Convert.ToChar Method

Definition

Converts a specified value to a Unicode character.

Overloads

ToChar(String, IFormatProvider)

Converts the first character of a specified string to a Unicode character, using specified culture-specific formatting information.

ToChar(Object)

Converts the value of the specified object to a Unicode character.

ToChar(Object, IFormatProvider)

Converts the value of the specified object to its equivalent Unicode character, using the specified culture-specific formatting information.

ToChar(UInt64)

Converts the value of the specified 64-bit unsigned integer to its equivalent Unicode character.

ToChar(UInt32)

Converts the value of the specified 32-bit unsigned integer to its equivalent Unicode character.

ToChar(UInt16)

Converts the value of the specified 16-bit unsigned integer to its equivalent Unicode character.

ToChar(String)

Converts the first character of a specified string to a Unicode character.

ToChar(Single)

Calling this method always throws InvalidCastException.

ToChar(SByte)

Converts the value of the specified 8-bit signed integer to its equivalent Unicode character.

ToChar(Int64)

Converts the value of the specified 64-bit signed integer to its equivalent Unicode character.

ToChar(Int16)

Converts the value of the specified 16-bit signed integer to its equivalent Unicode character.

ToChar(Double)

Calling this method always throws InvalidCastException.

ToChar(Decimal)

Calling this method always throws InvalidCastException.

ToChar(DateTime)

Calling this method always throws InvalidCastException.

ToChar(Char)

Returns the specified Unicode character value; no actual conversion is performed.

ToChar(Byte)

Converts the value of the specified 8-bit unsigned integer to its equivalent Unicode character.

ToChar(Boolean)

Calling this method always throws InvalidCastException.

ToChar(Int32)

Converts the value of the specified 32-bit signed integer to its equivalent Unicode character.

ToChar(String, IFormatProvider)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Converts the first character of a specified string to a Unicode character, using specified culture-specific formatting information.

C#
public static char ToChar(string value, IFormatProvider provider);
C#
public static char ToChar(string value, IFormatProvider? provider);

Parameters

value
String

A string of length 1 or null.

provider
IFormatProvider

An object that supplies culture-specific formatting information. This parameter is ignored.

Returns

A Unicode character that is equivalent to the first and only character in value.

Exceptions

value is null.

The length of value is not 1.

Examples

The following example converts a string representation of a Char value with the ToChar method, using an IFormatProvider object that displays the type of the format provider for which it is called. The example shows that the format provider is not referenced.

C#
using System;
using System.Globalization;

public class DummyProvider : IFormatProvider
{
    // Normally, GetFormat returns an object of the requested type
    // (usually itself) if it is able; otherwise, it returns Nothing.
    public object GetFormat(Type argType)
    {
        // Here, GetFormat displays the name of argType, after removing
        // the namespace information. GetFormat always returns null.
        string argStr = argType.ToString( );
        if( argStr == "" )
            argStr = "Empty";
        argStr = argStr.Substring( argStr.LastIndexOf( '.' ) + 1 );

        Console.Write( "{0,-20}", argStr );
        return null;
    }
}

class ConvertNonNumericProviderDemo
{
    public static void Main( )
    {
        // Create an instance of IFormatProvider.
        DummyProvider provider = new DummyProvider( );
        string format   = "{0,-17}{1,-17}{2}";

        // Convert these values using DummyProvider.
        string Int32A   = "-252645135";
        string DoubleA  = "61680.3855";
        string DayTimeA = "2001/9/11 13:45";

        string BoolA    = "True";
        string StringA  = "Qwerty";
        string CharA    = "$";

        Console.WriteLine( "This example of selected " +
            "Convert.To<Type>( String, IFormatProvider ) \nmethods " +
            "generates the following output. The example displays " +
            "the \nprovider type if the IFormatProvider is called." );
        Console.WriteLine( "\nNote: For the " +
            "ToBoolean, ToString, and ToChar methods, the \n" +
            "IFormatProvider object is not referenced." );

        // The format provider is called for the following conversions.
        Console.WriteLine( );
        Console.WriteLine( format, "ToInt32", Int32A,
            Convert.ToInt32( Int32A, provider ) );
        Console.WriteLine( format, "ToDouble", DoubleA,
            Convert.ToDouble( DoubleA, provider ) );
        Console.WriteLine( format, "ToDateTime", DayTimeA,
            Convert.ToDateTime( DayTimeA, provider ) );

        // The format provider is not called for these conversions.
        Console.WriteLine( );
        Console.WriteLine( format, "ToBoolean", BoolA,
            Convert.ToBoolean( BoolA, provider ) );
        Console.WriteLine( format, "ToString", StringA,
            Convert.ToString( StringA, provider ) );
        Console.WriteLine( format, "ToChar", CharA,
            Convert.ToChar( CharA, provider ) );
    }
}

/*
This example of selected Convert.To<Type>( String, IFormatProvider )
methods generates the following output. The example displays the
provider type if the IFormatProvider is called.

