These methods generate a case-insensitive instance of the collection using case-insensitive implementations of the hash code provider and the comparer. The resulting instance can be used like any other instances of that class, although it may behave differently.

For example, suppose two objects with the keys "hello" and "HELLO" are to be added to a hash table. A case-sensitive hash table would create two different entries; whereas, a case-insensitive hash table would throw an exception when adding the second object.

Namespace: System.Collections.Specialized
Assembly: System (in System.dll)
Assembly Versions: 1.0.3300.0, 1.0.5000.0, 2.0.0.0, 4.0.0.0