GetHashCode Method (T)
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EqualityComparer<T>.GetHashCode Method (T)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

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
)

Parameters

obj
Type: T
The object for which to get a hash code.

Return Value

Type: System.Int32
A hash code for the specified object.

Implements

IEqualityComparer<T>.GetHashCode(T)

ExceptionCondition
ArgumentNullException

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.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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