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Convert.ToDouble Method (UInt64)

Converts the value of the specified 64-bit unsigned integer to an equivalent double-precision floating-point number.

This API is not CLS-compliant. 

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

[CLSCompliantAttribute(false)]
public static double ToDouble(
	ulong value
)

Parameters

value
Type: System.UInt64

The 64-bit unsigned integer to convert.

Return Value

Type: System.Double
A double-precision floating-point number that is equivalent to value.

The following example converts each element in an array of UInt64 values to a Double value.

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

foreach (ulong number in numbers)
{
   result = Convert.ToDouble(number);
   Console.WriteLine("Converted the UInt64 value {0} to {1}.",
                     number, result);
}   
// The example displays the following output: 
//    Converted the UInt64 value 0 to 0. 
//    Converted the UInt64 value 121 to 121. 
//    Converted the UInt64 value 12345 to 12345. 
//    Converted the UInt64 value 18446744073709551615 to 1.84467440737096E+19.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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