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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 Shared Function ToDouble ( _
	value As ULong _
) As Double


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.

Dim numbers() As ULong = { UInt64.MinValue, 121, 12345, UInt64.MaxValue }
Dim result As Double 

For Each number As ULong 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.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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