Use the Count property to determine the number of items in a TreeNodeCollection. This property is commonly used when iterating through a collection to determine the upper bound of the collection. The Count property is also commonly used to determine whether a collection is empty.
The following example demonstrates how to use the Count property to determine the number of items in the TreeNodeCollection. It then performs a preorder traversal of the TreeView control to display the text of each node.
Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.