GetHashCode Method

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Returns a hash code for the specified object.

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

abstract GetHashCode : 
        obj:Object -> int 


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 nullNothingnullptrunita null reference (Nothing in Visual Basic).

Implement this method to provide customized hash codes for objects,corresponding to the customized equality comparison provided by the Equals method.

Notes to Implementers

Implementations are required to ensure that if the Equals method returns true for two objects x and y, then the value returned by the GetHashCode method for x must equal the value returned for y.