ListBox.SelectedIndexCollection.IList.Contains Method (Object)
This API supports the product infrastructure and is not intended to be used directly from your code.
For a description of this member, see IList.Contains.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The index to locate in the collection.
Return ValueType: System.Boolean
The ListBox.ObjectCollection a member of the selected indexes stored in the ListBox.SelectedIndexCollection. You can use this method to determine whether a specific item in a multiple-selection list box is selected.method enables you to determine whether an index position from the
Available since 1.1