Note: For the ToBoolean, ToString, and ToChar methods, the
IFormatProvider object is not referenced.

NumberFormatInfo    ToInt32          -252645135       -252645135
NumberFormatInfo    ToDouble         61680.3855       61680.3855
DateTimeFormatInfo  ToDateTime       2001/9/11 13:45  9/11/2001 1:45:00 PM

ToBoolean        True             True
ToString         Qwerty           Qwerty
ToChar           $                $
*/

Remarks

value must be a string that contains a single character.

If you prefer not to handle an exception if the conversion fails, you can call the Char.TryParse method instead. It returns a Boolean value that indicates whether the conversion succeeded or failed.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

ToChar(Object)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Converts the value of the specified object to a Unicode character.

C#
public static char ToChar(object value);
C#
public static char ToChar(object? value);

Parameters

value
Object

An object that implements the IConvertible interface.

Returns

A Unicode character that is equivalent to value, or Char.MinValue if value is null.

Exceptions

value is a null string.

value does not implement the IConvertible interface.

-or-

The conversion of value to a Char is not supported.

value is less than Char.MinValue or greater than Char.MaxValue.

Examples

The following example attempts to convert each element in an object array to a Char value.

C#
object[] values = { 'r', "s", "word", (byte) 83, 77, 109324, 335812911,
                    new DateTime(2009, 3, 10), (uint) 1934,
                    (sbyte) -17, 169.34, 175.6m, null };
char result;

foreach (object value in values)
{
   try {
      result = Convert.ToChar(value);
      Console.WriteLine("The {0} value {1} converts to {2}.",
                        value.GetType().Name, value, result);
   }
   catch (FormatException e) {
      Console.WriteLine(e.Message);
   }
   catch (InvalidCastException) {
      Console.WriteLine("Conversion of the {0} value {1} to a Char is not supported.",
                        value.GetType().Name, value);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the Char data type.",
                        value.GetType().Name, value);
   }
   catch (NullReferenceException) {
      Console.WriteLine("Cannot convert a null reference to a Char.");
   }
}
// The example displays the following output:
//       The Char value r converts to r.
//       The String value s converts to s.
//       String must be exactly one character long.
//       The Byte value 83 converts to S.
//       The Int32 value 77 converts to M.
//       The Int32 value 109324 is outside the range of the Char data type.
//       The Int32 value 335812911 is outside the range of the Char data type.
//       Conversion of the DateTime value 3/10/2009 12:00:00 AM to a Char is not supported.
//       The UInt32 value 1934 converts to ?.
//       The SByte value -17 is outside the range of the Char data type.
//       Conversion of the Double value 169.34 to a Char is not supported.
//       Conversion of the Decimal value 175.6 to a Char is not supported.
//       Cannot convert a null reference to a Char.

Remarks

If value is not null, this method wraps a call to the IConvertible.ToChar implementation of the underlying type of value.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

ToChar(Object, IFormatProvider)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Converts the value of the specified object to its equivalent Unicode character, using the specified culture-specific formatting information.

C#
public static char ToChar(object value, IFormatProvider provider);
C#
public static char ToChar(object? value, IFormatProvider? provider);

Parameters

value
Object

An object that implements the IConvertible interface.

provider
IFormatProvider

An object that supplies culture-specific formatting information.

Returns

A Unicode character that is equivalent to value, or Char.MinValue if value is null.

Exceptions

value is a null string.

value does not implement the IConvertible interface.

-or-

The conversion of value to a Char is not supported.

value is less than Char.MinValue or greater than Char.MaxValue.

Examples

The following example defines a class that implements IConvertible and a class that implements IFormatProvider. Objects of the class that implements IConvertible hold an array of Double values. An object of each class is passed to the ToChar method. This method returns a character whose Unicode value is the average of the array of Double values, using the object that implements IFormatProvider to determine how to calculate the average.

