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Defines methods to support the comparison of objects for equality.
Public Interface IEqualityComparer
The IEqualityComparer type exposes the following members.
Determines whether the specified objects are equal.
Returns a hash code for the specified object.
This interface allows the implementation of customized equality comparison for collections. That is, you can create your own definition of equality, and specify that this definition be used with a collection type that accepts the IEqualityComparer interface. In the .NET Framework, constructors of the Hashtable, NameValueCollection, and OrderedDictionary collection types accept this interface.
This interface supports only equality comparisons. Customization of comparisons for sorting and ordering is provided by the IComparer interface.