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IHashCodeProvider.GetHashCode Method

Returns a hash code for the specified object.

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

int GetHashCode(
	Object obj
)

Parameters

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.

ExceptionCondition
ArgumentNullException

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

The return value from this method must not be persisted for two reasons. First, the hash function of a class might be altered to generate a better distribution, rendering any values from the old hash function useless. Second, the default implementation of this class does not guarantee that the same value will be returned by different instances.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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