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IEqualityComparer.GetHashCode Method

Returns a hash code for the specified object.

Namespace: System.Collections.Generic
Assembly: mscorlib (in mscorlib.dll)

int GetHashCode (
	T obj
int GetHashCode (
	T obj
function GetHashCode (
	obj : T
) : int
Not applicable.



The Object for which a hash code is to be returned.

Return Value

A hash code for the specified object.

Exception typeCondition


The type of obj is a reference type and obj is a null reference (Nothing in Visual Basic).

Implement this method to provide a customized hash code for type T,corresponding to the customized equality comparison provided by the Equals method.

Notes to Implementers: Implementations are required to ensure that if the Equals method returns true for two objects x and y, then the value returned by the GetHashCode method for x must equal the value returned for y.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

.NET Compact Framework

Supported in: 2.0

XNA Framework

Supported in: 1.0

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