별 정보를 제공할 수 있습니다.

기본 형식은 무시 provider합니다. 그러나 인터페이스를 구현하는 사용자 정의 형식인 경우 value 매개 변수를 IConvertible 사용할 수 있습니다.

적용 대상

ToSingle(UInt64)

중요

이 API는 CLS 규격이 아닙니다.

지정된 64비트 부호 없는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(System::UInt64 value);
[System.CLSCompliant(false)]
public static float ToSingle (ulong value);
[<System.CLSCompliant(false)>]
static member ToSingle : uint64 -> single
Public Shared Function ToSingle (value As ULong) As Single

매개 변수

value
UInt64

변환할 64비트 부호 없는 정수입니다.

반환

Single

value에 해당하는 단정밀도 부동 소수점 숫자입니다.

특성

예제

다음 예제에서는 부호 없는 긴 정수 배열의 각 요소를 값으로 Single 변환합니다.

ulong[] numbers = { UInt64.MinValue, 121, 12345, UInt64.MaxValue };
float result;

foreach (ulong number in numbers)
{
   result = Convert.ToSingle(number);
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                     number.GetType().Name, number,
                     result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the UInt64 value '0' to the Single value 0.
//    Converted the UInt64 value '121' to the Single value 121.
//    Converted the UInt64 value '12345' to the Single value 12345.
//    Converted the UInt64 value '18446744073709551615' to the Single value 1.844674E+19.
let numbers = [| UInt64.MinValue; 121uL; 12345uL; UInt64.MaxValue |]

for number in numbers do
    let result = Convert.ToSingle number
    printfn $"Converted the {number.GetType().Name} value {number} to the {result.GetType().Name} value {result}."
// The example displays the following output:
//    Converted the UInt64 value '0' to the Single value 0.
//    Converted the UInt64 value '121' to the Single value 121.
//    Converted the UInt64 value '12345' to the Single value 12345.
//    Converted the UInt64 value '18446744073709551615' to the Single value 1.844674E+19.
Dim numbers() As ULong = { UInt64.MinValue, 121, 12345, UInt64.MaxValue }
Dim result As Single

For Each number As ULong In numbers
   result = Convert.ToSingle(number)
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the UInt64 value '0' to the Single value 0.
'    Converted the UInt64 value '121' to the Single value 121.
'    Converted the UInt64 value '12345' to the Single value 12345.
'    Converted the UInt64 value '18446744073709551615' to the Single value 1.844674E+19.

적용 대상

ToSingle(UInt32)

중요

이 API는 CLS 규격이 아닙니다.

지정된 32비트 부호 없는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(System::UInt32 value);
[System.CLSCompliant(false)]
public static float ToSingle (uint value);
[<System.CLSCompliant(false)>]
static member ToSingle : uint32 -> single
Public Shared Function ToSingle (value As UInteger) As Single

매개 변수

value
UInt32

변환할 32비트 부호 없는 정수입니다.

반환

Single

value에 해당하는 단정밀도 부동 소수점 숫자입니다.

특성

예제

다음 예제에서는 부호 없는 정수 배열의 각 요소를 값으로 Single 변환합니다.

uint[] numbers = { UInt32.MinValue, 121, 12345, UInt32.MaxValue };
float result;

foreach (uint number in numbers)
{
   result = Convert.ToSingle(number);
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                     number.GetType().Name, number,
                     result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the UInt32 value '0' to the Single value 0.
//    Converted the UInt32 value '121' to the Single value 121.
//    Converted the UInt32 value '12345' to the Single value 12345.
//    Converted the UInt32 value '4294967295' to the Single value 4.294967E+09.
let numbers = [| UInt32.MinValue; 121u; 12345u; UInt32.MaxValue |]

for number in numbers do
    let result = Convert.ToSingle number
    printfn $"Converted the {number.GetType().Name} value {number} to the {result.GetType().Name} value {result}."
// The example displays the following output:
//    Converted the UInt32 value '0' to the Single value 0.
//    Converted the UInt32 value '121' to the Single value 121.
//    Converted the UInt32 value '12345' to the Single value 12345.
//    Converted the UInt32 value '4294967295' to the Single value 4.294967E+09.
   Dim numbers() As UInteger = { UInt32.MinValue, 121, 12345, UInt32.MaxValue }
   Dim result As Single

   For Each number As UInteger In numbers
      result = Convert.ToSingle(number)
         Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                           number.GetType().Name, number, _
                           result.GetType().Name, result)
   Next
   ' The example displays the following output:
'    Converted the UInt32 value '0' to the Single value 0.
'    Converted the UInt32 value '121' to the Single value 121.
'    Converted the UInt32 value '12345' to the Single value 12345.
'    Converted the UInt32 value '4294967295' to the Single value 4.294967E+09.