C#
using System;
using System.Collections;

// Define the types of averaging available in the class
// implementing IConvertible.
public enum AverageType : short
{
    None = 0,
    GeometricMean = 1,
    ArithmeticMean = 2,
    Median = 3
};

// Pass an instance of this class to methods that require an
// IFormatProvider. The class instance determines the type of
// average to calculate.
public class AverageInfo : IFormatProvider
{
    protected AverageType AvgType;

    // Specify the type of averaging in the constructor.
    public AverageInfo( AverageType avgType )
    {
        this.AvgType = avgType;
    }

    // This method returns a reference to the containing object
    // if an object of AverageInfo type is requested.
    public object GetFormat( Type argType )
    {
        if ( argType == typeof( AverageInfo ) )
            return this;
        else
            return null;
    }

    // Use this property to set or get the type of averaging.
    public AverageType TypeOfAverage
    {
        get { return this.AvgType; }
        set { this.AvgType = value; }
    }
}

// This class encapsulates an array of double values and implements
// the IConvertible interface. Most of the IConvertible methods
// return an average of the array elements in one of three types:
// arithmetic mean, geometric mean, or median.
public class DataSet : IConvertible
{
    protected ArrayList     data;
    protected AverageInfo   defaultProvider;

    // Construct the object and add an initial list of values.
    // Create a default format provider.
    public DataSet( params double[ ] values )
    {
        data = new ArrayList( values );
        defaultProvider =
            new AverageInfo( AverageType.ArithmeticMean );
    }

    // Add additional values with this method.
    public int Add( double value )
    {
        data.Add( value );
        return data.Count;
    }

    // Get, set, and add values with this indexer property.
    public double this[ int index ]
    {
        get
        {
            if( index >= 0 && index < data.Count )
                return (double)data[ index ];
            else
                throw new InvalidOperationException(
                    "[DataSet.get] Index out of range." );
        }
        set
        {
            if( index >= 0 && index < data.Count )
                data[ index ] = value;

            else if( index == data.Count )
                data.Add( value );
            else
                throw new InvalidOperationException(
                    "[DataSet.set] Index out of range." );
        }
    }

    // This property returns the number of elements in the object.
    public int Count
    {
        get { return data.Count; }
    }

    // This method calculates the average of the object's elements.
    protected double Average( AverageType avgType )
    {
        double  SumProd;

        if( data.Count == 0 )
            return 0.0;

        switch( avgType )
        {
            case AverageType.GeometricMean:

                SumProd = 1.0;
                for( int Index = 0; Index < data.Count; Index++ )
                    SumProd *= (double)data[ Index ];

                // This calculation will not fail with negative
                // elements.
                return Math.Sign( SumProd ) * Math.Pow(
                    Math.Abs( SumProd ), 1.0 / data.Count );

            case AverageType.ArithmeticMean:

                SumProd = 0.0;
                for( int Index = 0; Index < data.Count; Index++ )
                    SumProd += (double)data[ Index ];

                return SumProd / data.Count;

            case AverageType.Median:

                if( data.Count % 2 == 0 )
                    return ( (double)data[ data.Count / 2 ] +
                        (double)data[ data.Count / 2 - 1 ] ) / 2.0;
                else
                    return (double)data[ data.Count / 2 ];

            default:
                return 0.0;
        }
    }

    // Get the AverageInfo object from the caller's format provider,
    // or use the local default.
    protected AverageInfo GetAverageInfo( IFormatProvider provider )
    {
        AverageInfo avgInfo = null;

        if( provider != null )
            avgInfo = (AverageInfo)provider.GetFormat(
                typeof( AverageInfo ) );

        if ( avgInfo == null )
            return defaultProvider;
        else
            return avgInfo;
    }

    // Calculate the average and limit the range.
    protected double CalcNLimitAverage( double min, double max,
        IFormatProvider provider )
    {
        // Get the format provider and calculate the average.
        AverageInfo avgInfo = GetAverageInfo( provider );
        double avg = Average( avgInfo.TypeOfAverage );

        // Limit the range, based on the minimum and maximum values
        // for the type.
        return avg > max ? max : avg < min ? min : avg;
    }

    // The following elements are required by IConvertible.

    // None of these conversion functions throw exceptions. When
    // the data is out of range for the type, the appropriate
    // MinValue or MaxValue is used.
    public TypeCode GetTypeCode( )
    {
        return TypeCode.Object;
    }

    public bool ToBoolean( IFormatProvider provider )
    {
        // ToBoolean is false if the dataset is empty.
        if( data.Count <= 0 )
        {
            return false;
        }

        // For median averaging, ToBoolean is true if any
        // non-discarded elements are nonzero.
        else if( AverageType.Median ==
            GetAverageInfo( provider ).TypeOfAverage )
        {
            if (data.Count % 2 == 0 )
                return ( (double)data[ data.Count / 2 ] != 0.0 ||
                    (double)data[ data.Count / 2 - 1 ] != 0.0 );
            else
                return (double)data[ data.Count / 2 ] != 0.0;
        }

