ListBox::SelectedIndexCollection::IndexOf Method (Int32)

 

Returns the index within the ListBox::SelectedIndexCollection of the specified index from the ListBox::ObjectCollection of the ListBox.

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

public:
int IndexOf(
	int selectedIndex
)

Parameters

selectedIndex
Type: System::Int32

The zero-based index from the ListBox::ObjectCollection to locate in this collection.

Return Value

Type: System::Int32

The zero-based index in the collection where the specified index of the ListBox::ObjectCollection was located within the ListBox::SelectedIndexCollection; otherwise, negative one (-1).

Once you know that an item is located within the collection (using the Contains method), you can use the IndexOf method to determine where a specific index position within the ListBox::ObjectCollection for the ListBox is stored within the ListBox::SelectedIndexCollection.

.NET Framework
Available since 1.1
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