적용 대상

ToSingle(UInt16)

중요

이 API는 CLS 규격이 아닙니다.

지정된 16비트 부호 없는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(System::UInt16 value);
[System.CLSCompliant(false)]
public static float ToSingle (ushort value);
[<System.CLSCompliant(false)>]
static member ToSingle : uint16 -> single
Public Shared Function ToSingle (value As UShort) As Single

매개 변수

value
UInt16

변환할 16비트 부호 없는 정수입니다.

반환

Single

value에 해당하는 단정밀도 부동 소수점 숫자입니다.

특성

예제

다음 예제에서는 부호 없는 16비트 정수 배열의 각 요소를 값으로 Single 변환합니다.

ushort[] numbers = { UInt16.MinValue, 121, 12345, UInt16.MaxValue };
float result;

foreach (ushort number in numbers)
{
   result = Convert.ToSingle(number);
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                     number.GetType().Name, number,
                     result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the UInt16 value '0' to the Single value 0.
//    Converted the UInt16 value '121' to the Single value 121.
//    Converted the UInt16 value '12345' to the Single value 12345.
//    Converted the UInt16 value '65535' to the Single value 65535.
let numbers = [| UInt16.MinValue; 121us; 12345us; UInt16.MaxValue |]

for number in numbers do
    let result = Convert.ToSingle number
    printfn $"Converted the {number.GetType().Name} value {number} to the {result.GetType().Name} value {result}."
// The example displays the following output:
//    Converted the UInt16 value '0' to the Single value 0.
//    Converted the UInt16 value '121' to the Single value 121.
//    Converted the UInt16 value '12345' to the Single value 12345.
//    Converted the UInt16 value '65535' to the Single value 65535.
Dim numbers() As UShort = { UInt16.MinValue, 121, 12345, UInt16.MaxValue }
Dim result As Single

For Each number As UShort In numbers
   result = Convert.ToSingle(number)
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the UInt16 value '0' to the Single value 0.
'    Converted the UInt16 value '121' to the Single value 121.
'    Converted the UInt16 value '12345' to the Single value 12345.
'    Converted the UInt16 value '65535' to the Single value 65535.

적용 대상

ToSingle(String)

숫자의 지정된 문자열 표현을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(System::String ^ value);
public static float ToSingle (string value);
public static float ToSingle (string? value);
static member ToSingle : string -> single
Public Shared Function ToSingle (value As String) As Single

매개 변수

value
String

변환할 숫자가 포함된 문자열입니다.

반환

Single

value의 숫자에 해당하는 단정밀도 부동 소수점 숫자이거나, valuenull이면 0입니다.

예외

value는 유효한 형식의 숫자가 아닙니다.

valueSingle.MinValue 보다 작거나 Single.MaxValue보다 큰 숫자를 나타냅니다.

예제

다음 예제에서는 숫자 문자열 배열의 각 요소를 값으로 Single 변환하려고 시도합니다.

string[] values= { "-1,035.77219", "1AFF", "1e-35", "1.63f",
                   "1,635,592,999,999,999,999,999,999", "-17.455",
                   "190.34001", "1.29e325"};
float result;

foreach (string value in values)
{
   try {
      result = Convert.ToSingle(value);
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                        value.GetType().Name, value,
                        result.GetType().Name, result);
   }
   catch (FormatException) {
      Console.WriteLine("Unable to convert '{0}' to a Single.", value);
   }
   catch (OverflowException) {
      Console.WriteLine("'{0}' is outside the range of a Single.", value);
   }
}
// The example displays the following output:
//    Converted the String value '-1,035.77219' to the Single value -1035.772.
//    Unable to convert '1AFF' to a Single.
//    Converted the String value '1e-35' to the Single value 1E-35.
//    Unable to convert '1.63f' to a Single.
//    Converted the String value '1,635,592,999,999,999,999,999,999' to the Single value 1.635593E+24.
//    Converted the String value '-17.455' to the Single value -17.455.
//    Converted the String value '190.34001' to the Single value 190.34.
//    1.29e325' is outside the range of a Single.
let values =
    [| "-1,035.77219"; "1AFF"; "1e-35"; "1.63f"; "1,635,592,999,999,999,999,999,999"
       "-17.455"; "190.34001"; "1.29e325" |]

for value in values do
    try
        let result = Convert.ToSingle value
        printfn $"Converted the {value.GetType().Name} value {value} to the {result.GetType().Name} value {result}."
    with
    | :? FormatException ->
        printfn $"Unable to convert '{value}' to a Single."
    | :? OverflowException ->
        printfn $"'{value}' is outside the range of a Single."
// The example displays the following output:
//    Converted the String value '-1,035.77219' to the Single value -1035.772.
//    Unable to convert '1AFF' to a Single.
//    Converted the String value '1e-35' to the Single value 1E-35.
//    Unable to convert '1.63f' to a Single.
//    Converted the String value '1,635,592,999,999,999,999,999,999' to the Single value 1.635593E+24.
//    Converted the String value '-17.455' to the Single value -17.455.
//    Converted the String value '190.34001' to the Single value 190.34.
//    1.29e325' is outside the range of a Single.
Dim values() As String = { "-1,035.77219", "1AFF", "1e-35", "1.63f",
                           "1,635,592,999,999,999,999,999,999", "-17.455",
                           "190.34001", "1.29e325"}
Dim result As Single

