CheckedListBox.CheckedItems Property


The .NET API Reference documentation has a new home. Visit the .NET API Browser on to see the new experience.

Collection of checked items in this CheckedListBox.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

member CheckedItems : CheckedListBox.CheckedItemCollection with get

The collection is a subset of the objects in the Items collection, representing only those items whose System.Windows.Forms.CheckState is Checked or Indeterminate. The indexes in this collection are in ascending order.

The following example enumerates the checked items in the CheckedListBox.CheckedIndexCollection to see what check state an item is in. The example demonstrates using the CheckedIndices property to get the CheckedListBox.CheckedIndexCollection, and the CheckedItems property to get the CheckedListBox.CheckedItemCollection.

The first loop uses the GetItemCheckState method to get the CheckState of each checked item, given the index of the item. The second loop also uses GetItemCheckState, but uses the ListBox.ObjectCollection.IndexOf method to retrieve the index for the item.

To run this example, perform the following steps:

  1. Create a new Windows Forms application.

  2. Add a CheckedListBox and a Button to the form.

  3. Name the button WhatIsChecked, add a handler for its Click event, and copy in the code from the body of the following handler.

  4. Add some items to the CheckedListBox.

  5. Run the example and check some of the check boxes in the list box.

  6. Click the button.

    You will see a series of message boxes that indicate which items were checked.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
Return to top