473,778 Members | 1,912 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

rendering Button inside Render() event, makes it loose its click event handler association

I generate a button link control in following Manner.

Button b = new Button();
b.Click = MyEventHandler( ...);

If i add this button to current control with:
this.Controls.A dd( b );
it will render, and its clicked event will be triggered properly.
Unfortunately I do not have alot of control over where the button shows
up.

So I try to render it inside of protected override Render(...) event
with:
b.RenderControl ( writer );

Now the button shows up where I want it to, but its click event never
triggers anymore.

Any ideas why rendering it manually cancels out its click event
association?

Nov 19 '05 #1
1 3227
"sonic" <sq**********@h otmail.com> wrote in message
news:11******** **************@ z14g2000cwz.goo glegroups.com.. .
I generate a button link control in following Manner.

Button b = new Button();
b.Click = MyEventHandler( ...);

If i add this button to current control with:
this.Controls.A dd( b );
it will render, and its clicked event will be triggered properly.
Unfortunately I do not have alot of control over where the button shows
up.

So I try to render it inside of protected override Render(...) event
with:
b.RenderControl ( writer );

Now the button shows up where I want it to, but its click event never
triggers anymore.

Any ideas why rendering it manually cancels out its click event
association?


Because it's not part of the control hierarchy. It's not because you
rendered it manually, it's because you didn't add it to the Controls
collection.

Note that you can control where such a child control renders by using tables
for layout and adding the child control to the appropriate TableCell.

Also, a control in the Controls collection renders only when you call
base.Render in your Render method. If you can do your rendering without
calling base.Render, then you can have a control in the Controls collection
and at the same time you can determine where it will render within the HTML:

John Saunders
Nov 19 '05 #2

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

Similar topics

4
14485
by: athlonman | last post by:
Hi all!! II'm trying to set the Text of a TextBox in "Form1" when I click a Button in a UserControl. My code is: : public class Form1 : System.Windows.Forms.Form { public System.Windows.Forms.TextBox textBox1; private WindowsApplication1.UserControl1 userControl11;
6
2855
by: Michael Johnson Jr. | last post by:
I am trying to handle a button click event, which updates a web control table with data. The button is dynamically created in the table itself. When I call updateTable() in the Page_Load the new data from the button is not available at this time as to allow the table to properly update. So basically, I need to call UpdateTable() twice, once from page load and once from button. This causes problems with my application, and I was trying...
0
1818
by: Novice | last post by:
Hey all, I've already posted this question and two posters offered suggestions and they worked - but now I would like to know why - and if possible the answer to a second question. Here is my problem: I am trying to write a custom WebControl - at some point this WebControl will output a bunch of controls into several Panel objects. But I just recently got my WebControl to output a single button and attach an event handler to that...
3
1933
by: Peter Vermilye | last post by:
How can I dynamically create buttons and wire them to an event handler? I have seen how I can add buttons to an event handler that are pre-created as part of the codebehind using AddHandler, but I can't use AddHandler with a button that is created locally, nor can I seem to create multiple button objects and add them to the page using a button object that exists outside the procedure I am using.... thus: Protected WithEvents...
7
2578
by: MgGuigg | last post by:
Hello all, This is my first time posting a question to this forum, so here is hoping I am following protocol. I am scraping the rust off my old Basic programming skills, and have just recently upgraded to VB.NET, and I have a lot of catching up to do. That being said, I have come a long way in a short while, however, I am stumped at the moment. I have read through days of posts, but have not been able to address my specific question, so...
11
4248
by: bill | last post by:
I dynamically create buttons and associate them with an event using AddHandler. I want all the button events to fire at one time, when the page is posted, instead of when each button is clicked. How I stop the buttons from posting back when they are clicked? Thanks
5
2344
by: paul.hester | last post by:
Hi all, I have a custom control with an overridden Render method. Inside this method I'm rendering each control in its collection using their RenderControl method. However, I'm running into a problem in this scenario: <myprefix:mycontrol runat="server"> <%= SomeVariable %> </myprefix:mycontrol>
2
3298
by: polocar | last post by:
Hi, suppose that you have a C# form with two buttons, that are the classical "btnOk" and "btnCancel" (besides them, of course in the form there can be many other controls). When the user clicks on btnOk, the program makes some confirm operations and closes the form. When the user clicks on btnCancel, the program makes some cancel operations and closes the form. My problem is that, when the user clicks on the "X" button of the form...
17
9681
by: Eric | last post by:
I'm new to JavaScript and I wrote this code to play with. Oddly, if I enter text in a box and then press the button, I only get the onChange event for the text box and not the button's onclick event. But if I press the button without entering text first, the button click event does work. What's up? <html> <body> <h3>Events on Buttons and Text Boxes</h3>
0
9629
marktang
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...
0
9470
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,...
0
10298
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
9923
tracyyun
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...
1
7475
isladogs
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...
0
6723
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
5370
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
1
4033
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
2
3627
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

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.