For Each value As String In values
   Try
      result = Convert.ToSingle(value)
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                        value.GetType().Name, value, _
                        result.GetType().Name, result)
   Catch e As FormatException
      Console.WriteLine("Unable to convert '{0}' to a Single.", value)
   Catch e As OverflowException
      Console.WriteLine("'{0}' is outside the range of a Single.", value)
   End Try
Next
' The example displays the following output:
'    Converted the String value '-1,035.77219' to the Single value -1035.772.
'    Unable to convert '1AFF' to a Single.
'    Converted the String value '1e-35' to the Single value 1E-35.
'    Unable to convert '1.63f' to a Single.
'    Converted the String value '1,635,592,999,999,999,999,999,999' to the Single value 1.635593E+24.
'    Converted the String value '-17.455' to the Single value -17.455.
'    Converted the String value '190.34001' to the Single value 190.34.
'    '1.29e325' is outside the range of a Single.

설명

메서드를 ToSingle(String) 사용하는 것은 메서드에 전달하는 value 것과 Single.Parse(String) 같습니다. value 는 현재 문화권의 서식 규칙을 사용하여 해석됩니다.

변환이 실패하는 경우 예외를 처리하지 않으려는 경우 대신 메서드를 호출할 Single.TryParse 수 있습니다. 변환이 성공했는지 실패했는지 여부를 나타내는 값을 반환 Boolean 합니다.

적용 대상

ToSingle(Single)

지정된 단정밀도 부동 소수점 숫자를 실제 변환 작업 없이 반환합니다.

public:
 static float ToSingle(float value);
public static float ToSingle (float value);
static member ToSingle : single -> single
Public Shared Function ToSingle (value As Single) As Single

매개 변수

value
Single

반환할 단정밀도 부동 소수점 숫자입니다.

반환

Single

value를 변경하지 않고 반환합니다.

추가 정보

적용 대상

ToSingle(SByte)

중요

이 API는 CLS 규격이 아닙니다.

지정된 8비트 부호 있는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(System::SByte value);
[System.CLSCompliant(false)]
public static float ToSingle (sbyte value);
[<System.CLSCompliant(false)>]
static member ToSingle : sbyte -> single
Public Shared Function ToSingle (value As SByte) As Single

매개 변수

value
SByte

변환할 8비트 부호 있는 정수입니다.

반환

Single

value에 해당하는 8비트 부호 있는 정수입니다.

특성

예제

다음 예제에서는 서명된 바이트 배열의 각 요소를 값으로 Single 변환합니다.

sbyte[] numbers = { SByte.MinValue, -23, 0, 17, SByte.MaxValue };
float result;

foreach (sbyte number in numbers)
{
   result = Convert.ToSingle(number);
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                     number.GetType().Name, number,
                     result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the SByte value '-128' to the Single value -128.
//    Converted the SByte value '-23' to the Single value -23.
//    Converted the SByte value '0' to the Single value 0.
//    Converted the SByte value '17' to the Single value 17.
//    Converted the SByte value '127' to the Single value 127.
let numbers = [| SByte.MinValue; -23y; 0y; 17y; SByte.MaxValue |]

for number in numbers do
    let result = Convert.ToSingle number
    printfn $"Converted the {number.GetType().Name} value {number} to the {result.GetType().Name} value {result}."
// The example displays the following output:
//    Converted the SByte value '-128' to the Single value -128.
//    Converted the SByte value '-23' to the Single value -23.
//    Converted the SByte value '0' to the Single value 0.
//    Converted the SByte value '17' to the Single value 17.
//    Converted the SByte value '127' to the Single value 127.
Dim numbers() As SByte = { SByte.MinValue, -23, 0, 17, SByte.MaxValue }
Dim result As Single

For Each number As SByte In numbers
   result = Convert.ToSingle(number)
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the SByte value '-128' to the Single value -128.
'    Converted the SByte value '-23' to the Single value -23.
'    Converted the SByte value '0' to the Single value 0.
'    Converted the SByte value '17' to the Single value 17.
'    Converted the SByte value '127' to the Single value 127.

