This documentation is archived and is not being maintained.

Convert.ToUInt32 Method (UInt64)

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

This API is not CLS-compliant. 

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

[CLSCompliantAttribute(false)]
public static uint ToUInt32(
	ulong value
)

Parameters

value
Type: System.UInt64
The 64-bit unsigned integer to convert.

Return Value

Type: System.UInt32
A 32-bit unsigned integer that is equivalent to value.

ExceptionCondition
OverflowException

value is greater than UInt32.MaxValue.

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


ulong[] numbers = { UInt64.MinValue, 121, 340, UInt64.MaxValue };
uint result;
foreach (ulong number in numbers)
{
   try {
      result = Convert.ToUInt32(number);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    Converted the UInt64 value 0 to the UInt32 value 0.
//    Converted the UInt64 value 121 to the UInt32 value 121.
//    Converted the UInt64 value 340 to the UInt32 value 340.
//    The UInt64 value 18446744073709551615 is outside the range of the UInt32 type.


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Show: