Convert.ToSingle Método
Definición
Importante
Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.
Convierte un valor especificado en un número de punto flotante de precisión sencilla.
Sobrecargas
ToSingle(String, IFormatProvider) |
Convierte la representación de cadena especificada de un número en un número de punto flotante de precisión sencilla equivalente, usando la información de formato específica de la referencia cultural indicada. |
ToSingle(SByte) |
Convierte el valor del entero de 8 bits con signo especificado en un número de punto flotante de precisión sencilla equivalente. |
ToSingle(Object, IFormatProvider) |
Convierte el valor del objeto especificado en un número de punto flotante de precisión sencilla, usando la información de formato específica de la referencia cultural indicada. |
ToSingle(UInt64) |
Convierte el valor del entero de 64 bits sin signo especificado en un número de punto flotante de precisión sencilla equivalente. |
ToSingle(UInt32) |
Convierte el valor del entero de 32 bits sin signo especificado en un número de punto flotante de precisión sencilla equivalente. |
ToSingle(String) |
Convierte la representación de cadena especificada de un número en un número de punto flotante de precisión sencilla equivalente. |
ToSingle(Single) |
Devuelve el número de punto flotante de precisión sencilla especificado; no se efectúa una conversión real. |
ToSingle(Object) |
Convierte el valor del objeto especificado en un número de punto flotante de precisión sencilla. |
ToSingle(UInt16) |
Convierte el valor del entero de 16 bits sin signo especificado en un número de punto flotante de precisión sencilla equivalente. |
ToSingle(Int32) |
Convierte el valor del entero de 32 bits con signo especificado en un número de punto flotante de precisión sencilla equivalente. |
ToSingle(Int16) |
Convierte el valor del entero de 16 bits con signo especificado en un número de punto flotante de precisión sencilla equivalente. |
ToSingle(Double) |
Convierte el valor del número de punto flotante de precisión doble especificado en un número de punto flotante de precisión sencilla equivalente. |
ToSingle(Decimal) |
Convierte el valor del número decimal especificado en un número de punto flotante de precisión sencilla equivalente. |
ToSingle(DateTime) |
Cuando se llama a este método, siempre se produce InvalidCastException. |
ToSingle(Char) |
Cuando se llama a este método, siempre se produce InvalidCastException. |
ToSingle(Byte) |
Convierte el valor del entero de 8 bits sin signo especificado en un número de punto flotante de precisión sencilla equivalente. |
ToSingle(Boolean) |
Convierte el valor booleano especificado en un número de punto flotante de precisión sencilla equivalente. |
ToSingle(Int64) |
Convierte el valor del entero de 64 bits con signo especificado en un número de punto flotante de precisión sencilla equivalente. |
ToSingle(String, IFormatProvider)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Convierte la representación de cadena especificada de un número en un número de punto flotante de precisión sencilla equivalente, usando la información de formato específica de la referencia cultural indicada.
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
Parámetros
- value
- String
Cadena que contiene el número que se va a convertir.
- provider
- IFormatProvider
Objeto que proporciona información de formato específica de la referencia cultural.
Devoluciones
Un número de punto flotante de precisión sencilla equivalente al número de value
, o 0 (cero) si value
es null
.
Excepciones
value
no es un número con un formato válido.
value
representa un número menor que Single.MinValue o mayor que Single.MaxValue.
Ejemplos
En el ejemplo siguiente se usan IFormatProvider objetos que representan las referencias culturales en-US y fr-FR cuando convierte los elementos de una matriz de cadenas numéricas en Single valores.
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
Comentarios
El valor devuelto es el resultado de invocar el Single.Parse método en value
.
provider
es una IFormatProvider instancia de que obtiene un NumberFormatInfo objeto . El NumberFormatInfo objeto proporciona información específica de la referencia cultural sobre el formato de value
. Si provider
es null
, se usa para NumberFormatInfo la referencia cultural actual.
Si prefiere no controlar una excepción si se produce un error en la conversión, puede llamar al Single.TryParse método en su lugar. Devuelve un Boolean valor que indica si la conversión se realizó correctamente o no.
Se aplica a
ToSingle(SByte)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del entero de 8 bits con signo especificado en un número de punto flotante de precisión sencilla equivalente.
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
Parámetros
- value
- SByte
Entero de 8 bits con signo que se va a convertir.
Devoluciones
Un entero de 8 bits con signo equivalente a value
.
- Atributos
Ejemplos
En el ejemplo siguiente se convierte cada elemento de una matriz de bytes con signo en un Single valor .
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.
