how to work with treeview ?

Question

1.00/5 (2 votes)

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Hi,

I want to work with treeview to show files and folders from a root folder.(exemple : Root).

The Root folder has an folders and files in it.

Thank you for all your help.

Posted 16-Apr-11 23:11pm

guendouz bachir

Updated 17-Apr-11 1:48am

Dalek Dave

v2

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Comments

OriginalGriff 17-Apr-11 5:17am

What have your tried?
Where are you stuck?

pankajupadhyay29 17-Apr-11 5:34am

search on Google you will find a lot of such example.

Dalek Dave 17-Apr-11 7:49am

Edited for Grammar, Syntax and Readability.

4 solutions

Solution 1

I am using this function which is a recursive loop, try it, it is simple.

C++

void AddNode(TreeNode node, DirectoryInfo di)
    {
        foreach (DirectoryInfo d in di.GetDirectories())
        {
            TreeNode FolderNode = new TreeNode(d.Name);
            FolderNode.SelectAction = TreeNodeSelectAction.Expand;
            node.ChildNodes.Add(FolderNode);
            foreach (FileInfo fi in d.GetFiles())
            {
                TreeNode FileNode = new TreeNode(fi.Name);
                FileNode.SelectAction = TreeNodeSelectAction.Select;
                string ftpPath = fi.FullName.Replace(@"\\o7r38-5m0\r3d10f9er25h$\", @"ftp://192.168.2.128/Archive/");
                ftpPath = ftpPath.Replace(@"\", @"/");
                FileNode.NavigateUrl = "JavaScript:ope('"+ftpPath+"')";
                FolderNode.ChildNodes.Add(FileNode);
            }
            AddNode(FolderNode, d);
        }
    }

Thanks

Posted 17-Apr-11 1:00am

Husain Ahmad Khalid

Comments

Dalek Dave 17-Apr-11 7:49am

Good Answer.

Tarun.K.S 17-Apr-11 9:36am

Comment from OP :
thank you so much for all your helps

Prasanta_Prince 17-Apr-11 13:52pm

Good Answer.. :)

Sergey Alexandrovich Kryukov 17-Apr-11 16:30pm

This is pretty bad: you're trying to keep all data in tree view. For big directories, this is not realistic. Misleading approach.
--SA

Husain Ahmad Khalid 17-Apr-11 23:51pm

Dear SAKryukov, I am trying to put all the data in tree view and that is my requirement, I just gave the above example to be used according to anyone's requirement, the importance is its recursive method not the data I am putting in tree view or nodes. still thanks for your comment.

Solution 5

http://msdn.microsoft.com/en-us/library/d4fz6xk2%28v=vs.80%29.aspx[^]

May be this link can help you.

Posted 17-Apr-11 7:55am

Prasanta_Prince

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Tarun.K.S · Accepted Answer · 2011-04-17T01:03:00

Solution 2

Check out these articles :

In WPF :
A Simple WPF Explorer Tree[^]

More:
http://joshsmithonwpf.wordpress.com/2007/11/09/reaction-to-a-simple-wpf-explorer-tree/[^]

http://karlshifflett.wordpress.com/2007/11/10/over-reaction-to-a-simple-wpf-explorer-tree/[^]

In Winforms :
http://www.c-sharpcorner.com/UploadFile/ssrivastav/AdvancedFileExplorerusingCSharpandWindowsForms11232005033710AM/AdvancedFileExplorerusingCSharpandWindowsForms.aspx[^]

In ASP.NET :
http://mattberseth.com/blog/2007/07/hwo_to_create_an_aspnet_ajax_s.html[^]

Posted 17-Apr-11 1:03am

Tarun.K.S

Updated 17-Apr-11 21:48pm

v2

Comments

Dalek Dave 17-Apr-11 7:49am

Good Links.

Tarun.K.S 17-Apr-11 8:01am

Thanks!

Tarun.K.S 17-Apr-11 9:36am

Comment from OP :
thank you so much for all your helps

Prasanta_Prince 17-Apr-11 13:55pm

Good links..

Sergey Alexandrovich Kryukov 17-Apr-11 16:28pm

No, best links are yours, because working with big directory tree is not trivial, must be virtualized (wait a minute, do both works use virtualized approach). I'm so sorry there is not a virtual tree class.
--SA

Tarun.K.S 18-Apr-11 2:54am

If you were talking about Virtualization, I think that's possible if OP wants to use WPF or Silverlight.
Thanks.

Sergey Alexandrovich Kryukov 18-Apr-11 3:11am

I need to know, still did not figure out. It does not matter which library. There is not real virtual tree for any of them (from what I know). I mean more special virtualization: it is wrong to load all directory tree to the UI tree -- it could be too big. Instead, only the currently opened nodes should be shown. All closed visible node should show (+) only due to a fake node under each. Each time the node is closed, the nodes underneath should be deleted and the fake node created. Do you understand the technique? I've described in one or two of my very old Answers... I though the works in your reference do that, but not 100% sure or remember...
--SA

Tarun.K.S 18-Apr-11 3:46am

Aah now I got it. Its called Lazy Loading. I did implement it. And yes the first link by Sacha Barber implements just that. But there is a much better than this, but its again in WPF.
Here is an article by Josh Smith(WPF God!) : http://joshsmithonwpf.wordpress.com/2007/11/09/reaction-to-a-simple-wpf-explorer-tree/
And another by Karl Shifflet : http://karlshifflett.wordpress.com/2007/11/10/over-reaction-to-a-simple-wpf-explorer-tree/

These two are much better. Hope you liked it.
I have updated the links in my answer.

Sergey Alexandrovich Kryukov 18-Apr-11 4:23am

Great, thank you. I was asking to make sure my Answer is not needed, otherwise I would post my own. I thought it would be easier for you to answer to this.
--SA

Tarun.K.S 18-Apr-11 4:48am

Ohkay cheers!

**Dalek Dave** · Accepted Answer · 2011-04-17T01:51:00

Solution 3

Here is a starting point.[^]

And Here is another.[^]

Posted 17-Apr-11 1:51am

Dalek Dave

Comments

Tarun.K.S 17-Apr-11 8:01am

Best Links!

Tarun.K.S 17-Apr-11 9:35am

Comment from OP :
thank you so much for all your helps