        // For arithmetic or geometric mean averaging, ToBoolean is
        // true if any element of the dataset is nonzero.
        else
        {
            for( int Index = 0; Index < data.Count; Index++ )
                if( (double)data[ Index ] != 0.0 )
                    return true;
            return false;
        }
    }

    public byte ToByte( IFormatProvider provider )
    {
        return Convert.ToByte( CalcNLimitAverage(
            Byte.MinValue, Byte.MaxValue, provider ) );
    }

    public char ToChar( IFormatProvider provider )
    {
        return Convert.ToChar( Convert.ToUInt16( CalcNLimitAverage(
            Char.MinValue, Char.MaxValue, provider ) ) );
    }

    // Convert to DateTime by adding the calculated average as
    // seconds to the current date and time. A valid DateTime is
    // always returned.
    public DateTime ToDateTime( IFormatProvider provider )
    {
        double seconds =
            Average( GetAverageInfo( provider ).TypeOfAverage );
        try
        {
            return DateTime.Now.AddSeconds( seconds );
        }
        catch( ArgumentOutOfRangeException )
        {
            return seconds < 0.0 ? DateTime.MinValue : DateTime.MaxValue;
        }
    }

    public decimal ToDecimal( IFormatProvider provider )
    {
        // The Double conversion rounds Decimal.MinValue and
        // Decimal.MaxValue to invalid Decimal values, so the
        // following limits must be used.
        return Convert.ToDecimal( CalcNLimitAverage(
            -79228162514264330000000000000.0,
            79228162514264330000000000000.0, provider ) );
    }

    public double ToDouble( IFormatProvider provider )
    {
        return Average( GetAverageInfo(provider).TypeOfAverage );
    }

    public short ToInt16( IFormatProvider provider )
    {
        return Convert.ToInt16( CalcNLimitAverage(
            Int16.MinValue, Int16.MaxValue, provider ) );
    }

    public int ToInt32( IFormatProvider provider )
    {
        return Convert.ToInt32( CalcNLimitAverage(
            Int32.MinValue, Int32.MaxValue, provider ) );
    }

    public long ToInt64( IFormatProvider provider )
    {
        // The Double conversion rounds Int64.MinValue and
        // Int64.MaxValue to invalid Int64 values, so the following
        // limits must be used.
        return Convert.ToInt64( CalcNLimitAverage(
            -9223372036854775000, 9223372036854775000, provider ) );
    }

    public SByte ToSByte( IFormatProvider provider )
    {
        return Convert.ToSByte( CalcNLimitAverage(
            SByte.MinValue, SByte.MaxValue, provider ) );
    }

    public float ToSingle( IFormatProvider provider )
    {
        return Convert.ToSingle( CalcNLimitAverage(
            Single.MinValue, Single.MaxValue, provider ) );
    }

    public UInt16 ToUInt16( IFormatProvider provider )
    {
        return Convert.ToUInt16( CalcNLimitAverage(
            UInt16.MinValue, UInt16.MaxValue, provider ) );
    }

    public UInt32 ToUInt32( IFormatProvider provider )
    {
        return Convert.ToUInt32( CalcNLimitAverage(
            UInt32.MinValue, UInt32.MaxValue, provider ) );
    }

    public UInt64 ToUInt64( IFormatProvider provider )
    {
        // The Double conversion rounds UInt64.MaxValue to an invalid
        // UInt64 value, so the following limit must be used.
        return Convert.ToUInt64( CalcNLimitAverage(
            0, 18446744073709550000.0, provider ) );
    }

    public object ToType( Type conversionType,
        IFormatProvider provider )
    {
        return Convert.ChangeType( Average(
            GetAverageInfo( provider ).TypeOfAverage ),
            conversionType );
    }

    public string ToString( IFormatProvider provider )
    {
        AverageType avgType = GetAverageInfo( provider ).TypeOfAverage;
        return String.Format( "( {0}: {1:G10} )", avgType,
            Average( avgType ) );
    }
}

class IConvertibleProviderDemo
{
    // Display a DataSet with three different format providers.
    public static void DisplayDataSet( DataSet ds )
    {
        string      fmt    = "{0,-12}{1,20}{2,20}{3,20}";
        AverageInfo median = new AverageInfo( AverageType.Median );
        AverageInfo geMean =
            new AverageInfo( AverageType.GeometricMean );

         // Display the dataset elements.
        if( ds.Count > 0 )
        {
            Console.Write( "\nDataSet: [{0}", ds[ 0 ] );
            for( int iX = 1; iX < ds.Count; iX++ )
                Console.Write( ", {0}", ds[ iX ] );
            Console.WriteLine( "]\n" );
        }

