Interlocked.Exchange Method (Int64%, Int64)

Sets a 64-bit signed integer to a specified value and returns the original value, as an atomic operation.

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

public static long Exchange(
	ref long location1,
	long value


Type: System.Int64%
The variable to set to the specified value.
Type: System.Int64
The value to which the location1 parameter is set.

Return Value

Type: System.Int64
The original value of location1.


The address of location1 is a null pointer.

Version Notes

Silverlight for Windows Phone Silverlight for Windows Phone

 64-bit members of the Interlocked class are present but not supported.


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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