Web Forms :: TreeView - Maintain Expanded Or Selected State Of Nodes?
Feb 8, 2010
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?
View 3 Replies
Similar Messages:
Nov 1, 2010
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?
View 3 Replies
Feb 10, 2010
I am using master page.
(1) to maintain the state of the treeview without storing it in session or view state or
(2) I am binding the treeview control dynamically from a xml. Even if I use session state is ther any option to use it without using SelectedNodeChanged event because when u click the treeview node , first master page will postback for this event and then the child page and then again the master page will post pack (as the child page has inherited the master page). So here in this case we are posting the master page twice and it is reducing the performance.
View 2 Replies
Mar 4, 2011
I am using a treeview in my master page and every node having link to its container page.That means click on any child node of treeview its redirect to another page by taking some value.
Now every time I click on nodes of treeview, its get collaps when child page loaded...
Now regaring maintain state of treeview across my web application...
View 13 Replies
Nov 22, 2015
<div>
<asp:TreeView ID="TreeView1" runat="server" ExpandDepth="0" ShowLines="true"
OnSelectedNodeChanged="TreeView1_SelectedNodeChanged">
<HoverNodeStyle Font-Underline="True" ForeColor="#6666AA" />
<NodeStyle Font-Names="Tahoma" Font-Size="8pt" ForeColor="Black" HorizontalPadding="2px"
NodeSpacing="0px" VerticalPadding="2px"></NodeStyle>
[CODE]...
View 1 Replies
Feb 18, 2010
I have a code that load hierarchy( nodes) into trew view.. by selecting different date, the hierarchy result from SP will show in the treeview..
the problem is even though I select a different date.. the result( node) of previous date is still showing in addition to the new hierarchy result...
it;s like the new result node is appended to existing node.. instead of refreshing the node and showing only the new result. How can I clear out the treeview nodes before adding new nodes from different date?
View 1 Replies
Mar 13, 2012
how can add , edit, delete nodes and sub nodes in treeview in vb.net 2005 and sql server2005
View 1 Replies
May 7, 2015
Code to drag and drop a TreeNode to another control or tag such as Div or even another TreeView.
View 1 Replies
Mar 21, 2010
I have a gridview with paging option. I want to maintain the state of the checkbox column in gridview for each page.
I used vb.net coding.
I used the following link for this purpose,
[URL]
It worked properly.
But when i check all the checkbox of page1 in gridview and click the next page, it shows that all checkbox of page2 is checked.
I know the reason for it. Because the index of the gridview row for each page will start from zero only. This causes the problem.
My requirement: I will check 2 checkbox in page1 of gridview and 1 check box in page2. I want to maintain their individual page state checkbox.
View 2 Replies
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.
View 4 Replies
Jun 8, 2010
I 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?
View 3 Replies
Apr 4, 2010
I 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]....
View 1 Replies
Dec 1, 2010
Should be easy but I cannot find a property which allows me to right align the nodes in a treeview.
I've tried adding text-align: right in a CSS declaration linked from NodeStyle > CssClass. Nothing.
View 2 Replies
Sep 14, 2010
Second: Is there a way to select more than one node in tree view (like we do in Windows Explorer, by pressing SHIFT or CTRL) ?
View 2 Replies
Feb 4, 2011
In my asp.net application I'm using TreeView control, and at some point I noticed that TreeView.Nodes property doesn't return all the nodes, so I'm curious how can I get ALL Nodes of TreeView control to iterate through them in foreach loop, any tricks, or I miss something?
View 6 Replies
Jul 11, 2010
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 Replies
May 18, 2010
I m using Teeview control for displaying Family tree structure.its having around 500 members.
now, i would like to add search functionality inside a tree,after finding appropriate node,a whole tree should be expanded from that node only.
any one have idea? how can it possible?
i found one property called "ExpandDepth" but still its not proper for my requirements.
View 2 Replies
Oct 13, 2010
I am Using Treeview Control in my application. My all menue detail is available in Db and i am getting it in dataset. I am binding my TreeviewControl with Dataset and it shows all nodes properly. I am able to done this at 2 levels. But i can't do this work at n-number of nodes. how i can do this for n-number of nodes using Dataset. Waiting for quich Response.
View 3 Replies
Dec 17, 2010
I have treeview with checkboxes.
[Code]....
when i check Treenode with Text='Velocity', all the three child nodes will get checked. I want only the count of child checked nodes. How can be it done.
View 2 Replies
May 13, 2010
I wanted to know if there are any Treeview controls with non-collapsible root nodes out there non-commercial preferably open source or if anyone can show me how to do it with the asp.net builtin control.
View 6 Replies
Mar 27, 2011
How can i change color of text from TreeView Nodes? When i click "EditNodes" there is no property which set colours,and in TreeView.Font also i don't see colour's property.
View 1 Replies
Jul 15, 2010
I'm coding an Webpage in VS.NET 2010[C#] that scans the Serial Number of Product into a Treeview in a Work Order > Box > Product hierarchy.
What I wanted to do was to use the following to Remove the ChildNodes:
//Use the GetEnumerator method to create an enumerator that contains the root node data.
IEnumerator nodeEnumerator = myTreeView.CheckedNodes.GetEnumerator();
// Iterate through the enumerator to display the root nodes.
while (nodeEnumerator.MoveNext())
{
/In here I would like to Remove the TreeNode
//MessageBox(((TreeNode)(nodeEnumerator.Current)).Text);
}
}
else
{
MessageBox("The TreeView control does not have any nodes.");
}
View 5 Replies
Mar 23, 2010
In my Treeview i have for all nodes checkboxes.
parent
child
leaf
leaf
leaf
parent
child
leaf
child
leaf
1. when i check leaf - i want to have checked child and parent too
2. when i check parent - i want to have checked child and leaf
---
3. on a save button i only want to save checked leaf to DB - if they are not checked delete from DB
View 1 Replies
Mar 26, 2010
This is so frustrating...that such a simple feature should not be included in the design of this control. I am using the cssfriendly adapters and the rendered code is shown below.
I thought I might be able to use the adapter's treeview JS function ExpandCollapse__AspNetTreeView(this) since this is what is called when I click on the node that causes it to expand/contract. But that did not work.
I have seen other code posted but it seemed to imply the treeview was a table not a ul.
Does anyone know how to simply expand or collapse all nodes from a link button without doing the postback. Of course the postback works but what a waste to have to postback to do such a simple action.
Why doesn' t MS consider the users and developers when creating these controls and tools? Stupid!
[code]....
View 2 Replies
Jan 30, 2011
I've created a custom implementation of SiteMapNode. I've attached it to Menu and it works ok. I've attached it to TreeView and it shows only nodes of one level. If I specify at SiteMapDataSource's ShowStartingNode==true, then I will see only root node and no expand buttons, if I specify ShowStartingNode==false, then I will see root's child nodes and no expand buttons also. What's wrong?
View 2 Replies