적용 대상

ToSingle(Object)

지정된 개체의 값을 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(System::Object ^ value);
public static float ToSingle (object value);
public static float ToSingle (object? value);
static member ToSingle : obj -> single
Public Shared Function ToSingle (value As Object) As Single

매개 변수

value
Object

IConvertible 인터페이스를 구현하는 개체나 null입니다.

반환

Single

value에 해당하는 단정밀도 부동 소수점 숫자이거나, valuenull이면 0입니다.

예외

value가 적절한 형식이 아닙니다.

valueIConvertible 인터페이스를 구현하지 않습니다.

또는

이 변환은 지원되지 않습니다.

valueSingle.MinValue 보다 작거나 Single.MaxValue보다 큰 숫자를 나타냅니다.

예제

다음 예제에서는 개체 배열의 각 요소를 값으로 Single 변환하려고 시도합니다.

object[] values = { true, 'a', 123, 1.764e32, "9.78", "1e-02",
                    1.67e03, "A100", "1,033.67", DateTime.Now,
                    Decimal.MaxValue };
float result;

foreach (object value in values)
{
   try {
      result = Convert.ToSingle(value);
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                        value.GetType().Name, value,
                        result.GetType().Name, result);
   }
   catch (FormatException) {
      Console.WriteLine("The {0} value {1} is not recognized as a valid Single value.",
                        value.GetType().Name, value);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the Single type.",
                        value.GetType().Name, value);
   }
   catch (InvalidCastException) {
      Console.WriteLine("Conversion of the {0} value {1} to a Single is not supported.",
                        value.GetType().Name, value);
   }
}
// The example displays the following output:
//    Converted the Boolean value 'True' to the Single value 1.
//    Conversion of the Char value a to a Single is not supported.
//    Converted the Int32 value '123' to the Single value 123.
//    Converted the Double value '1.764E+32' to the Single value 1.764E+32.
//    Converted the String value '9.78' to the Single value 9.78.
//    Converted the String value '1e-02' to the Single value 0.01.
//    Converted the Double value '1670' to the Single value 1670.
//    The String value A100 is not recognized as a valid Single value.
//    Converted the String value '1,033.67' to the Single value 1033.67.
//    Conversion of the DateTime value 11/7/2008 08:02:35 AM to a Single is not supported.
//    Converted the Decimal value '79228162514264337593543950335' to the Single value 7.922816E+28.
let values: obj[] =
    [| true; 'a'; 123; 1.764e32; "9.78"; "1e-02"; 1.67e03; "A100"; "1,033.67"; DateTime.Now; Decimal.MaxValue |]

for value in values do
    try
        let result = Convert.ToSingle value            
        printfn $"Converted the {value.GetType().Name} value {value} to the {result.GetType().Name} value {result}."
    with
    | :? FormatException ->
        printfn $"The {value.GetType().Name} value {value} is not recognized as a valid Single value."
    | :? OverflowException ->
        printfn $"The {value.GetType().Name} value {value} is outside the range of the Single type."
    | :? InvalidCastException ->
        printfn $"Conversion of the {value.GetType().Name} value {value} to a Single is not supported."
// The example displays the following output:
//    Converted the Boolean value 'True' to the Single value 1.
//    Conversion of the Char value a to a Single is not supported.
//    Converted the Int32 value '123' to the Single value 123.
//    Converted the Double value '1.764E+32' to the Single value 1.764E+32.
//    Converted the String value '9.78' to the Single value 9.78.
//    Converted the String value '1e-02' to the Single value 0.01.
//    Converted the Double value '1670' to the Single value 1670.
//    The String value A100 is not recognized as a valid Single value.
//    Converted the String value '1,033.67' to the Single value 1033.67.
//    Conversion of the DateTime value 11/7/2008 08:02:35 AM to a Single is not supported.
//    Converted the Decimal value '79228162514264337593543950335' to the Single value 7.922816E+28.
Dim values() As Object = { True, "a"c, 123, 1.764e32, "9.78", "1e-02", _
                           1.67e03, "A100", "1,033.67", Date.Now, _
                           Decimal.MaxValue }
Dim result As Single

For Each value As Object In values
   Try
      result = Convert.ToSingle(value)
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                        value.GetType().Name, value, _
                        result.GetType().Name, result)

   Catch e As FormatException
      Console.WriteLine("The {0} value {1} is not recognized as a valid Single value.", _
                        value.GetType().Name, value)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the Single type.", _
                        value.GetType().Name, value)

   Catch e As InvalidCastException
      Console.WriteLine("Conversion of the {0} value {1} to a Single is not supported.", _
                        value.GetType().Name, value)
   End Try
Next
' The example displays the following output:
'    Converted the Boolean value 'True' to the Single value 1.
'    Conversion of the Char value a to a Single is not supported.
'    Converted the Int32 value '123' to the Single value 123.
'    Converted the Double value '1.764E+32' to the Single value 1.764E+32.
'    Converted the String value '9.78' to the Single value 9.78.
'    Converted the String value '1e-02' to the Single value 0.01.
'    Converted the Double value '1670' to the Single value 1670.
'    The String value A100 is not recognized as a valid Single value.
'    Converted the String value '1,033.67' to the Single value 1033.67.
'    Conversion of the DateTime value 11/7/2008 07:56:24 AM to a Single is not supported.
'    Converted the Decimal value '79228162514264337593543950335' to the Single value 7.922816E+28.

