I need help with loading a list from a file into a TreeView

Question

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C#

private void addTreeNode()
       {
           try
           {
               ofdInput.ShowDialog();
               StreamReader srInput = new StreamReader(ofdInput.FileName);
               tvLinks.Nodes.Clear();
               pbIcon.Image = null;

               for (int X = 1; X <= File.ReadLines(ofdInput.FileName).Count(); X++)
               {
                   try
                   {
                       MessageBox.Show(X + " / " + File.ReadLines(ofdInput.FileName).Count());
                       string URL = srInput.ReadLine();
                       Uri IconLocation = new Uri(URL);
                       string SavePath = IconLocation.Host.Replace("www.", "").Remove(IconLocation.Host.Replace("www.", "").LastIndexOf(".")) + ".ico";
                       if (!File.Exists(SavePath))
                       {
                           WebClient Client = new WebClient();
                           Client.DownloadFile("http://" + IconLocation.Host + "/favicon.ico", SavePath);
                       }
                       pbIcon.ImageLocation = SavePath;

                       if (tvLinks.Nodes.Count > 0)
                       {
                           for (int I = 0; I <= tvLinks.Nodes.Count; I++)
                           {
                               if (tvLinks.Nodes[I].Text == IconLocation.Host.ToString())
                               {
                                   tvLinks.Nodes[I].Nodes.Add(srInput.ReadLine());
                                   break;
                               }
                               else if (I == tvLinks.Nodes.Count - 1)
                               {
                                   tvLinks.Nodes.Add(IconLocation.Host).Nodes.Add(srInput.ReadLine());
                                   break;
                               }
                           }
                       }
                       else
                       {
                           tvLinks.Nodes.Add(IconLocation.Host).Nodes.Add(srInput.ReadLine());
                       }
                   }
                   catch
                   {
                   }
               }

           }
           catch
           {
           }
       }

Posted 30-Dec-11 3:34am

MaXx0r

Updated 30-Dec-11 3:37am

Mehdi Gholam

v2

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Comments

Wendelius 30-Dec-11 9:37am

What is your question exactly?

MaXx0r 30-Dec-11 9:40am

The loading is failing, it needs to be fixed.
If I want to load 10 lines, it only loads 5 lines.

MaXx0r 30-Dec-11 16:56pm

If this could help you, if I put this in:
1
1
2
2
3
3
then I get this out:
1
2
3

3 solutions

Solution 2

check these blogs
Binding Data With ‘TreeView’ Control Asp.net 2.0[^]
http://weblogs.asp.net/scottgu/pages/ASP.NET-2.0-Tips_2C00_-Tricks_2C00_-Recipes-and-Gotchas.aspx[^]
--NDK

Posted 30-Dec-11 18:11pm

NandaKumer

Solution 1

i think u problem is here

C#

if (tvLinks.Nodes[I].Text == IconLocation.Host.ToString())
    {
        tvLinks.Nodes[I].Nodes.Add(srInput.ReadLine());
        break;
    }
    else if (I == tvLinks.Nodes.Count - 1)
    {
        tvLinks.Nodes.Add(IconLocation.Host).Nodes.Add(srInput.ReadLine());
        break;
    }

You most asure that u are parsing well the info in ur text file en every

C#

tvLinks.Nodes[I].Text

a debug is recommended :P

Posted 30-Dec-11 8:54am

darkDercane

Comments

MaXx0r 30-Dec-11 16:51pm

I don't understand what you want me to change :S

darkDercane 30-Dec-11 18:09pm

is not change anything is to check if the values returned from ur file are well obtained :P

MaXx0r 30-Dec-11 19:15pm

The srInput.ReadLine() doesn't return me a string sometimes. In 10 lines, it returns me the first 5 lines, the last 5 lines are returned empty.

darkDercane 3-Jan-12 16:01pm

maybe some line is throwing an error,if i was u, i will check the try catch blocks, notice that u are not controlling efectively any errors, hummm a continue in the catch maybe or a Debug.Write to see whats happening :P

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MaXx0r · Accepted Answer · 2012-01-01T16:56:00

Solution 3

Save and Load TreeView content[^]

Posted 1-Jan-12 16:56pm

MaXx0r