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EqualityComparer<T>.IEqualityComparer.GetHashCode Method

Returns a hash code for the specified object.

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

int IEqualityComparer.GetHashCode(
	Object obj


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

Return Value

Type: System.Int32
A hash code for the specified object.




The type of obj is a reference type and obj is null.


obj is of a type that cannot be cast to type T.

This method is a wrapper for the GetHashCode(T) method, so obj must be a type that can be cast to the type specified by the generic type argument T of the current instance.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.