설명

반환 값은 기본 형식의 메서드를 IConvertible.ToSingle 호출한 결과입니다 value.

적용 대상

ToSingle(Int32)

지정된 32비트 부호 있는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(int value);
public static float ToSingle (int value);
static member ToSingle : int -> single
Public Shared Function ToSingle (value As Integer) As Single

매개 변수

value
Int32

변환할 32비트 부호 있는 정수입니다.

반환

Single

value에 해당하는 단정밀도 부동 소수점 숫자입니다.

예제

다음 예제에서는 정수 배열의 각 요소를 값으로 Single 변환합니다.

int[] numbers = { Int32.MinValue, -1000, 0, 1000, Int32.MaxValue };
float result;

foreach (int number in numbers)
{
   result = Convert.ToSingle(number);
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                     number.GetType().Name, number,
                     result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the Int32 value '-2147483648' to the Single value -2.147484E+09.
//    Converted the Int32 value '-1000' to the Single value -1000.
//    Converted the Int32 value '0' to the Single value 0.
//    Converted the Int32 value '1000' to the Single value 1000.
//    Converted the Int32 value '2147483647' to the Single value 2.147484E+09.
let numbers = 
    [| Int32.MinValue; -1000; 0; 1000; Int32.MaxValue |]

for number in numbers do
    let result = Convert.ToSingle number
    printfn $"Converted the {number.GetType().Name} value {number} to the {result.GetType().Name} value {result}."
// The example displays the following output:
//    Converted the Int32 value '-2147483648' to the Single value -2.147484E+09.
//    Converted the Int32 value '-1000' to the Single value -1000.
//    Converted the Int32 value '0' to the Single value 0.
//    Converted the Int32 value '1000' to the Single value 1000.
//    Converted the Int32 value '2147483647' to the Single value 2.147484E+09.
Dim numbers() As Integer = { Int32.MinValue, -1000, 0, 1000, Int32.MaxValue }
Dim result As Single

For Each number As Integer In numbers
   result = Convert.ToSingle(number)
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                     number.GetType().Name, number, _
                     result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the Int32 value '-2147483648' to the Single value -2.147484E+09.
'    Converted the Int32 value '-1000' to the Single value -1000.
'    Converted the Int32 value '0' to the Single value 0.
'    Converted the Int32 value '1000' to the Single value 1000.
'    Converted the Int32 value '2147483647' to the Single value 2.147484E+09.

적용 대상

ToSingle(Int16)

지정된 16비트 부호 있는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(short value);
public static float ToSingle (short value);
static member ToSingle : int16 -> single
Public Shared Function ToSingle (value As Short) As Single

매개 변수

value
Int16

변환할 16비트 부호 있는 정수입니다.

반환

Single

value에 해당하는 단정밀도 부동 소수점 숫자입니다.

예제

다음 예제에서는 16비트 정수 배열의 각 요소를 값으로 Single 변환합니다.

short[] numbers = { Int16.MinValue, -1032, 0, 192, Int16.MaxValue };
float result;

foreach (short number in numbers)
{
   result = Convert.ToSingle(number);
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                     number.GetType().Name, number,
                     result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the Int16 value '-32768' to the Single value -32768.
//    Converted the Int16 value '-1032' to the Single value -1032.
//    Converted the Int16 value '0' to the Single value 0.
//    Converted the Int16 value '192' to the Single value 192.
//    Converted the Int16 value '32767' to the Single value 32767.
let numbers = 
    [| Int16.MinValue; -1032s; 0s; 192s; Int16.MaxValue |]

for number in numbers do
    let result = Convert.ToSingle number
    printfn $"Converted the {number.GetType().Name} value {number} to the {result.GetType().Name} value {result}."
// The example displays the following output:
//    Converted the Int16 value '-32768' to the Single value -32768.
//    Converted the Int16 value '-1032' to the Single value -1032.
//    Converted the Int16 value '0' to the Single value 0.
//    Converted the Int16 value '192' to the Single value 192.
//    Converted the Int16 value '32767' to the Single value 32767.
Dim numbers() As Short = { Int16.MinValue, -1032, 0, 192, Int16.MaxValue }
Dim result As Single

For Each number As Short In numbers
   result = Convert.ToSingle(number)
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                     number.GetType().Name, number, _
                     result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the Int16 value '-32768' to the Single value -32768.
'    Converted the Int16 value '-1032' to the Single value -1032.
'    Converted the Int16 value '0' to the Single value 0.
'    Converted the Int16 value '192' to the Single value 192.
'    Converted the Int16 value '32767' to the Single value 32767.