        Console.WriteLine( fmt, "Convert.", "Default",
            "Geometric Mean", "Median");
        Console.WriteLine( fmt, "--------", "-------",
            "--------------", "------");
        Console.WriteLine( fmt, "ToBoolean",
            Convert.ToBoolean( ds, null ),
            Convert.ToBoolean( ds, geMean ),
            Convert.ToBoolean( ds, median ) );
        Console.WriteLine( fmt, "ToByte",
            Convert.ToByte( ds, null ),
            Convert.ToByte( ds, geMean ),
            Convert.ToByte( ds, median ) );
        Console.WriteLine( fmt, "ToChar",
            Convert.ToChar( ds, null ),
            Convert.ToChar( ds, geMean ),
            Convert.ToChar( ds, median ) );
        Console.WriteLine( "{0,-12}{1,20:yyyy-MM-dd HH:mm:ss}" +
            "{2,20:yyyy-MM-dd HH:mm:ss}{3,20:yyyy-MM-dd HH:mm:ss}",
            "ToDateTime", Convert.ToDateTime( ds, null ),
            Convert.ToDateTime( ds, geMean ),
            Convert.ToDateTime( ds, median ) );
        Console.WriteLine( fmt, "ToDecimal",
            Convert.ToDecimal( ds, null ),
            Convert.ToDecimal( ds, geMean ),
            Convert.ToDecimal( ds, median ) );
        Console.WriteLine( fmt, "ToDouble",
            Convert.ToDouble( ds, null ),
            Convert.ToDouble( ds, geMean ),
            Convert.ToDouble( ds, median ) );
        Console.WriteLine( fmt, "ToInt16",
            Convert.ToInt16( ds, null ),
            Convert.ToInt16( ds, geMean ),
            Convert.ToInt16( ds, median ) );
        Console.WriteLine( fmt, "ToInt32",
            Convert.ToInt32( ds, null ),
            Convert.ToInt32( ds, geMean ),
            Convert.ToInt32( ds, median ) );
        Console.WriteLine( fmt, "ToInt64",
            Convert.ToInt64( ds, null ),
            Convert.ToInt64( ds, geMean ),
            Convert.ToInt64( ds, median ) );
        Console.WriteLine( fmt, "ToSByte",
            Convert.ToSByte( ds, null ),
            Convert.ToSByte( ds, geMean ),
            Convert.ToSByte( ds, median ) );
        Console.WriteLine( fmt, "ToSingle",
            Convert.ToSingle( ds, null ),
            Convert.ToSingle( ds, geMean ),
            Convert.ToSingle( ds, median ) );
        Console.WriteLine( fmt, "ToUInt16",
            Convert.ToUInt16( ds, null ),
            Convert.ToUInt16( ds, geMean ),
            Convert.ToUInt16( ds, median ) );
        Console.WriteLine( fmt, "ToUInt32",
            Convert.ToUInt32( ds, null ),
            Convert.ToUInt32( ds, geMean ),
            Convert.ToUInt32( ds, median ) );
        Console.WriteLine( fmt, "ToUInt64",
            Convert.ToUInt64( ds, null ),
            Convert.ToUInt64( ds, geMean ),
            Convert.ToUInt64( ds, median ) );
    }

    public static void Main( )
    {
        Console.WriteLine( "This example of " +
            "the Convert.To<Type>( object, IFormatProvider ) methods " +
            "\ngenerates the following output. The example " +
            "displays the values \nreturned by the methods, " +
            "using several IFormatProvider objects.\n" );

        DataSet ds1 = new DataSet(
            10.5, 22.2, 45.9, 88.7, 156.05, 297.6 );
        DisplayDataSet( ds1 );

        DataSet ds2 = new DataSet(
            359999.95, 425000, 499999.5, 775000, 1695000 );
        DisplayDataSet( ds2 );
    }
}

/*
This example of the Convert.To<Type>( object, IFormatProvider ) methods
generates the following output. The example displays the values
returned by the methods, using several IFormatProvider objects.

DataSet: [10.5, 22.2, 45.9, 88.7, 156.05, 297.6]

Convert.                 Default      Geometric Mean              Median
--------                 -------      --------------              ------
ToBoolean                   True                True                True
ToByte                       103                  59                  67
ToChar                         g                   ;                   C
ToDateTime   2003-05-13 15:04:12 2003-05-13 15:03:28 2003-05-13 15:03:35
ToDecimal       103.491666666667    59.4332135445164                67.3
ToDouble        103.491666666667    59.4332135445164                67.3
ToInt16                      103                  59                  67
ToInt32                      103                  59                  67
ToInt64                      103                  59                  67
ToSByte                      103                  59                  67
ToSingle                103.4917            59.43321                67.3
ToUInt16                     103                  59                  67
ToUInt32                     103                  59                  67
ToUInt64                     103                  59                  67

