TreeView in dataGridView

Hi there,

I developed a page where i m using jquery treeview plugin to generate tree. It worked fine on FF, IE8 with out ajax.

But when my page loads thro' ajax call in IE8, it is not collapsing or expanding tree.

Any idea?

Thanks in advance.

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Why the label.text is not showing the correct result after clicking three time on treeview.

I have TreeView1 and TreeView2 on my webpage and a label1
TreeView1 a list of items and TreeView2 contains another list of items

Now the first time I click on TreeView1 on the first item which is "Hello" label1.text show me Hello
the second time when I click on TreeView2 on the first item which is "World" label1.text show me World
the third time I clicked on TreeView1 on the first item again which is "Hello" label1.text show me World.  label1.text suppose to show me Hello, right?

What could be the problem what am I missing?


protected void TreeView1_SelectedNodeChanged1(object sender, EventArgs e)
{
Label1.Text = TreeView1.SelectedValue;
}
protected void TreeView2_SelectedNodeChanged(object sender, EventArgs e)
{
Label1.Text = TreeView2.SelectedValue;
}

Hi,

I'm using a Treeview with  ShowCheckBoxes="All" , so basically I have a tree with all CheckBox Nodes. I'm using the TreeView inside an update panel, and populate the Tree code behind dynamically.

My requrements are the following:

1) Select all the children if parent is selected,

2) When parent is selected, and if we de-select a child, set parent unselected

3) Track if new nodes were selected and previously selected nodes were de-selected (becasue I need to update the database according to the selections in the Tree)

For above 1, I do the following:

protected void TreeView1_TreeNodeCheckChanged(object sender, TreeNodeEventArgs e)
    {
        foreach (TreeNode node in TreeView1.Nodes)
        {
            TreeNodeCollection col = node.ChildNodes;
            //select all children when the parent is checked
            if (col != null && node.Checked)
            {
 &nb

Hi,

I tried using this code, on a Treeview inside an update panel, which is populated dynamically in code behind. 

However, it doesnt give me the required functionality.

Following is my aspx code for the TreeView and the TreeView populating logic:

<div id="treelist">
<asp:UpdatePanel ID="UpdatePanel1&quo

I've seen this question posted on all corners of the web... "How do I disable "AutoPostBack" on the ASP.NET 2.0 TreeView control?!"  Unfortunately, most of the answers either don't work, miss the point (don't work right), or boil down to "You can't do it."  I happen to know that this behavior worked perfectly in the IEWebControls TreeView that Microsoft released as an add-on prior to ASP.NET 2.0, however.  So I set out to find a solution for the ASP.NET 2.0 TreeView issue.

In a nutshell, the behavior that I and others are looking for is to have a TreeView rendered in a page that allows the user to expand, contract, and select nodes within the TreeView without causing a PostBack to the server.  This implies two things: (1) the most recently-selected node should be recorded as the currently-selected node [i.e., at PostBack time, the most-recently selected node is actually represented as the SelectedNode]; and (2) the selected node should exhibit the SelectedNodeStyle as specified in the TreeView declaration.

It appears that the TreeView engineers saw only two possible outcomes from selecting a leaf node in a tree: (1) immediately posting back to the server, or (2) immediately navigating to another web page.  They apparently did not consider option (3) just allowing selection in-place on the client, while waiting for a click on so

Hello all

How to make asp.net treeview drag and drop enabled on web. I am unable to find any javascript and there is not any event to make treeview drag and drop enabled.

Kindly suggest me how to use drag and drop facility in treeview.

I don't want to use any third party utility.

waiting for reply..........

Thanks in advance

I want to bind a treeview control so that it display exactly like outlook inbox. How can I do that? 

Note: All data are coming from a single sql table even though you can create to statement to get the child and parent. Please help 

1. I have a treeview on left side in a panel in my aspx page and I have a Text box and a Search button on the right panel. On entering a search criteria and clicking the Search button, I want to get the data needed for the treeview (FYI - I have a webservice call for that) and then populate the treeview completely but keep it collapsed to the root node.

  Each time I enter the search criteria and click the Search button, I don't want to post the entire page (and also don't like the page flicker), how can I achieve this? I know that in order to avoid complete postback upon Search button click, I can do so by client callback and get the data needed for the treeview, but in this case, I have to build the treeview nodes as table - row/cells and handle all the events and handlers myself, which I want to avoid (also means that I won't be able to take advantage of the inherent expand and collapse capabilities of the Treeview). On the other hand, if I use the OnTreeNodePopulate event handling of the Treeview control, using the C# script code on the aspx markup, it doesn't recognize the entered criteria in the Text box. So either way,