EqualityComparer<T>.GetHashCode Method (T)


When overridden in a derived class, serves as a hash function for the specified object for hashing algorithms and data structures, such as a hash table.

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

public abstract int GetHashCode(
	T obj


Type: T

The object for which to get a hash code.

Return Value

Type: System.Int32

A hash code for the specified object.

Exception Condition

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

Notes to Inheritors:

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.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
Return to top