SAMPLE: Manipulating and Saving the Nodes in a TreeView Control

Last reviewed: January 16, 1998
Article ID: Q172272
The information in this article applies to:
  • Microsoft Visual Basic Learning, Professional, and Enterprise Editions for Windows, version 5.0

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 Software Library:

 ~ Treeview.exe (size: 29611 bytes) 

For more information about downloading files from the Microsoft Software Library, please see the following article in the Microsoft Knowledge Base:

   ARTICLE-ID: Q119591
   TITLE     : How to Obtain Microsoft Support Files from Online Services

MORE INFORMATION

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

(c) Microsoft Corporation 1997, All Rights Reserved. Contributions by Brian Combs, Microsoft Corporation


Additional query words: ActiveX
Keywords : vb5all
Version : WINDOWS:5.0
Platform : WINDOWS
Issue type : kbfile


THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Last reviewed: January 16, 1998
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.