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Convert.ToDouble Method (Byte)

Converts the value of the specified 8-bit unsigned integer to the equivalent double-precision floating point number.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

public static double ToDouble (
	byte value
)
public static double ToDouble (
	byte value
)
public static function ToDouble (
	value : byte
) : double
Not applicable.

Parameters

value

An 8-bit unsigned integer.

Return Value

The double-precision floating point number equivalent to the value of value.

The following code sample illustrates the conversion of a Byte value to a Double one, using ToDouble.

public void ConvertDoubleByte(double doubleVal) {
    byte    byteVal = 0;

    // Double to byte conversion can overflow.
    try {
        byteVal = System.Convert.ToByte(doubleVal);
        System.Console.WriteLine("{0} as a byte is: {1}.",
            doubleVal, byteVal);
    } 
    catch (System.OverflowException) {
        System.Console.WriteLine(
            "Overflow in double-to-byte conversion.");
    }

    // Byte to double conversion cannot overflow.
    doubleVal = System.Convert.ToDouble(byteVal);
    System.Console.WriteLine("{0} as a double is: {1}.",
        byteVal, doubleVal);
}

public void ConvertDoubleByte(double doubleVal)
{
    ubyte byteVal = 0;

    // Double to byte conversion can overflow.
    try {        
        byteVal = System.Convert.ToByte(doubleVal);
        System.Console.WriteLine("{0} as a byte is: {1}.", 
            System.Convert.ToString(doubleVal), 
            System.Convert.ToString(byteVal));
    }
    catch (System.OverflowException exp) {        
        System.Console.WriteLine("Overflow in double-to-byte conversion.");
    }

    // Byte to double conversion cannot overflow.
    doubleVal = System.Convert.ToDouble(byteVal);
    System.Console.WriteLine("{0} as a double is: {1}.", 
        System.Convert.ToString(byteVal), 
        System.Convert.ToString(doubleVal));
} //ConvertDoubleByte

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

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