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ToUInt64 Method (Int32)

Convert.ToUInt64 Method (Int32)

Converts the value of the specified 32-bit signed integer to an equivalent 64-bit unsigned integer.

This API is not CLS-compliant. 

Namespace:  System
Assemblies:   System.Runtime.Extensions (in System.Runtime.Extensions.dll)
  mscorlib (in mscorlib.dll)

<CLSCompliantAttribute(False)> _
Public Shared Function ToUInt64 ( _
	value As Integer _
) As ULong


Type: System.Int32

The 32-bit signed integer to convert.

Return Value

Type: System.UInt64
A 64-bit unsigned integer that is equivalent to value.


value is less than zero.

The following example attempts to convert each element in an array of integers to an unsigned long integer.

Dim numbers() As Integer = { Int32.MinValue, -1, 0, 121, 340, Int32.MaxValue }
Dim result As ULong 

For Each number As Integer In numbers
      result = Convert.ToUInt64(number)
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.", _
                        number.GetType().Name, number)
   End Try    
' The example displays the following output: 
'    The Int32 value -2147483648 is outside the range of the UInt64 type. 
'    The Int32 value -1 is outside the range of the UInt64 type. 
'    Converted the Int32 value 0 to the UInt64 value 0. 
'    Converted the Int32 value 121 to the UInt64 value 121. 
'    Converted the Int32 value 340 to the UInt64 value 340. 
'    Converted the Int32 value 2147483647 to the UInt64 value 2147483647.

.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
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