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Convert.ToDouble Method (Int32)

Converts the value of the specified 32-bit signed integer to an equivalent double-precision floating point number.

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

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

Parameters

value

A 32-bit signed integer.

Return Value

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

The following code sample illustrates the conversion of an Int32 value to a Double one, using ToDouble.

public void ConvertDoubleInt(double doubleVal) {
    
    int     intVal = 0;
    // Double to int conversion can overflow.
    try {
        intVal = System.Convert.ToInt32(doubleVal);
        System.Console.WriteLine("{0} as an int is: {1}",
            doubleVal, intVal);
    } 
    catch (System.OverflowException) {
        System.Console.WriteLine(
            "Overflow in double-to-int conversion.");
    }

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

public void ConvertDoubleInt(double doubleVal)
{
    int intVal = 0;

    // Double to int conversion can overflow.
    try {        
        intVal = System.Convert.ToInt32(doubleVal);
        System.Console.WriteLine("{0} as an int is: {1}", 
            System.Convert.ToString(doubleVal), 
            System.Convert.ToString(intVal));
    }
    catch (System.OverflowException exp) {        
        System.Console.WriteLine("Overflow in double-to-int conversion.");
    }

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

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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