DataSet: [359999.95, 425000, 499999.5, 775000, 1695000]

Convert.                 Default      Geometric Mean              Median
--------                 -------      --------------              ------
ToBoolean                   True                True                True
ToByte                       255                 255                 255
ToChar                         ?                   ?                   ?
ToDateTime   2003-05-22 07:39:08 2003-05-20 22:28:45 2003-05-19 09:55:48
ToDecimal              750999.89    631577.237188435            499999.5
ToDouble               750999.89    631577.237188435            499999.5
ToInt16                    32767               32767               32767
ToInt32                   751000              631577              500000
ToInt64                   751000              631577              500000
ToSByte                      127                 127                 127
ToSingle                750999.9            631577.3            499999.5
ToUInt16                   65535               65535               65535
ToUInt32                  751000              631577              500000
ToUInt64                  751000              631577              500000
*/

Remarks

The return value is the result of invoking the IConvertible.ToChar method of the underlying type of value.

provider enables the user to specify culture-specific conversion information about the contents of value. The base types ignore provider; however, the parameter may be used if value is a user-defined type that implements the IConvertible interface.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

ToChar(UInt64)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Important

This API is not CLS-compliant.

Converts the value of the specified 64-bit unsigned integer to its equivalent Unicode character.

C#
[System.CLSCompliant(false)]
public static char ToChar(ulong value);

Parameters

value
UInt64

The 64-bit unsigned integer to convert.

Returns

A Unicode character that is equivalent to value.

Attributes

Exceptions

value is greater than Char.MaxValue.

Examples

The following example converts each element in an array of unsigned long integers to a Char value.

C#
ulong[] numbers = { UInt64.MinValue, 40, 160, 255, 1028,
                    2011, 30001, 207154, Int64.MaxValue };
char result;
foreach (ulong number in numbers)
{
   try {
      result = Convert.ToChar(number);
      Console.WriteLine("{0} converts to '{1}'.", number, result);
   }
   catch (OverflowException) {
      Console.WriteLine("{0} is outside the range of the Char data type.",
                        number);
   }
}
// The example displays the following output:
//       0 converts to ' '.
//       40 converts to '('.
//       160 converts to ' '.
//       255 converts to 'ÿ'.
//       1028 converts to 'Є'.
//       2011 converts to 'ߛ'.
//       30001 converts to '由'.
//       207154 is outside the range of the Char data type.
//       9223372036854775807 is outside the range of the Char data type.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

ToChar(UInt32)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Important

This API is not CLS-compliant.

Converts the value of the specified 32-bit unsigned integer to its equivalent Unicode character.

C#
[System.CLSCompliant(false)]
public static char ToChar(uint value);

Parameters

value
UInt32

The 32-bit unsigned integer to convert.

Returns

A Unicode character that is equivalent to value.

Attributes

Exceptions

value is greater than Char.MaxValue.

Examples

The following example converts each element in an array of unsigned integers to a Char value.

C#
uint[] numbers = { UInt32.MinValue, 40, 160, 255, 1028,
                   2011, 30001, 207154, Int32.MaxValue };
char result;
foreach (uint number in numbers)
{
   try {
      result = Convert.ToChar(number);
      Console.WriteLine("{0} converts to '{1}'.", number, result);
   }
   catch (OverflowException) {
      Console.WriteLine("{0} is outside the range of the Char data type.",
                        number);
   }
}
// The example displays the following output:
//       0 converts to ' '.
//       40 converts to '('.
//       160 converts to ' '.
//       255 converts to 'ÿ'.
//       1028 converts to 'Є'.
//       2011 converts to 'ߛ'.
//       30001 converts to '由'.
//       207154 is outside the range of the Char data type.
//       2147483647 is outside the range of the Char data type.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

ToChar(UInt16)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Important

This API is not CLS-compliant.

Converts the value of the specified 16-bit unsigned integer to its equivalent Unicode character.

C#
[System.CLSCompliant(false)]
public static char ToChar(ushort value);

Parameters

value
UInt16

The 16-bit unsigned integer to convert.

Returns

A Unicode character that is equivalent to value.

Attributes

Examples

The following example converts each element in an array of unsigned 16-bit integers to a Char value.

C#
ushort[] numbers = { UInt16.MinValue, 40, 160, 255, 1028,
                     2011, UInt16.MaxValue };
char result;
foreach (ushort number in numbers)
{
   result = Convert.ToChar(number);
   Console.WriteLine("{0} converts to '{1}'.", number, result);
}
// The example displays the following output:
//       0 converts to ' '.
//       40 converts to '('.
//       160 converts to ' '.
//       255 converts to 'ÿ'.
//       1028 converts to 'Є'.
//       2011 converts to 'ߛ'.
//       65535 converts to '￿'.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

ToChar(String)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Converts the first character of a specified string to a Unicode character.

