Web Forms :: How To Get The Value Of A Treeview's Selected Node

Mar 16, 2010

How do I get the value of a treeview's selected node and it's children's values?

TextBox1.Text = TreeView1.SelectedNode.Text; doesn't do it.

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Aug 11, 2010

<asp:TreeView ID="TreeViewCategories" runat="server" ExpandDepth="0" Style="min-height: 200px;
max-height: 500px;" LineImagesFolder="~/TreeLineImages" NodeIndent="0" LeafNodeStyle-CssClass="LeafNodesStyle"
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[code]...

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Jun 30, 2010

Im using an asp.net treeview control and i managed to get code from these forums so that when i select a node no postback is done but i can access the selected node in my C# code behind pages by using javascript.

It works fine i can get the selected node by saying:

TreeNode t = TreeView1.SelectedNode;

and then displaying it to a label on an on click event of a button:

Label1.Text = t.Text;

But what i really need is to either display the node selected to a label (or textbox) or when a node is selected it needs to be highlighted so that the end user knows the option chosen is selected.

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Jun 3, 2010

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[Code]....

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Web Forms :: How To Handle Treeview Selected Node Changed Event

Sep 27, 2010

I don't want to use Sessions to handle each click event inside treeview selected node changed.Secondly, if you suggest me to use treenode.SelectedValue then I would say my values are dyanmically generated.Everytime a node a clicked, the selected node value is sent in the next request xml to get response and xml schema is different for each click. How do I handle this each click event other than using session variables. I thought of using Request.Item (and integrating with URL redirect property) but I don't want to use that.

[Code]....

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Feb 5, 2010

Am new to asp.net.I am creating a site using asp.net(C#), in master page i have treeview control, when i select a item i navigate to url. But selected node is lost, it reset itself, loosing state.

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Feb 9, 2011

I have a treeview with four levels; parent, child, grandchild, great-grandchild. My selectednode is at the grandchild level.

What I'm trying to do is to create a new "Treeview" at the grandchild - NO, I dont wnat to create a new node to the "selectednode" (grandchild). So it should be somelike this:

[Code]....

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Jan 4, 2011

How can I get selected node text and value of asp.net treeview via jQuery?

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Oct 12, 2010

I have a treeview and I am giving the node style in code behind.

Treeview design is as below:

<asp:TreeView ID="tvIARHierarchies" runat="server" NodeIndent="15" ShowExpandCollapse="true"
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While populating the tree-view I have a requirement to bind the one particular level with a different colour. So, I am binding it as below

foreach (DataRow row in dr.GetChildRows("rsParentChild"))
{
TreeNode cChild;
if (row["NAME"].ToString() != "")
{
if (row["Level"].ToString().Trim() == "4")
{
string strColor = "DarkOrange";
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}
}

Now when the tree view loads, the required level 4 nodes are populated in DarkOrange. But, when any node is selected the backcolour changes as #6f9dd9 as per the style specified in the markup. But the fore-colour does not change.

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C# - Access The Selected Node In The Treeview Using The Request Array?

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Suppose I have a treeview, where each treenode contains an id for a different set of user controls. When the user clicks a node, these controls should be loaded to the page. As I understand the ASP page life cycle, dynamic controls should be added in the initialization stage, and postback events will fire later on.

So if the treeview click event happens after I need to add my controls, how do I dynamically add controls based on user postback events?

Edit: I tried the ArronLS:

What I did was add the node value to the session array, and use that when I do the init to choose which form elements to load to the controls of a placeholder control. On the treeview click event, I update the node in the session array, clear the old form elements in the placeholder, and add the new form elements to the controls. When the page is loaded again, it should now find the node at init time, so viewstate problems would be circumvented.

Now I haven't fully tested this yet, but there was another similar post that talks about the problems that might result with the viewstate. They suggest a solution that polls the Request[] part of the context (in their case the dropbox) within the Init control, manually handling some of the postback functionality.

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I have a treeview control where I am dynamically selecting a node depending on user interaction. when a node is selected I want to be able to have the scrollbar go to the location of that selected node in the tree. The scrollbar is simply made by overflow:auto in the div tag where the treeview is located.

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I am having treeview with checkbox and 1 submit button it is taking values from database. Now if i check the checkbox and click the submit button it should display the selected node in the textbox..... Here is my treeview code

public void Load_tree() {   
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[Code] ....

And button click code

protected void Button1_Click(object sender, EventArgs e)        {
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It is showing this exception "Object reference not set to an instance of an object."

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May 7, 2015

I want to show treeview text by click node in next page. but it shows blank. here is my code

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
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tvSPLooping()
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End Sub

[CODE].....

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I have a button(by default disable) to create new folder, when I select the treeview node. Button will be enable on treeview node selection. On click of button.pop up window will open with textbox. I will insert folder name in textbox and submit it. Now New folder should create under selected node of treeview.

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I have a treeview which will be generated dynamically which need to be displayed on left side and when user clicks on a node it need to open a page on the right side of the same page. and each node has different aspx page. so whenever user selects a node the page details should be displayed on the right side .we can use an iframe on the page which will display the different pages clicked on the node.Is there any alternative i can use to display different pages based on the user selection on the right side without using iframe.

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I have a master page containing a tree and 3 dropdown lists. I am populating a context menu on right click of each node, and when clicked on any item of the context menu, it navigates to required pages.

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I can set the selected values for the dropdown lists by making some properties in master page.
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In my content page, i have got the valuepath of the right clicked node.

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What I am acheiving is a simple treeview which will have a tree structure

dir1
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dir2
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I have put the code

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but it falls over on the 2nd line with object not set

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I created a tree view and and added nodes from database. following is the code.

[Code]....

[Code]....

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How can I set spacing between each node in treeview? the spacing is not the same for all the nodes. I want to manually add different spacing between leaf node and parent node.

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Feb 3, 2011

after populating treeview and i want to traverse in all the node and want to attach javascript if the node has child node. how to do it in asp.net when work with treeview control.

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I am binding a treeview through a xml file.

my xml file's code.

[Code]....

I want to add a link of my default.aspx to <MainMenu> tag.

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Web Forms :: How To Remove A Parent Node In Treeview

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My Tree View Conain the All Department

Admin

office

Department

but i require the Remove the Parent Node( All Department) not child node

Admin

office

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At webform I have TreeView whith adding nodes from code:

[Code]....

as you can see, I want make space formatting in node, but after show it node to browser, all redundant spaces was removed. How I can deny removing spaces in treeview?

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