Interlocked.Add Method (Int32, Int32)

 

Adds two 32-bit integers and replaces the first integer with the sum, as an atomic operation.

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

static member Add : 
        location1:int byref *
        value:int -> int

Parameters

location1
Type: System.Int32

A variable containing the first value to be added. The sum of the two values is stored in location1.

value
Type: System.Int32

The value to be added to the integer at location1.

Return Value

Type: System.Int32

The new value stored at location1.

Exception Condition
NullReferenceException

The address of location1 is a null pointer.

This method handles an overflow condition by wrapping: if the value at location1 is Int32.MaxValue and value is 1, the result is Int32.MinValue; if value is 2, the result is (Int32.MinValue + 1); and so on. No exception is thrown.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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