View Group Collection. Contains(ListViewGroup) Method
Determines whether the specified group is located in the collection.
public: bool Contains(System::Windows::Forms::ListViewGroup ^ value);
public bool Contains (System.Windows.Forms.ListViewGroup value);
member this.Contains : System.Windows.Forms.ListViewGroup -> bool
Public Function Contains (value As ListViewGroup) As Boolean
true if the group is in the collection; otherwise,
You cannot add a ListViewGroup to the collection more than once. However, attempting to add another copy will not throw an exception. Instead, the addition will simply fail. The Add method will return a value of -1 in this case. The AddRange and Insert methods, however, do not have return values. When adding groups using one of these methods, use the Contains method to determine whether a particular ListViewGroup is already in the collection.