Interlocked.Exchange Method (IntPtr, IntPtr)

Note: This method is new in the .NET Framework version 2.0.

Sets a platform-specific handle or pointer to a specified value and returns the original value, as an atomic operation.

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

public static IntPtr Exchange (
	ref IntPtr location1,
	IntPtr value
public static IntPtr Exchange (
	/** @ref */ IntPtr location1, 
	IntPtr value
JScript does not support passing value-type arguments by reference.



The variable to set to the specified value.


The value to which the location1 parameter is set.

Return Value

The original value of location1.

Exception typeCondition


The address of location1 is a null pointer.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0