적용 대상

ToSingle(Double)

지정된 배정밀도 부동 소수점 숫자 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(double value);
public static float ToSingle (double value);
static member ToSingle : double -> single
Public Shared Function ToSingle (value As Double) As Single

매개 변수

value
Double

변환할 배정밀도 부동 소수점 숫자입니다.

반환

Single

value에 해당하는 단정밀도 부동 소수점 숫자입니다.

value가 가장 가까운 수로 반올림됩니다. 예를 들어, 소수점 두 자리로 반올림하면 2.345는 2.34가 되고 2.355는 2.36이 됩니다.

예제

다음 예제에서는 값 배열의 Double 각 요소를 값으로 Single 변환합니다.

double[] values = { Double.MinValue, -1.38e10, -1023.299, -12.98,
                    0, 9.113e-16, 103.919, 17834.191, Double.MaxValue };
float result;

foreach (double value in values)
{
   result = Convert.ToSingle(value);
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                     value.GetType().Name, value,
                     result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the Double value '-1.79769313486232E+308' to the Single value -Infinity.
//    Converted the Double value '-13800000000' to the Single value -1.38E+10.
//    Converted the Double value '-1023.299' to the Single value -1023.299.
//    Converted the Double value '-12.98' to the Single value -12.98.
//    Converted the Double value '0' to the Single value 0.
//   Converted the Double value '9.113E-16' to the Single value 9.113E-16.
//    Converted the Double value '103.919' to the Single value 103.919.
//    Converted the Double value '17834.191' to the Single value 17834.19.
//    Converted the Double value '1.79769313486232E+308' to the Single value Infinity.
let values = 
    [| Double.MinValue; -1.38e10; -1023.299; -12.98; 0; 9.113e-16; 103.919; 17834.191; Double.MaxValue |]

for value in values do
    let result = Convert.ToSingle value
    printfn $"Converted the {value.GetType().Name} value {value} to the {result.GetType().Name} value {result}."
// The example displays the following output:
//    Converted the Double value '-1.79769313486232E+308' to the Single value -Infinity.
//    Converted the Double value '-13800000000' to the Single value -1.38E+10.
//    Converted the Double value '-1023.299' to the Single value -1023.299.
//    Converted the Double value '-12.98' to the Single value -12.98.
//    Converted the Double value '0' to the Single value 0.
//   Converted the Double value '9.113E-16' to the Single value 9.113E-16.
//    Converted the Double value '103.919' to the Single value 103.919.
//    Converted the Double value '17834.191' to the Single value 17834.19.
//    Converted the Double value '1.79769313486232E+308' to the Single value Infinity.
Dim values() As Double = { Double.MinValue, -1.38e10, -1023.299, -12.98, _
                           0, 9.113e-16, 103.919, 17834.191, Double.MaxValue }
Dim result As Single

For Each value As Double In values
   result = Convert.ToSingle(value)
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                     value.GetType().Name, value, _
                     result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the Double value '-1.79769313486232E+308' to the Single value -Infinity.
'    Converted the Double value '-13800000000' to the Single value -1.38E+10.
'    Converted the Double value '-1023.299' to the Single value -1023.299.
'    Converted the Double value '-12.98' to the Single value -12.98.
'    Converted the Double value '0' to the Single value 0.
'    Converted the Double value '9.113E-16' to the Single value 9.113E-16.
'    Converted the Double value '103.919' to the Single value 103.919.
'    Converted the Double value '17834.191' to the Single value 17834.19.
'    Converted the Double value '1.79769313486232E+308' to the Single value Infinity.

추가 정보

적용 대상

ToSingle(Decimal)

지정된 10진수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(System::Decimal value);
public static float ToSingle (decimal value);
static member ToSingle : decimal -> single
Public Shared Function ToSingle (value As Decimal) As Single

매개 변수

value
Decimal

변환할 10진수입니다.

반환

Single

value에 해당하는 단정밀도 부동 소수점 숫자입니다.

value가 가장 가까운 수로 반올림됩니다. 예를 들어, 소수점 두 자리로 반올림하면 2.345는 2.34가 되고 2.355는 2.36이 됩니다.

