Web Forms :: Use Treeview.CheckedNodes.GetEnumerator To Remove Nodes?

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.");
}

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Web Forms :: TreeView CheckedNodes Collection Empty On Button Click And Postback To Server

Mar 22, 2010

I have an ASP .Net TreeView control that I am dynamically adding tree nodes to from my codebehind on Page_PreRender. The TreeView is populated nicely and the appropriate checkboxes are where they are expected to be. For each of these nodes the SelectAction=TreeNodeSelectAction.None. However, when accessing the TreeView CheckedNodes() collection in my codebehind after selecting a few nodes (checkboxes are selected) and clicking a submit button to post back to the server in the button click event, my CheckedNodes.count() = 0. I can not figure out why my CheckedNodes collection in the codebehind does not contain the nodes that I have checked from the GUI.

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Web Forms :: Clear Out The treeview Nodes Before Adding New Nodes From Different Date?

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?

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Web Forms :: Right Align The Nodes In A Treeview?

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.

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Web Forms :: How To Show Treeview Nodes

Nov 17, 2009

can i show tree nodes as mentioned below.

a
f g
r t b

the diagram saying that from node a to f and g from node f to r and t from g to b can i do this if yes can u tell how. actualy now i am doing one to one but i want one to many.

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Web Forms :: Select Several Nodes In TreeView

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) ?

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Web Forms :: How To Get All The Nodes Of TreeView Control

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?

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Web Forms :: Enable And Disable Treeview Nodes?

Apr 9, 2008

"how to enable and disable the treeview child nodes in c#.net" in which event i've to write?

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Web Forms :: TreeView - What's The Values For The Id's For The Previous Nodes

Aug 31, 2006

I am trying to use a tree which i populate from a database. So after few populations on demand i come to a node that is lets say depth 4.Something like:

Node2
Node3
Node4

When i click on Node4 i would like to be fired off to a page that will take input.But the trick is that the input depends on how deep in the tree am i.I need to know what the values for the id's for the previous nodes were. Any way to remember them? Here is a scenario.Let sayi have : Block

Node1
Building
Room
Table

where each of those names will be an id.So when i click on table i would be ideally fired off to an page with input area.When i enter the values and send off to the database i need to record them for that table which is in the specific room,in the specific building and specific block.So i need to remember the ids of all the nodes above.

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Web Forms :: How To Expand And Collapsed Treeview Nodes

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.

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Web Forms :: Add N-number Of Nodes In Treeview Using DataSet?

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.

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Web Forms :: Loop Through The Sitemap Nodes In A Treeview?

Oct 12, 2009

is there a way to loop thru the sitemap nodes in a treeview and turn some off from being viewed.

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Web Forms :: Adding Nodes To A Treeview Control?

Sep 26, 2009

I have a treeview control and at run time I declare a tree node and want to add that to the treeview control. I can do this without any issues.

My requirment is to search in the tree view for the node and add it if not found.

ex: I already have a the following in my treeview control:

MainFolder -> Sub1 -> Sub2

My node has the following.

MainFolder -> Sub3 -> Sub12

I want to add my node so that I get the following result.

Mainfolder -> sub1 -> sub2
Mainfolder -> Sub3-> Sub12

I tried many different methods, but nothing worked. Following code was the closest I could use. This works if the nodes are not found, but if the node already exists, it creates a duplicate node. Also I must do this run time. Cannot get data from the database.

Function FindAndAddNode(ByVal nd As TreeNode, ByVal ndNew As TreeNode) As Boolean
For i As Integer = 0 To nd.ChildNodes.Count
For j As Integer = 0 To ndNew.ChildNodes.Count
If nd.Text = ndNew.Text Then

[Code]....

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Web Forms :: .Net 2.0 Treeview Nodes Not Expanding Or Selecting?

Oct 1, 2009

I am adding nodes to a TreeView control in Page Load as follows (code abbreviated):

foreach (WorkFlowTask workFlowTask
in WorkFlowTasks)
{[code]...

The result is the TreeView control renders all nodes expanded and the selected node is not highlighted in yellow (until I click on a node).When I check tvwWorkFlow.SelectedNode after the Treeview control is built, it is null. The Selected property of every node in the TreeView, is null.

