Solved

TreeView Control in C#

Posted on 2006-06-30
1
274 Views
Last Modified: 2010-04-16

Hi all,

I would like to know how to access all the selected nodes in a tree view control in C#. I have tree with some nodes. I select some of them by using control key, but I am having trouble in my c# program to get access to all the selected tree nodes. It seems like I can only select one  node at a time.

How do I get around this problem ??

Thank you for your help in advance.


Ramesh
0
Comment
Question by:Ramesh4u
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 5

Accepted Solution

by:
aaronfeng earned 50 total points
ID: 17022694
Yes, you are correct for Winform.  You can not retrieve all selected nodes at once, only one at a time.  You will have to traverse all the nodes in order to find all the selected nodes.  In the past, I wrapped the TreeView control, so I can add this functionality in one place; however, you can just create a function to do it for you.

You would do something like this:

private void FindAllCheckedNodes(List<TreeNode> outputNodes, TreeNodeCollection parentNodes) {
  foreach (TreeNode node in parentNodes) {
    if (node.SelectedNode) {
      outputNodes.Add(node);
    }
    FindAllCheckedNodes(outputNodes, node.Nodes);
  }
}

outputNodes will contain all the selected nodes when the function is done running.  You will pass in the root node as the second argument.

Cheers,

Aaron
http://geekswithblogs.net/afeng/
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article describes a simple method to resize a control at runtime.  It includes ready-to-use source code and a complete sample demonstration application.  We'll also talk about C# Extension Methods. Introduction In one of my applications…
We all know that functional code is the leg that any good program stands on when it comes right down to it, however, if your program lacks a good user interface your product may not have the appeal needed to keep your customers happy. This issue can…
This is a high-level webinar that covers the history of enterprise open source database use. It addresses both the advantages companies see in using open source database technologies, as well as the fears and reservations they might have. In this…
Michael from AdRem Software outlines event notifications and Automatic Corrective Actions in network monitoring. Automatic Corrective Actions are scripts, which can automatically run upon discovery of a certain undesirable condition in your network.…

724 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question