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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)

'Declaration
Public Shared Function Exchange ( _
	ByRef location1 As Long, _
	value As Long _
) As Long

Parameters

location1
Type: System.Int64

The variable to set to the specified value.

value
Type: System.Int64

The value to which the location1 parameter is set.

Return Value

Type: System.Int64
The original value of location1.

ExceptionCondition
NullReferenceException

The address of location1 is a null pointer.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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