System.Design 2.0.0.0 System.Collections.CollectionBase To be added. Represents a collection of objects. Constructor 2.0.0.0 To be added. Initializes a new instance of the class. Method 2.0.0.0 System.Int32 To be added. Adds the supplied to the current collection. The index at which the value has been added. The to add. Method 2.0.0.0 System.Boolean To be added. Determines whether the contains a specific element. true if the contains the specified value; otherwise, false. The to locate in the . Method 2.0.0.0 System.Void To be added. Copies the elements of the current collection into the supplied array, starting at the specified array index. The one-dimensional array that is the destination of the elements copied from the current collection. The array must have zero-based indexing. The zero-based index in at which copying begins. Method 2.0.0.0 System.Int32 To be added. Determines the index of a specific item in the collection. The zero-based index of the first occurrence of within the entire , if found; otherwise, -1. The to locate in the collection. Method 2.0.0.0 System.Void To be added. Inserts an element into the at the specified index. The zero-based index at which should be inserted. The to insert. Property 2.0.0.0 System.ComponentModel.Design.DesignerActionItem To be added. To be added. To be added. To be added. Method 2.0.0.0 System.Void To be added. Removes the first occurrence of a specific object from the . The to remove from the .