예제

다음 예제에서는 값 배열의 Decimal 각 요소를 값으로 Single 변환합니다.

decimal[] values = { Decimal.MinValue, -1034.23m, -12m, 0m, 147m,
                            199.55m, 9214.16m, Decimal.MaxValue };
float result;

foreach (var value in values)
{
   result = Convert.ToSingle(value);
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                     value.GetType().Name, value,
                     result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the Decimal value '-79228162514264337593543950335' to the Single value -7.9228163E+28.
//    Converted the Decimal value '-1034.23' to the Single value -1034.23.
//    Converted the Decimal value '-12' to the Single value -12.
//    Converted the Decimal value '0' to the Single value 0.
//    Converted the Decimal value '147' to the Single value 147.
//    Converted the Decimal value '199.55' to the Single value 199.55.
//    Converted the Decimal value '9214.16' to the Single value 9214.16.
//    Converted the Decimal value '79228162514264337593543950335' to the Single value 7.9228163E+28.
let values = 
    [| Decimal.MinValue; -1034.23m; -12m; 0m; 147m; 199.55m; 9214.16m; Decimal.MaxValue |]

for value in values do
    let result = Convert.ToSingle value
    printfn $"Converted the {value.GetType().Name} value {value} to the {result.GetType().Name} value {result}."
// The example displays the following output:
//    Converted the Decimal value '-79228162514264337593543950335' to the Single value -7.9228163E+28.
//    Converted the Decimal value '-1034.23' to the Single value -1034.23.
//    Converted the Decimal value '-12' to the Single value -12.
//    Converted the Decimal value '0' to the Single value 0.
//    Converted the Decimal value '147' to the Single value 147.
//    Converted the Decimal value '199.55' to the Single value 199.55.
//    Converted the Decimal value '9214.16' to the Single value 9214.16.
//    Converted the Decimal value '79228162514264337593543950335' to the Single value 7.9228163E+28.
Dim values() As Decimal = { Decimal.MinValue, -1034.23d, -12d, 0d, 147d, _
                            199.55d, 9214.16d, Decimal.MaxValue }
Dim result As Single

For Each value As Decimal In values
   result = Convert.ToSingle(value)
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                     value.GetType().Name, value, _
                     result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the Decimal value '-79228162514264337593543950335' to the Single value -7.922816E+28.
'    Converted the Decimal value '-1034.23' to the Single value -1034.23.
'    Converted the Decimal value '-12' to the Single value -12.
'    Converted the Decimal value '0' to the Single value 0.
'    Converted the Decimal value '147' to the Single value 147.
'    Converted the Decimal value '199.55' to the Single value 199.55.
'    Converted the Decimal value '9214.16' to the Single value 9214.16.
'    Converted the Decimal value '79228162514264337593543950335' to the Single value 7.922816E+28.

추가 정보

적용 대상

ToSingle(DateTime)

이 메서드를 호출하면 InvalidCastException이 항상 throw됩니다.

public:
 static float ToSingle(DateTime value);
public static float ToSingle (DateTime value);
static member ToSingle : DateTime -> single
Public Shared Function ToSingle (value As DateTime) As Single

매개 변수

value
DateTime

변환할 날짜 및 시간 값입니다.

반환

Single

이 변환은 지원되지 않습니다. 값이 반환되지 않습니다.

예외

이 변환은 지원되지 않습니다.

적용 대상

ToSingle(Char)

이 메서드를 호출하면 InvalidCastException이 항상 throw됩니다.

public:
 static float ToSingle(char value);
public static float ToSingle (char value);
static member ToSingle : char -> single
Public Shared Function ToSingle (value As Char) As Single

매개 변수

value
Char

변환할 유니코드 문자입니다.

반환

Single

이 변환은 지원되지 않습니다. 값이 반환되지 않습니다.

예외

이 변환은 지원되지 않습니다.

추가 정보

적용 대상

ToSingle(Byte)

지정된 8비트 부호 없는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(System::Byte value);
public static float ToSingle (byte value);
static member ToSingle : byte -> single
Public Shared Function ToSingle (value As Byte) As Single

매개 변수

value
Byte

변환할 8비트 부호 없는 정수입니다.

반환

Single

value에 해당하는 단정밀도 부동 소수점 숫자입니다.

예제

다음 예제에서는 바이트 값 배열의 각 요소를 값으로 Single 변환합니다.

byte[] numbers = { Byte.MinValue, 10, 100, Byte.MaxValue };
float result;

foreach (byte number in numbers)
{
   result = Convert.ToSingle(number);
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                     number.GetType().Name, number,
                     result.GetType().Name, result);
}
// The example displays the following output:
//       Converted the Byte value 0 to the Single value 0.
//       Converted the Byte value 10 to the Single value 10.
//       Converted the Byte value 100 to the Single value 100.
//       Converted the Byte value 255 to the Single value 255.
let numbers = [| Byte.MinValue; 10uy; 100uy; Byte.MaxValue |]

for number in numbers do
    let result = Convert.ToSingle number
    printfn $"Converted the {number.GetType().Name} value {number} to the {result.GetType().Name} value {result}."
// The example displays the following output:
//       Converted the Byte value 0 to the Single value 0.
//       Converted the Byte value 10 to the Single value 10.
//       Converted the Byte value 100 to the Single value 100.
//       Converted the Byte value 255 to the Single value 255.
Dim numbers() As Byte = { Byte.MinValue, 10, 100, Byte.MaxValue }
Dim result As Single

For Each number As Byte In numbers
   result = Convert.ToSingle(number)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                     number.GetType().Name, number, _
                     result.GetType().Name, result)
Next
' The example displays the following output:
'       Converted the Byte value 0 to the Single value 0.
'       Converted the Byte value 10 to the Single value 10.
'       Converted the Byte value 100 to the Single value 100.
'       Converted the Byte value 255 to the Single value 255.

