Add one or more strings to the list of valid values.

Determines whether the specified object is equal to the current object.

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.

Serves as the default hash function.

Gets the Type of the current instance.

Given a string value as an object, return true if the value is in the list.

Given a string value, return true if the value is in the list.

Creates a shallow copy of the current Object.

Returns a string that represents the current object.