Manipulating and Saving the Nodes in a TreeView Control

ID: Q172272

The information in this article applies to:

Microsoft Visual Basic Learning, Professional, and Enterprise Editions for Windows, versions 5.0, 6.0

SUMMARY

This sample illustrates how to manipulate nodes with the TreeView control. It also illustrates how to save the node information to an Access database, and then restore them. Additionally, this sample implements the drag-and-drop feature for TreeView control nodes.

MORE INFORMATION

The following file is available for download from the Microsoft Download Center. Click the file name below to download the file:

Treeview.exe

For more information about how to download files from the Microsoft Download Center, please visit the Download Center at the following Web address

http://www.microsoft.com/downloads/search.asp

and then click How to use the Microsoft Download Center.

The purpose of this TreeView sample is to demonstrate the basics of using and manipulating the TreeView control. This example shows how to add Nodes using the five different relationship settings of the Nodes Collection Add Method. It will also allow you to remove a selected Node or branch.

The main focus of the example is to show how to save and restore the Nodes into an Access Database. The algorithm that you use saves the Nodes in viewing order. This allows you to save and restore the TreeView control with the Nodes in the same order as they appeared to the user when the user closed the application.

The sample also shows how to drag and drop Nodes. You can also drag and drop a Node on top of a different Node so that the dragged Node is now the child of the Node it was dropped on.

For more information on the TreeView control please see Help or page 453 of the Professional Features Custom Control Reference.

To use this sample, open Treeview.vbp in the VB IDE and press the F5 key or choose Start from the Run menu.

The following files are included with this sample.

Readme.txt
Treeview.vbp
Bldtree.frm
Bldtree.frx

Additional query words:

Keywords : kbfile kbVBp500 kbVBp600 kbGrpVB
Version : WINDOWS:5.0,6.0
Platform : WINDOWS
Issue type :