C#
public static char ToChar(string value);

Parameters

value
String

A string of length 1.

Returns

A Unicode character that is equivalent to the first and only character in value.

Exceptions

value is null.

The length of value is not 1.

Examples

The following example converts each element in a string array to a Char value.

C#
string nullString = null;
string[] strings = { "A", "This",  '\u0007'.ToString(), nullString };
char result;
foreach (string strng in strings)
{
   try {
      result = Convert.ToChar(strng);
      Console.WriteLine("'{0}' converts to '{1}'.", strng, result);
   }
   catch (FormatException)
   {
      Console.WriteLine("'{0}' is not in the correct format for conversion to a Char.",
                        strng);
   }
   catch (ArgumentNullException) {
      Console.WriteLine("A null string cannot be converted to a Char.");
   }
}
// The example displays the following output:
//       'A' converts to 'A'.
//       'This' is not in the correct format for conversion to a Char.
//       '       ' converts to ' '.
//       A null string cannot be converted to a Char.

Remarks

value must be a string that contains a single character.

If you prefer not to handle an exception if the conversion fails, you can call the Char.TryParse method instead. It returns a Boolean value that indicates whether the conversion succeeded or failed.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

ToChar(Single)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Calling this method always throws InvalidCastException.

C#
public static char ToChar(float value);

Parameters

value
Single

The single-precision floating-point number to convert.

Returns

This conversion is not supported. No value is returned.

Exceptions

This conversion is not supported.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 2.0, 2.1

ToChar(SByte)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Important

This API is not CLS-compliant.

Converts the value of the specified 8-bit signed integer to its equivalent Unicode character.

C#
[System.CLSCompliant(false)]
public static char ToChar(sbyte value);

Parameters

value
SByte

The 8-bit signed integer to convert.

Returns

A Unicode character that is equivalent to value.

Attributes

Exceptions

value is less than Char.MinValue.

Examples

The following example converts an array of signed bytes to Char values.

C#
sbyte[] numbers = { SByte.MinValue, -1, 40, 80, 120, SByte.MaxValue };
char result;
foreach (sbyte number in numbers)
{
   try {
      result = Convert.ToChar(number);
      Console.WriteLine("{0} converts to '{1}'.", number, result);
   }
   catch (OverflowException) {
      Console.WriteLine("{0} is outside the range of the Char data type.",
                        number);
   }
}
// The example displays the following output:
//       -128 is outside the range of the Char data type.
//       -1 is outside the range of the Char data type.
//       40 converts to '('.
//       80 converts to 'P'.
//       120 converts to 'x'.
//       127 converts to '⌂'.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

ToChar(Int64)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Converts the value of the specified 64-bit signed integer to its equivalent Unicode character.

C#
public static char ToChar(long value);

Parameters

value
Int64

The 64-bit signed integer to convert.

Returns

A Unicode character that is equivalent to value.

Exceptions

value is less than Char.MinValue or greater than Char.MaxValue.

Examples

The following example attempts to convert a long integer to a Char, and throws a OverflowException on failure.

C#
public void ConvertLongChar(long longVal) {

    char	charVal = 'a';

    try {
        charVal = System.Convert.ToChar(longVal);
        System.Console.WriteLine("{0} as a char is {1}",
            longVal, charVal);
    }
    catch (System.OverflowException) {
        System.Console.WriteLine(
            "Overflow in long-to-char conversion.");
    }
    
    // A conversion from Char to long cannot overflow.
    longVal = System.Convert.ToInt64(charVal);
    System.Console.WriteLine("{0} as an Int64 is {1}",
        charVal, longVal);
}

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

ToChar(Int16)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Converts the value of the specified 16-bit signed integer to its equivalent Unicode character.

C#
public static char ToChar(short value);

Parameters

value
Int16

The 16-bit signed integer to convert.

Returns

A Unicode character that is equivalent to value.

Exceptions

value is less than Char.MinValue.

Examples

The following example converts an array of signed 16-bit integers to Char values.

C#
short[] numbers = { Int16.MinValue, 0, 40, 160, 255, 1028,
                    2011, Int16.MaxValue };
char result;
foreach (short number in numbers)
{
   try {
      result = Convert.ToChar(number);
      Console.WriteLine("{0} converts to '{1}'.", number, result);
   }
   catch (OverflowException) {
      Console.WriteLine("{0} is outside the range of the Char data type.",
                        number);
   }
}
// The example displays the following output:
//       -32768 is outside the range of the Char data type.
//       0 converts to ' '.
//       40 converts to '('.
//       160 converts to ' '.
//       255 converts to 'ÿ'.
//       1028 converts to 'Є'.
//       2011 converts to 'ߛ'.
//       32767 converts to '翿'.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

ToChar(Double)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Calling this method always throws InvalidCastException.

