ListView.ListViewItemCollection.IList.Add Method (Object)
This API supports the product infrastructure and is not intended to be used directly from your code.
Adds an existing object to the collection.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The object to add to the collection.
Return ValueType: System.Int32
The zero-based index indicating the location of the object if it was added to the collection; otherwise, -1.
Available since 1.1