ListView.CheckedIndexCollection Class
Assembly: System.Windows.Forms (in system.windows.forms.dll)
A ListView.CheckedIndexCollection stores the indexes to the checked items in a ListView control. Items can be checked only if the CheckBoxes property of the ListView control is set to true. The indexes stored in the ListView.CheckedIndexCollection are index positions within the ListView.ListViewItemCollection. The ListView.ListViewItemCollection stores all items displayed in the ListView control.
The following table is an example of how the ListView.ListViewItemCollection stores the items of the ListView as well as their checked states in an example ListView control.
| Index | Item | Checked state in the ListView |
|---|---|---|
| 0 | Item1 | Unchecked |
| 1 | Item2 | Checked |
| 2 | Item3 | Unchecked |
| 3 | Item4 | Checked |
| 4 | Item5 | Checked |
Based on the ListView.ListViewItemCollection example in the previous table, the following table demonstrates how the ListView.CheckedIndexCollection would appear.
| Index | Index of checked item in ListViewItemCollection |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 4 |
You can use the properties and methods of this class to perform a variety of tasks with the collection. The Contains method enables you to determine whether an index position from the ListView.ListViewItemCollection is one of the indexes stored in the ListView.CheckedIndexCollection. Once you know that the item is in the collection, you can use the IndexOf method to determine the position of the index in the ListView.CheckedIndexCollection.
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.