C#
public static char ToChar(double value);

Parameters

value
Double

The double-precision floating-point number to convert.

Returns

This conversion is not supported. No value is returned.

Exceptions

This conversion is not supported.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 2.0, 2.1

ToChar(Decimal)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Calling this method always throws InvalidCastException.

C#
public static char ToChar(decimal value);

Parameters

value
Decimal

The decimal number to convert.

Returns

This conversion is not supported. No value is returned.

Exceptions

This conversion is not supported.

Examples

The following example attempts to convert a Decimal to Char, and throws InvalidCastException on failure.

C#
public void ConvertCharDecimal(char charVal) {
    Decimal decimalVal = 0;
    
    // Char to decimal conversion is not supported and will always
    // throw an InvalidCastException.
    try {
        decimalVal = System.Convert.ToDecimal(charVal);
    }
    catch (System.InvalidCastException) {
        System.Console.WriteLine(
            "Char-to-Decimal conversion is not supported " +
            "by the .NET Framework.");
    }

    //Decimal to char conversion is also not supported.
    try {
        charVal = System.Convert.ToChar(decimalVal);
    }
    catch (System.InvalidCastException) {
        System.Console.WriteLine(
            "Decimal-to-Char conversion is not supported " +
            "by the .NET Framework.");
    }
}

Applies to

.NET 9 and other versions
Product Versions
.NET Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 2.0, 2.1

ToChar(DateTime)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Calling this method always throws InvalidCastException.

C#
public static char ToChar(DateTime value);

Parameters

value
DateTime

The date and time value to convert.

Returns

This conversion is not supported. No value is returned.

Exceptions

This conversion is not supported.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 2.0, 2.1

ToChar(Char)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Returns the specified Unicode character value; no actual conversion is performed.

C#
public static char ToChar(char value);

Parameters

value
Char

The Unicode character to return.

Returns

value is returned unchanged.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 2.0, 2.1

ToChar(Byte)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Converts the value of the specified 8-bit unsigned integer to its equivalent Unicode character.

C#
public static char ToChar(byte value);

Parameters

value
Byte

The 8-bit unsigned integer to convert.

Returns

A Unicode character that is equivalent to value.

Examples

The following example converts an array of unsigned bytes to Char values.

C#
byte[] bytes = {Byte.MinValue, 40, 80, 120, 180, Byte.MaxValue};
char result;
foreach (byte number in bytes)
{
   result = Convert.ToChar(number);
   Console.WriteLine("{0} converts to '{1}'.", number, result);
}
// The example displays the following output:
//       0 converts to ' '.
//       40 converts to '('.
//       80 converts to 'P'.
//       120 converts to 'x'.
//       180 converts to '''.
//       255 converts to 'ÿ'.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

ToChar(Boolean)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Calling this method always throws InvalidCastException.

C#
public static char ToChar(bool value);

Parameters

value
Boolean

The Boolean value to convert.

Returns

This conversion is not supported. No value is returned.

Exceptions

This conversion is not supported.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 2.0, 2.1

ToChar(Int32)

Source:
Convert.cs
Source:
Convert.cs
Source:
Convert.cs

Converts the value of the specified 32-bit signed integer to its equivalent Unicode character.

C#
public static char ToChar(int value);

Parameters

value
Int32

The 32-bit signed integer to convert.

Returns

A Unicode character that is equivalent to value.

Exceptions

value is less than Char.MinValue or greater than Char.MaxValue.

Examples

The following example converts an array of signed integers to Char values.

C#
int[] numbers = { -1, 0, 40, 160, 255, 1028,
                  2011, 30001, 207154, Int32.MaxValue };
char result;
foreach (int number in numbers)
{
   try {
      result = Convert.ToChar(number);
      Console.WriteLine("{0} converts to '{1}'.", number, result);
   }
   catch (OverflowException) {
      Console.WriteLine("{0} is outside the range of the Char data type.",
                        number);
   }
}
//       -1 is outside the range of the Char data type.
//       0 converts to ' '.
//       40 converts to '('.
//       160 converts to ' '.
//       255 converts to 'ÿ'.
//       1028 converts to 'Є'.
//       2011 converts to 'ߛ'.
//       30001 converts to '由'.
//       207154 is outside the range of the Char data type.
//       2147483647 is outside the range of the Char data type.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0