Interlocked.CompareExchange Method (Int32, Int32, Int32)

InterlockedCompareExchange Method (Int32, Int32, Int32)

Compares two 32-bit signed integers for equality and, if they are equal, replaces one of the values.

Namespace: System.Threading
Assembly: mscorlib (in mscorlib.dll) Version: 4.0.0.0

Syntax

public static int CompareExchange(
	ref int location1,
	int value,
	int comparand
)

location1: Type: SystemInt32
The destination, whose value is compared with comparand and possibly replaced.
value: Type: SystemInt32
The value that replaces the destination value if the comparison results in equality.
comparand: Type: SystemInt32
The value that is compared to the value at location1.

Type: Int32
The original value in location1.

Exceptions

Exception	Condition
NullReferenceException	The address of location1 is a null pointer.