ListView.ListViewItemCollection.Add Method (String)
Creates an item with the specified text and adds it to the collection.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
You can use this version of the Add method to create a new ListViewItem to add to a ListView control. The text of the new ListViewItem added to the control is based on the text parameter. If you want to specify an image for the item, use the version of the Add method that accepts an image index as a parameter. If you have an existing ListViewItem that you want to add to the collection, use the version of the Add method that accepts a ListViewItem as its parameter.
If the ListView.Sorting property is set to a value other than SortOrder.None or if the ListViewItemSorter property is set, the list is sorted after the item is added. Otherwise, the item is inserted at the end of the list. If the list is not sorted, you can use the Insert method to insert an item into the ListView at a specific position. To add a set of items to the control in a single operation, use the AddRange method. If you want to use the Add method to add a large number of items to the control, use the BeginUpdate and EndUpdate methods to prevent the ListView from repainting until all items are added. When adding items to a ListView, it is more efficient to sort the items first and then add new items.