Se aplica a
ToSingle(Object, IFormatProvider)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Convierte el valor del objeto especificado en un número de punto flotante de precisión sencilla, usando la información de formato específica de la referencia cultural indicada.
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
Parámetros
- value
- Object
Objeto que implementa la interfaz IConvertible.
- provider
- IFormatProvider
Objeto que proporciona información de formato específica de la referencia cultural.
Devoluciones
Un número de punto flotante de precisión sencilla equivalente a value
, o cero si value
es null
.
Excepciones
value
no tiene un formato adecuado.
value
no implementa IConvertible.
value
representa un número menor que Single.MinValue o mayor que Single.MaxValue.
Ejemplos
En el ejemplo siguiente se define una clase Temperature
que implementa la interfaz IConvertible . Su implementación del IConvertible.ToSingle método devuelve el valor interno de una variable privada Single que representa la temperatura.
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
En el ejemplo siguiente se muestra cómo una llamada al Convert.ToSingle(Object, IFormatProvider) método, a su vez, llama a la IConvertible.ToSingle implementación de la Temperature
clase .
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
Comentarios
El valor devuelto es el resultado de invocar el IConvertible.ToSingle método del tipo subyacente de value
.
provider
permite al usuario especificar información de conversión específica de la referencia cultural sobre el contenido de value
. Por ejemplo, si value
es un String objeto que representa un número, provider
podría proporcionar información específica de la referencia cultural sobre la notación utilizada para representar ese número.
Los tipos base omiten provider
; sin embargo, el parámetro se puede usar si value
es un tipo definido por el usuario que implementa la IConvertible interfaz.
Se aplica a
ToSingle(UInt64)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del entero de 64 bits sin signo especificado en un número de punto flotante de precisión sencilla equivalente.
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
Parámetros
- value
- UInt64
Entero de 64 bits sin signo que se va a convertir.
Devoluciones
Un número de punto flotante de precisión sencilla equivalente a value
.
- Atributos
Ejemplos
En el ejemplo siguiente se convierte cada elemento de una matriz de enteros largos sin signo en un Single valor .
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.
Se aplica a
ToSingle(UInt32)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del entero de 32 bits sin signo especificado en un número de punto flotante de precisión sencilla equivalente.
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
Parámetros
- value
- UInt32
Entero de 32 bits sin signo que se va a convertir.
Devoluciones
Un número de punto flotante de precisión sencilla equivalente a value
.
- Atributos
Ejemplos
En el ejemplo siguiente se convierte cada elemento de una matriz de enteros sin signo en un Single valor .
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.
Se aplica a
ToSingle(String)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Convierte la representación de cadena especificada de un número en un número de punto flotante de precisión sencilla equivalente.
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
Parámetros
- value
- String
Cadena que contiene el número que se va a convertir.
Devoluciones
Un número de punto flotante de precisión sencilla equivalente al número de value
, o 0 (cero) si value
es null
.
Excepciones
value
no es un número con un formato válido.
value
representa un número menor que Single.MinValue o mayor que Single.MaxValue.
Ejemplos
En el ejemplo siguiente se intenta convertir cada elemento de una matriz de cadenas numéricas en un Single valor .
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.
Comentarios
El uso del ToSingle(String) método equivale a pasar value
al Single.Parse(String) método .
value
se interpreta mediante las convenciones de formato de la referencia cultural actual.
Si prefiere no controlar una excepción si se produce un error en la conversión, puede llamar al Single.TryParse método en su lugar. Devuelve un Boolean valor que indica si la conversión se realizó correctamente o no.
Se aplica a
ToSingle(Single)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Devuelve el número de punto flotante de precisión sencilla especificado; no se efectúa una conversión real.
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
Parámetros
- value
- Single
Número de punto flotante de precisión sencilla que se va a devolver.
Devoluciones
value
se devuelve sin cambios.
Consulte también
Se aplica a
ToSingle(Object)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Convierte el valor del objeto especificado en un número de punto flotante de precisión sencilla.
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
Parámetros
- value
- Object
Objeto que implementa la interfaz IConvertible o null
.
Devoluciones
Un número de punto flotante de precisión sencilla equivalente a value
, o cero si value
es null
.
Excepciones
value
no tiene un formato adecuado.
value
representa un número menor que Single.MinValue o mayor que Single.MaxValue.
Ejemplos
En el ejemplo siguiente se intenta convertir cada elemento de una matriz de objetos en un Single valor .
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.
Comentarios
El valor devuelto es el resultado de invocar el IConvertible.ToSingle método del tipo subyacente de value
.
Se aplica a
ToSingle(UInt16)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del entero de 16 bits sin signo especificado en un número de punto flotante de precisión sencilla equivalente.
