Parameters

obj

The object for which a hash code is to be generated. [Edit]

Returns

A int containing the hash code for the specified object. [Edit]

Exceptions

Type	Reason
ArgumentNullException	obj is null. [Edit]

Remarks

Operation

If obj is null, it is required that a call to IHashCodeProvider.GetHashCode(object) throw ArgumentNullException.

Note to Inheritors

Implement this method to generate a better hash table distribution than the default method provided by the type of the object for which the hash code is being generated.

Usage

The value returned by this method should not be persisted past the lifetime of the application that created the value. The first reason is that the hash function of a class might be altered to generate a better distribution, rendering any values from the old hash function useless. The second reason is that the default implementation of this class does not guarantee that the same value will be returned by different instances.

[Edit]

Requirements

Namespace: System.Collections
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0