Add Control To TreeNode And Get Value From That?

Jan 13, 2011

I would like to Add a DropDownList to TreeView for each node and then I will get the value when I click a button.Is there any way to do like that.Let me know the way you know.

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C# - Adding Property To TreeNode?

Jul 8, 2010

I have a webpage that uses a Treeview. In the treeview are nodes and i use the Text and Value property, but i need one more. I need one boolean property called IsFile.

I make the Nodes and add them to the tree programmatically. I have a class Called NavTreeNodes that inherits the TreeNode class and ads this bool.

public class NavTreeNode : TreeNode
{
private bool _IsFile;
public bool IsFile
{
get { return _IsFile; }
set { _IsFile = value; }
}
public NavTreeNode()
{ }
}

And when i make a new TreeNode i use this class. Everything works until i try to get the data from the treeview in the SelectedNodeChanged on the TreeView function.

protected void treeview_Navigation_SelectedNodeChanged(object sender, EventArgs e)
{
TreeNode node = treeview_Navigation.SelectedNode;
NavTreeNode NNode = node as NavTreeNode;
Response.Write(NNode.IsFile.ToString());
}

I get a "Object reference not set to an instance of an object." error when i try this. I cant even get the Value or the Text value using this method.

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I couldn't find one that fit for the Treeview control. I have successfully binded my XmlDataSource to my Treeview control. Here is the XML

<ROOT rootName="Sales Literature Groups">
<saleslit_group slgrp_id="1" slgrp_name="PLCs" slgrp_loc="3A">
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<sales_literature saleslit_id="2" saleslit_description="Literature #2" is_tube_mailer="0"/>
<sales_literature saleslit_id="3" saleslit_description="Literature #3" is_tube_mailer="1"/>
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Sep 10, 2010

I would like to set text attribute of a treenode. But I want to do this in HTML. I tried it:

<asp:TreeNode
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Currently I am working on SessionState with SQL. I have problem. I would like to serialize TreeNode. This TreeNode pbject will be assigned to Session and this is declare as below.

private _treeNode as TreeNode <-- member variable

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Jan 11, 2011

i am using a context menu for each treenode, the example i am using has front end code as

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this works fine but i need to add text via the code behind. when i do this the html is not converted and is displayed as text.

TreeNode tn = new TreeNode();
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how can i fix this?

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Web Forms :: 'TreeNode' Does Not Contain A Definition For 'SelectAction'?

May 7, 2010

I don't get it... why am I getting the error "'TreeNode' does not contain a definition for 'SelectAction'"

This is s .net 3.5 site here is the code behind... I have red squiggles under node.SeletAction, node.opulateOnDemand, node.expand, node.value...

[Code]....

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I have a treeview with ID treeview1 which gets populated from xmlresponse somelike like:

<root>
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<Products ..../>
<Property .../>
</root>

I get Television displayed as treenode. Now I have two issues:

1) if i click on Television i need to make a new xmlrequest based on its ProductID. I tried to bind TreeView1.selectednode.value as property innertext in my xmlrequest but it doesn't accept it. However, I am puzzled how to use xpath @selected to get this particualr clicked node ProductID to be passed as Property innertext.

2) I need to diplay in treeview1 something like : Television(50). So, how to append count to televsion here.

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Web Forms :: Refresh Page On Treenode Select?

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How can achive this. I have tried the following

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I have to develope one page using tree view in my application,page can have one treeview which is bind from database,i did the binding procedure, now senario as like below...

Treeview have parent node as CourseName.....

Each course have more than one sujbect,so child node of course node have multiple child nodes....

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Now whenever user click on chapter node i have to display topics for selected chapter on grid.....

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I am working on a page where I am looking a relationship property of Treeview.

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Feb 11, 2010

I have this working in several pages in my site but in one page it wont work!

this is the hierarchyof the page.

I have a treeview in a div,in an asp:panel, in an updatepanel in a user control. the panel is shown/hidden using the ajax modalpopupextender.

this user control is placed in a content page (using a master page).

Now that you got the above, I'll let you know what ive tried already.

I tried doing this:(which works perfectly when the treeview is placed simply in an aspx page)

[Code]....

tried using also :

[Code]....

Basically i kept playing around with it trying different ways but seems like the selected node is just not visible even though i call this JS function after i have selected the Node in code behind.

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I am trying to extend the TreeView and TreeNode class and use it in an .aspx page. My development environment is VS 2005. I put the following code inside of a single .cs file in my App_Code folder:

public class MyTreeview : TreeView {
protected override void TreeNode CreateNode() { return new MyTreeNode(); }
}
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<%
@
Register
TagPrefix="R7A"
TagName
="CoATree"
Src="../App_Code/ExtendedTreeNode.cs"........................

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Sep 14, 2010

How can I do to change backcolor of treenode?

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What I need to do is perform some kind of decision statement and when true I need to change the backcolor of a treenode to grey, so that it has a grey box around the whole text. There is no backcolor property for the tree node and I don't need it applied all the time so I don't think a CSS class will do this.

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how to popup datalist when selected treenode is clicked in treeview .I am using c#.

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I am new to asp.net and im doing a web page in which i have a teeview in my detailview.I add nodes to treeview in detailview itemscreated event and its working fine ,adding nodes accordingly except when i click on the node of treeview the nodes are added again. how to disable the click event of treeview.

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Web Forms :: Call A Javascript Function When Treenode Selected In A Asp:TreeView?

Feb 23, 2011

I want to ask if there is any way to call a javascript function when treenode selected in a asp:TreeView?

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Web Forms :: Check/uncheck The Checkbox In A Tree Node By Just Clicking On The Treenode Text?

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Is there a way to check/uncheck the checkbox in a tree node by just clicking on the treenode text. I tried something like this - I can check the right checkbox when I click on the node text but I am unable to uncheck it. Is there a way to do that.

protected void tv_SelectedNodeChanged(object sender, EventArgs e)
{
TreeNode tn = tv.SelectedNode;
tn.Checked = true;
this.tv.SelectedNode.Selected = false;
}

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I have created one website with Master and content page . I have taken TreeView Control on master page. And I wants that when I click to tree node the i can get value of tree node on content page and bind the dropdown of content page according to value of master page.

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