Solved

Iterating through a treeView

Posted on 2006-06-16
5
508 Views
Last Modified: 2012-05-05
Hi Experts,

      Maybe it's just me, but I think that working with the TreeView Control is 10 times harder than it has to be.  Here's what I need to do:

  I need to dynamically populate a treeView.  I DON'T WANT TO USE ANY LINKED LISTS OR ARRAY LISTS OR ANY OF THAT.  My app is way too complicated to make the use of lists practical.  I basically need to check if a certain grand child nood exists, if it does I need to update it, if not I need to create it.  Please keep in mind that I don't know if there's anything in the TreeView yet at all.  It could be completely empty in which case I need to make the Parent, Child, and, GrandChild nodes for that particular record.  If it does exist, then I need to update the grandchild's name.
  Also, How can I put an icon in front of a certaing grandchild node.  Not all of them, just certain ones.

Thanks,
axnst2
0
Comment
Question by:axnst2
[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
  • 4
5 Comments
 

Author Comment

by:axnst2
ID: 16919645
I am working in C#
0
 

Author Comment

by:axnst2
ID: 16919647
.NET 2005
0
 
LVL 86

Accepted Solution

by:
Mike Tomlinson earned 500 total points
ID: 16919943
0
 

Author Comment

by:axnst2
ID: 16920538
This is what I endedd up doing:

void FindInTreeView()
        {
            bool equipAlreadyExists = false;
            int locatedEquipIndex = 0;

            if (treeView1.Nodes[0].Nodes.Count > 0)
            {// If TreeView isn't completely empty

                int equipCounter=0;

                // Check to see if Equipment is already in the list
                foreach (TreeNode tn in treeView1.Nodes[0].Nodes)
                {
                    if (tn.Text == tempEquip.IPAddress)
                    {// It exists
                        equipAlreadyExists = true;
                        locatedEquipIndex = equipCounter;
                    }
                    equipCounter++;
                }

                // If it exists, update it
                if (equipAlreadyExists)
                {
                    treeView1.BeginUpdate();
                    treeView1.Nodes[0].Nodes[locatedEquipIndex].Nodes[0].Text = "Equipment Type: " + tempEquip.EquipType;
                    treeView1.Nodes[0].Nodes[locatedEquipIndex].Nodes[1].Text = "Comm. Status: " + tempEquip.CommStatus;
                    treeView1.Nodes[0].Nodes[locatedEquipIndex].Nodes[2].Text = "Comm. Time: " + tempEquip.LastCommTime + " ms";
                    treeView1.EndUpdate();
                }
                else // If equipment doesn't exist, add it
                {
                    treeView1.BeginUpdate();
                    treeView1.Nodes[0].Nodes.Add(tempEquip.IPAddress);
                    treeView1.Nodes[0].Nodes[equipCounter].Nodes.Add("Equipment Type: " + tempEquip.EquipType);
                    treeView1.Nodes[0].Nodes[equipCounter].Nodes.Add("Comm. Status: " + tempEquip.CommStatus);
                    treeView1.Nodes[0].Nodes[equipCounter].Nodes.Add("Comm. Time: " + tempEquip.LastCommTime + " ms");
                    treeView1.EndUpdate();
                }

            }
            else// If TreeView is empty
            {

                // Add new equipment
                treeView1.BeginUpdate();
                treeView1.Nodes[0].Nodes.Add(tempEquip.IPAddress);
                treeView1.Nodes[0].FirstNode.Nodes.Add("Equipment Type: " + tempEquip.EquipType);
                treeView1.Nodes[0].FirstNode.Nodes.Add("Comm. Status: " + tempEquip.CommStatus);
                treeView1.Nodes[0].FirstNode.Nodes.Add("Comm. Time: " + tempEquip.LastCommTime + " ms");
                treeView1.EndUpdate();
            }
            treeView1.ExpandAll();
        }

This works well for me.  TriewWiev still stinks though!
0
 

Author Comment

by:axnst2
ID: 16920562
Thanks for your help though Idle!
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

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…
Entity Framework is a powerful tool to help you interact with the DataBase but still doesn't help much when we have a Stored Procedure that returns more than one resultset. The solution takes some of out-of-the-box thinking; read on!
This is my first video review of Microsoft Bookings, I will be doing a part two with a bit more information, but wanted to get this out to you folks.
Add bar graphs to Access queries using Unicode block characters. Graphs appear on every record in the color you want. Give life to numbers. Hopes this gives you ideas on visualizing your data in new ways ~ Create a calculated field in a query: …

617 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