IHashCodeProvider.GetHashCode(Object) Method

Reference

Definition

Namespace:: System.Collections

Assembly:: System.Runtime.dll

Assembly:: System.Runtime.Extensions.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Important

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Returns a hash code for the specified object.

public:
 int GetHashCode(System::Object ^ obj);

public int GetHashCode (object obj);

abstract member GetHashCode : obj -> int

Public Function GetHashCode (obj As Object) As Integer

Parameters

obj: Object

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

Returns

Int32

A hash code for the specified object.

Exceptions

ArgumentNullException

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

Remarks

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.

Applies to