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Web Forms :: Deleting Nodes From Treeview Control?

Sep 25, 2009

Does any one know how to traverse through a treeviewlist and delete a node when there are no child nodes. I tried many methods, but was not successful in doing it.

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Web Forms :: Tooltips In Treeview Nodes Mouse Hovering?

Sep 4, 2009

Is it possible to show tooltip text at node ContractNO, want to show Contractname as tooltip.

[Code]....

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Web Forms :: How To Display First Level Nodes Of Sitemap In Treeview

Nov 26, 2009

I have a sitemap file and mater page and content pages.

My sitemap file have two layers under the Home, Products and Services. We have subtrees under Products and Services, resp.. Now I only want display the root Home, and the first level nodes Products and Services.

How to do it?

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Web Forms :: How To Display 1st Level Of Nodes Of Sitemap To Treeview

Nov 26, 2009

For example, I have web.sitemap file as

[Code]....

By default, the all nodes in sitemap are displayed in the the TreeView control.

I want to display only the first level of nodes, Products and Services (may including root Home). How can I do it?

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Web Forms :: Get Count Of Checked Child Nodes In Treeview?

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.

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Web Forms :: Treeview Control With Non-collapsible Root Nodes?

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.

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Web Forms :: Change Color Of Text From TreeView Nodes?

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.

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Web Forms :: TreeView - Load/Save To DB - Checked/unchecked Nodes

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

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Web Forms :: Treeview Expand/collapse All Nodes Client Side?

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]....

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Web Forms :: Collapse Selected Nodes In Treeview Where Populateondemand=true Is Set?

Nov 18, 2009

i have a treeview where populateondemand=true. From treeview i can open small window to create child node or edit node value by clicking node text.

Now my problem is when i return from child page to my parent page(where tree exist) i could not able to expand selected node because of populateondemand=true property, all nodes are not populating at the time of load.

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Forms Data Controls :: TreeView Doesn't Display All Nodes?

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?

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Web Forms :: Treeview Nodes Shift Left When They Are Prefilled As Checked?

Feb 18, 2009

I was wondering if this is a known bug or there is something wrong with the way I databind the treeview.

I have a dynamically populating treeview when user expands the node. So basically I get top nodes, create them, then once user expands the node I create the rest. Everything looks fine as long as the checkboxes are not prefilled. If I have a dataset with the items which need to be selected and I check my expending nodes against that dataset. Once some nodes are selected, the level of those nodes shifts left at the lavel of its parent. I first thought that there is a problem of the width of the div I placed the treeview into but that does not matter. Even if it has enough space it still shifts left. I checked the tree and the nodes and paths are correct. Is this some sort of a bug or I'm missing something here?

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Web Forms :: Treeview Child Nodes Are Not Showing In Dotnetnuke Website?

Jun 29, 2010

i added one treeview control in aspx page .All parent and child nodes are working perfect in this aspx page.

Now this same code i pasted in an ascx page and that ascx page i called through DNN website.That time parent node display is coming properly,but when i click on the parent node child nodes are not showing up?

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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?

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Web Forms :: Treeview - Selected Nodes Via Javascript, And Automatically Scrollable Div's?

Nov 25, 2009

I am having a couple of issues with my ASP.NET Treeview.My tree is populated dynamically. When I create each parent/child note I assign the property

childNode.NavigateUrl = "Javascript:nodeClicked('" + childNodeAssetCode + "')";

When a node is clicked, I assign the clicked value into a textbox on my main form via javascript function. I would like to highlight the node that has been selected, but the 'SelectedNodeStyle-BackColor' property does not take effect. how I could assign this? Maybe via Javascript?

2. I have a search TextBox and Button for my tree that will build and locate the node the user has entered.

The problem I have with this is the tree is located in a scrollable Div. If the node that the user has entered is say for example; 20 nodes down, and 5 nodes in, the user will have to scroll the div both down and across to locate the node. to automatically scroll the div, so the found node will be at the top? Much like how windows explorer tree works.

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Web Forms :: Treeview - Auto Select / Deselect All Sub Nodes - When Parent Clicked

Sep 23, 2008

If you have a treeview like below:

+ Parent Node
+child 1
+child 2
+child N

How do you auto select/deselect all nodes including the parent node?

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