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
Parámetros
- value
- UInt16
Entero de 16 bits sin signo que se va a convertir.
Devoluciones
Un número de punto flotante de precisión sencilla equivalente a value
.
- Atributos
Ejemplos
En el ejemplo siguiente se convierte cada elemento de una matriz de enteros de 16 bits sin signo en un Single valor .
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.
Se aplica a
ToSingle(Int32)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Convierte el valor del entero de 32 bits con signo especificado en un número de punto flotante de precisión sencilla equivalente.
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
Parámetros
- value
- Int32
Entero de 32 bits con signo que se va a convertir.
Devoluciones
Un número de punto flotante de precisión sencilla equivalente a value
.
Ejemplos
En el ejemplo siguiente se convierte cada elemento de una matriz de enteros en un Single valor .
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.
Se aplica a
ToSingle(Int16)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Convierte el valor del entero de 16 bits con signo especificado en un número de punto flotante de precisión sencilla equivalente.
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
Parámetros
- value
- Int16
Entero de 16 bits con signo que se va a convertir.
Devoluciones
Un número de punto flotante de precisión sencilla equivalente a value
.
Ejemplos
En el ejemplo siguiente se convierte cada elemento de una matriz de enteros de 16 bits en un Single valor .
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.
Se aplica a
ToSingle(Double)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Convierte el valor del número de punto flotante de precisión doble especificado en un número de punto flotante de precisión sencilla equivalente.
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
Parámetros
- value
- Double
Número de punto flotante de precisión doble que se va a convertir.
Devoluciones
Un número de punto flotante de precisión sencilla equivalente a value
.
value
se redondea usando el sistema de redondeo al valor más próximo. Por ejemplo, cuando se redondea a dos decimales, el valor 2,345 se convierte en 2,34 y el valor 2,355 pasa a ser 2,36.
Ejemplos
En el ejemplo siguiente se convierte cada elemento de una matriz de Double valores en un Single valor .
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.
Consulte también
Se aplica a
ToSingle(Decimal)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Convierte el valor del número decimal especificado en un número de punto flotante de precisión sencilla equivalente.
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
Parámetros
- value
- Decimal
Número decimal que se va a convertir.
Devoluciones
Un número de punto flotante de precisión sencilla equivalente a value
.
value
se redondea usando el sistema de redondeo al valor más próximo. Por ejemplo, cuando se redondea a dos decimales, el valor 2,345 se convierte en 2,34 y el valor 2,355 pasa a ser 2,36.
Ejemplos
En el ejemplo siguiente se convierte cada elemento de una matriz de Decimal valores en un Single valor .
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.
Consulte también
Se aplica a
ToSingle(DateTime)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Cuando se llama a este método, siempre se produce InvalidCastException.
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
Parámetros
- value
- DateTime
Valor de fecha y hora que se va a convertir.
Devoluciones
No se admite esta conversión. No se devuelve ningún valor.
Excepciones
No se admite esta conversión.
Se aplica a
ToSingle(Char)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Cuando se llama a este método, siempre se produce InvalidCastException.
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
Parámetros
- value
- Char
Carácter Unicode que se va a convertir.
Devoluciones
No se admite esta conversión. No se devuelve ningún valor.
Excepciones
No se admite esta conversión.
Consulte también
Se aplica a
ToSingle(Byte)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Convierte el valor del entero de 8 bits sin signo especificado en un número de punto flotante de precisión sencilla equivalente.
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
Parámetros
- value
- Byte
Entero de 8 bits sin signo que se va a convertir.
Devoluciones
Un número de punto flotante de precisión sencilla equivalente a value
.
Ejemplos
En el ejemplo siguiente se convierte cada elemento de una matriz de valores de bytes en un Single valor .
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.
Se aplica a
ToSingle(Boolean)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Convierte el valor booleano especificado en un número de punto flotante de precisión sencilla equivalente.
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
Parámetros
- value
- Boolean
Valor booleano que se va a convertir.
Devoluciones
Número 1 si value
es true
; en caso contrario, 0.
Ejemplos
En el ejemplo siguiente se convierten los valores true
booleanos y false
en Single los valores .
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.
Se aplica a
ToSingle(Int64)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Convierte el valor del entero de 64 bits con signo especificado en un número de punto flotante de precisión sencilla equivalente.
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
Parámetros
- value
- Int64
Entero de 64 bits con signo que se va a convertir.
Devoluciones
Un número de punto flotante de precisión sencilla equivalente a value
.
Ejemplos
En el ejemplo siguiente se convierte cada elemento de una matriz de enteros largos en un Single valor .
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.