public Parameter this[
	Definition definition
] { get; }

Public ReadOnly Property Parameter ( _
	definition As Definition _
) As Parameter
	Get

public:
property Parameter^ Parameter[Definition^ definition] {
	Parameter^ get (Definition^ definition);
}

Parameters are a generic form of data storage within elements. The parameters are visible through the Autodesk Revit user interface in the Element Properties dialog. An element can only have one instance of a parameter with a specific definition. By using this method you can retrieve that parameter based on definition.