적용 대상

ToSingle(Boolean)

지정된 부울 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(bool value);
public static float ToSingle (bool value);
static member ToSingle : bool -> single
Public Shared Function ToSingle (value As Boolean) As Single

매개 변수

value
Boolean

변환할 부울 값입니다.

반환

Single

valuetrue이면 숫자 1을 반환하고, 그렇지 않으면 0을 반환합니다.

예제

다음 예제에서는 부울 값을 true false 값으로 Single 변환합니다.

bool[] flags = { true, false };
float result;

foreach (bool flag in flags)
{
   result = Convert.ToSingle(flag);
   Console.WriteLine("Converted {0} to {1}.", flag, result);
}
// The example displays the following output:
//       Converted True to 1.
//       Converted False to 0.
let flags = [| true; false |]

for flag in flags do
    let result = Convert.ToSingle flag
    printfn $"Converted {flag} to {result}."
// The example displays the following output:
//       Converted True to 1.
//       Converted False to 0.
Dim flags() As Boolean = { True, False }
Dim result As Single

For Each flag As Boolean In flags
   result = Convert.ToSingle(flag)
   Console.WriteLine("Converted {0} to {1}.", flag, result)
Next
' The example displays the following output:
'       Converted True to 1.
'       Converted False to 0.

적용 대상

ToSingle(Int64)

지정된 64비트 부호 있는 정수 값을 해당하는 단정밀도 부동 소수점 숫자로 변환합니다.

public:
 static float ToSingle(long value);
public static float ToSingle (long value);
static member ToSingle : int64 -> single
Public Shared Function ToSingle (value As Long) As Single

매개 변수

value
Int64

변환할 64비트 부호 있는 정수입니다.

반환

Single

value에 해당하는 단정밀도 부동 소수점 숫자입니다.

예제

다음 예제에서는 긴 정수 배열의 각 요소를 값으로 Single 변환합니다.

long[] numbers = { Int64.MinValue, -903, 0, 172, Int64.MaxValue};
float result;

foreach (long number in numbers)
{
   result = Convert.ToSingle(number);
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                     number.GetType().Name, number,
                     result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the Int64 value '-9223372036854775808' to the Single value -9.223372E+18.
//    Converted the Int64 value '-903' to the Single value -903.
//    Converted the Int64 value '0' to the Single value 0.
//    Converted the Int64 value '172' to the Single value 172.
//    Converted the Int64 value '9223372036854775807' to the Single value 9.223372E+18.
let numbers = 
    [| Int64.MinValue; -903; 0; 172; Int64.MaxValue |]

for number in numbers do
    let result = Convert.ToSingle number
    printfn $"Converted the {number.GetType().Name} value {number} to the {result.GetType().Name} value {result}."
// The example displays the following output:
//    Converted the Int64 value '-9223372036854775808' to the Single value -9.223372E+18.
//    Converted the Int64 value '-903' to the Single value -903.
//    Converted the Int64 value '0' to the Single value 0.
//    Converted the Int64 value '172' to the Single value 172.
//    Converted the Int64 value '9223372036854775807' to the Single value 9.223372E+18.
      Dim numbers() As Long = { Int64.MinValue, -903, 0, 172, Int64.MaxValue}
      Dim result As Single

      For Each number As Long In numbers
         result = Convert.ToSingle(number)
         Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                           number.GetType().Name, number, _
                           result.GetType().Name, result)

      Next
      ' The example displays the following output:
Converted the Int64 value '-9223372036854775808' to the Single value -9.223372E+18.
Converted the Int64 value '-903' to the Single value -903.
Converted the Int64 value '0' to the Single value 0.
Converted the Int64 value '172' to the Single value 172.
Converted the Int64 value '9223372036854775807' to the Single value 9.223372E+18.

      '    Converted the Int64 value '-9223372036854775808' to the Single value -9.223372E+18.
      '    Converted the Int64 value '-903' to the Single value -903.
      '    Converted the Int64 value '0' to the Single value 0.
      '    Converted the Int64 value '172' to the Single value 172.
      '    Converted the Int64 value '9223372036854775807' to the Single value 9.223372E+18.

적용 대상