Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
ToUInt64 Method

Decimal.ToUInt64 Method

Converts the value of the specified Decimal to the equivalent 64-bit unsigned integer.

This API is not CLS-compliant. 

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

'Declaration
<CLSCompliantAttribute(False)> _
Public Shared Function ToUInt64 ( _
	d As Decimal _
) As ULong

Parameters

d
Type: System.Decimal

The decimal number to convert.

Return Value

Type: System.UInt64
A 64-bit unsigned integer equivalent to the value of d.

ExceptionCondition
OverflowException

d is negative or greater than UInt64.MaxValue.

The return value is the integral part of the decimal value; fractional digits are truncated.

The following example uses the ToUInt64 method to convert decimal numbers to UInt64 values.

Module Example
   Public Sub Main()
      Dim values() As Decimal = { 123d, New Decimal(123000, 0, 0, false, 3), 
                                  123.999d, 18446744073709551615.999d, 
                                  18446744073709551616d, 9223372036854775807.999d, 
                                  9223372036854775808d, -0.999d, -1d, 
                                  -9223372036854775808.999d, 
                                  -9223372036854775809d }

      For Each value In values
         Try 
            Dim number As ULong = Decimal.ToUInt64(value)
            Console.WriteLine("{0} --> {1}", value, number)       
         Catch e As OverflowException
             Console.WriteLine("{0}: {1}", e.GetType().Name, value)
         End Try    
      Next 
   End Sub 
End Module 
' The example displays the following output: 
'     123 --> 123 
'     123.000 --> 123 
'     123.999 --> 123 
'     18446744073709551615.999 --> 18446744073709551615 
'     OverflowException: 18446744073709551616 
'     9223372036854775807.999 --> 9223372036854775807 
'     9223372036854775808 --> 9223372036854775808 
'     -0.999 --> 0 
'     OverflowException: -1 
'     OverflowException: -9223372036854775808.999 
'     OverflowException: -9223372036854775809

.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

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
Show:
© 2015 Microsoft