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IndexOf Method

CheckedListBox.CheckedItemCollection.IndexOf Method

Returns an index into the collection of checked items.

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

public int IndexOf(
	Object item


Type: System.Object

The object whose index you want to retrieve. This object must belong to the checked items collection.

Return Value

Type: System.Int32
The index of the object in the checked item collection or -1 if the object is not in the collection. For more information, see the examples in the CheckedListBox.CheckedItemCollection class overview.



The CheckedItems collection is a subset of the objects in the Items collection, representing only items that are checked. This collection is ordered in ascending order.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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