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Hashtable.GetHash Method

Returns the hash code for the specified key.

Namespace:  System.Collections
Assembly:  mscorlib (in mscorlib.dll)
protected virtual int GetHash(
	Object key
)

Parameters

key
Type: System.Object

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

Return Value

Type: System.Int32
The hash code for key.
ExceptionCondition
NullReferenceException

key is null.

If the hash table was created with a specific IHashCodeProvider implementation, this method uses that hash code provider; otherwise, it uses the Object.GetHashCode implementation of key.

This method is an O(1) operation.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, 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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