473,887 Members | 2,280 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

TreeView 2.0

Is there a way that I can have a client side event like
oncontextmenu=" showfunction(); " on each node?


Aug 24 '06 #1
1 3658
Hi Victor,

As for the ASP.NET 2.0 Treeview, it is a new control which targeting
multiple web browsers unlike the original IE WebControl TreeView.
Therefore, it may lack many client-side rich behaviors like the IE
webcontrol TreeView.

Currently, for the ASP.NET 2.0 TreeView, we can not add client-side scritp
handler for individual TreeNode(the treenode is not a child control, but a
normal class). What we can do is add a client-side handler for the TreeView
control. e.g.

=============== ===
<asp:TreeView ID="TreeView1" runat="server"
oncontextmenu=" javascript:tree view_oncontextm enu();return false;" >


protected void Page_Load(objec t sender, EventArgs e)

TreeView1.Attri butes["oncontextm enu"]="javascript:tr eeview_oncontex tmenu();r
eturn false;";
=============== ====
Then, this event will be triggered when you right click on any part of the
TreeView(the same for any other client events like "onclick" .....). If you
want to trigger the exact individual TreeNode which trigger the event, we
need to add some additional script code to detect whether the event is
raised by a TreeNode(each treenode by default is rendered as an html link
<ain the page's output). here is a test script function which detect
which TreeNode is right clicked and display its "internal id" and
"TreeNodeNa me":

=============== ==========
<script language="javas cript">
function treeview_oncont extmenu()
var obj = window.event.sr cElement;

if(obj.tagName == "A")
alert("id: " + obj.id + ", name: " + obj.innerHTML);

=============== =========

I get this idea from the following article, I think it will be helpful to

#ASP.NET 2.0 Treeview Checkboxes - Check All - Javascript

BTW, due to the limitation of the current implementation of ASP.NET
TreeView control, we could only get the TreeNode's id or name information,
but can not manipulate it like server-side code.

Hope this helps.

Steven Cheng

Microsoft MSDN Online Support Lead

This posting is provided "AS IS" with no warranties, and confers no rights.

Aug 25 '06 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

by: lauren quantrell | last post by:
So many postings on not to use the treeview control, but nothing recently. Is it safe to swim there yet with Access 2000-Access 2003?
by: SoKool | last post by:
Can anyone point me to a site where I can get a free treeview control to use in ASP .NET or any tutorial that can help me build my own treeview control. I intend to use a treeview to generate a dynamic menu by collating data from a Sql Server Table. Many thanks.
by: paradox | last post by:
I want to have a TreeView that shows an image on some items, but not all. Basically, if a certain condition is true, a caution icon is placed next to the treeview item. The problem is that, by adding a ImageList to the TreeView, the ImageIndex property of the items in the TreeView defaults to 0. I could put a blank icon in the ImageList and make it the 0 index image, however, this makes an ugly space. Would I have to create my own...
by: Peter | last post by:
Hello, We are inserting a side menu to our application using a class that is writing HTML on all our pages. This is a part of the code as an example: writer.Write(" <table WIDTH=""100%"" BORDER=""0"" CELLSPACING=""0"" CELLPADDING=""0"" ID=""Table1""> " & vbNewLine) writer.Write(" <tr>" & vbNewLine) writer.Write(" <td>" & vbNewLine)
by: L.M | last post by:
Hello, I knew how to use the treeview under VB6. After migrating to .NET, well, I'm lost. I try to add a new node, either to the same level or as a child to a selected node in the treeview. However, either it only add it to the root level or it only add it on level below, doesn't matter what I select. And in some case, I just get an exception.
by: Mr.D | last post by:
How do I save/load the contents of a Treeview to a file? I have found several good examples written i VB6, but not a single one for VB.NET. Please help. ---- Tim
by: christof | last post by:
I've got a really easy problem, please help me: There are two pages in one I'm creating a TreeView like that: TreeView dbTree = new TreeView(); TreeNode dbTreeRoot = new TreeNode("Root"); dbTree.Nodes.Add(dbTreeRoot); .. ..
by: Tymbow | last post by:
I'm building a web application that is analogous to the Windows XP file explorer in function. The left column contains a TreeView, and the right column a DataGrid populated by selecting TreeView nodes. The TreeView populates dynamically as there are a significant number of nodes. The DataGrid displays both the items and the nodes from the TreeView. Using the explorer analogy this means the TreeView shows folders, and the DataGrid folders...
by: kvicky | last post by:
I am trying to load child nodes to a TreeNode in a TreeView in a ASP.net web application. The Treeview with parent nodes are loaded on a Page_load while doing if( ! ISPostback ) and then in the Treeview event I am dynamically trying to load the child nodes to the exisisting TreeView. The problem is since the TreeView is being loaded on not a Postback, I am unable to refer to any node in the TreeView event. Can anybody tell me how to...
by: Matt MacDonald | last post by:
Hi All, I have a form that displays hierarchical categories in a treeview. Ok so far so good. What I was to do is have users be able to select a node in the treeview as part of filling out the form. I only want to allow single selection, so using checkboxes is out of the question. It works as is, but it makes the form very cumbersome if every time that a user selects a node, the whole page has to reload. Is there a way to have a node...
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.