I have an Update Panel on my web form. After click on the button inside panel, program generates treeview dynamically.
After postback, i initialize tree in Page Load.
The problem:
After clicking on the root node, node doesn't expand.
Question:
How it will be better to save and load expand (collapse) nodes state of my treeview?
I am trying to maintain the state of a TreeView on postback. I have a simple method to save the state of the tree on postback but it does not seem to capture the Expanded and the Selected state. Also, i have another method to restore the tree state after a postback. When a user selects an item in the TreeView i would like to have this item highlighted/selected. Along those lines i would also like to have all expanded or collapsed mainated after a postback.
[Code]....
store the state of a TreeView on postback?
I created a sitemap with a treeview navigation in my aspx site. I am hoping someone can show me the code to put in a Masterpage so that when I expand a child node, all other nodes collapse, and when I expand another node, the previous expanded node collapses.
I have an example here of what I am trying to accomplish:
[URL]
I am using asp.net with VB.
I have been scouring the internet looking for a solution, but so far haven't found anything that works.
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.
View 4 RepliesI have a list of treeview nodes. When I click on a node it redirect me to a page but my treeview nodes go back to my orginal settings for the nodes meaning doesn't keep the node you click on expand when directing to another page. Is there away to keep the states of the collepse nodes?
View 3 Replieshow to read selected node and its parent node values for treeview in asp.net in JAVAscript.
View 3 RepliesI 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.
View 5 RepliesI have a simple Treeview based on my SiteMap with Security Trimming turned on.
Rather than defining a fixed ExpandedDepth in the Treeview, is it possible to add a property to the SiteMap that indicates which nodes should be expanded?
I've done my research about how will i save the selectednode in treeview and scrollbar state after page navigation but i can't find any solution. Is there a way or alternative way on how to do this?
View 6 RepliesI have a public folder on the server that contains recursively nested sub folders. In the various Leaf folders contains Images. I wanted to create a server side file browser that will display the Images to the user.I am using the ASP.NET TreeView Control.I create the tree nodes using PopulateOnDemand.
If the user click on a leaf directory I want the images in that folder to be displayed in a DataList Control.The problem is that when I click on a sub tree node (after I expanded it parent node)All the expanded sub tree disappears and only the parent node is showed with no + sign next to it !!( I have set the TreeView's PopulateNodesFromClient property to true )Here is the code :
<asp:TreeView ID="TreeView1" runat="server" AutoGenerateDataBindings="False"
onselectednodechanged="TreeView1_SelectedNodeChanged"
ontreenodepopulate="TreeView1_TreeNodePopulate">
</asp:TreeView> [code]....
I have Already used many treeview in my web page, when any user try to expand them the web page view will become not so good because every treeview has expanded.how can I close every treeview when any user expand one of them?
View 12 RepliesI 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.
My problem is after navigating to the required page, the selected values from the drop down lists and the selected node from the tree are getting cleared.
I can set the selected values for the dropdown lists by making some properties in master page.
But how do i maintain the selected node?
In my content page, i have got the valuepath of the right clicked node.
Or is there any other way than setting the properties in master page?
What I am acheiving is a simple treeview which will have a tree structure
dir1
-- xx
dir2
Simple stuff !. Here is the code
TreeNode tree1 = new TreeNode("dir1", "", "", "dir1", "");
tree.Nodes.Add(tree1);
TreeNode node = new TreeNode("xx", "xx");
tree1.ChildNodes.Add(node);
TreeNode tree2 = new TreeNode("dir2", "", "", "dir2", "");
tree.Nodes.Add(tree2);
Now I want to do is collapse all the tree and find a particular node e.g dir1xx
I have put the code
tree.CollapseAll();
tree.FindNode("dir1").Select(); <-- falls over
tree.FindNode("dir1").Expand();
tree.FindNode("dir1/xx").Select();
tree.FindNode("dir1/xx").Expand();
but it falls over on the 2nd line with object not set
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.
I created a tree view and and added nodes from database. following is the code.
[Code]....
[Code]....
Bydefault I'm diplaying checkbox to each node. But I also need to add one more check box with text as "Is View" to each node, how is this possible.
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.
View 4 Repliesafter 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.
View 1 RepliesI 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.
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
Department
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?
I have a C# page with 2 Panels, in the one at left is a treeview, and the other one is blank. What i intend to do is, avoid the framesets, and directly work with asp Panels. And when a node is clicked, target the blank panel.
View 3 RepliesI'm looking for a treeview with drop down list on each node. the treeview should be dynamicllay created on server side. Each node will have a drop down list and each item of the list will have a different color. When I create the tree on client side, I will have to select dropdown list accroding to a data table.
Also, on the client side, the user should be able to select each node and its leaf to group set the drop down list for one branch.
Is there any controller I can use rather than write my one tree?
How can i put Checkboxes at the end of the node of treeview dynamically. My treeview is dynamically generated.
View 1 Replies<asp:TreeView ID="TreeViewCategories" runat="server" ExpandDepth="0" Style="min-height: 200px;
max-height: 500px;" LineImagesFolder="~/TreeLineImages" NodeIndent="0" LeafNodeStyle-CssClass="LeafNodesStyle"
CssClass="TreeView" NodeStyle-CssClass="NodeStyle" ParentNodeStyle-CssClass="ParentNodeStyle"
[code]...
Why does microsoft make objects in .NET with incomplete behavioural methods, then expect everyone to use a client side "language" to help complete the methods? I don't wanna have to use Javascript to keep focus on my leaf node in my TreeView after clicking it. I want a server side answer to my question, but if that's impossible I guess I can run ANOTHER javascript bandaid to do this, since I guess Microsoft doesn't have a solution. Oh and By the Way if your going to post an answer please remember I'm using WEBFORMS not WINFORMS. God help people who try to run my app (or any .net app) and don't have Javascript enabled on thier browsers. Does Microsoft own Javascript? Maybe since they rely so heavily on help from the client side to achieve behaviours, they ought to think about acquiring it.
View 3 Replies