Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

New page controls added are not visible in code-behind form some reason...

Posted on 2010-11-13
7
618 Views
Last Modified: 2012-08-13
For some reason, all of a sudden any control I add to the HTML side with the "SERVER" identification doesn't show up in the code behind... I am not sure what happened since the controls that exist already show up just fine but anything new i add does not... I.E. i add a variable like:
<asp:DropDownList runat="server" id="ddlNewElement">
but on the c# side, ddlNewElement is not a valid element?
0
Comment
Question by:dxproz232
7 Comments
 
LVL 5

Expert Comment

by:roxviper
ID: 34127477
do you have a web project or a website?
0
 
LVL 6

Expert Comment

by:AlfredRobot
ID: 34127483
I have this question before, very strange. Basically, that time i delete all the "unidentified control" from aspx page, and restart the vs2010. Then I drag the controls I want to add from toolbox to the aspx page, then it suddenly works. I don't know the reason, hope this will help.
Good luck.
0
 
LVL 16

Expert Comment

by:BurnieP
ID: 34127564
Make sure that you didn't break your HTML tags.  A malformed HTML tag can be the reason VS is not able to recognize any new controls you add.   I had your problem several times and each time it was because I had an <asp: ...  without the end </asp:...

I would check that first.

0
Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

 
LVL 12

Accepted Solution

by:
jagssidurala earned 500 total points
ID: 34128301
I think you are using VS 2008. if we used this make sure that the control should also present in .designer.cs file. if do not find this in designer.cs we get the error which you mentioned.

to avoid this problem
Cut the control in .aspx and save the file then paste the same. it should work as per my knowlegde.........
0
 

Author Closing Comment

by:dxproz232
ID: 34129388
Thanks everyone but nothing worked until I went into the code-behind and manually added the entry into the designer.cs file. I don't drag elements (I write the HTML manually) so that maybe why it happens to me more then usual? Anyway thanks for the solution...
0
 
LVL 16

Expert Comment

by:BurnieP
ID: 34129422
You should never have to directly modify the designer.cs file.

I am curious to see your .aspx file.  I might be able to find what tag is missing.

Now, you are putting yourself into a corner because you will have to modify the designer.cs file for every control you add in your page.  Normally, everytime you save your page it is silently modifying your designer.cs file with control it sees on it.  Your problem is it doesn't save your controls in the designer.cs file because it is not recognizing your new controls, because of a malformed tag.

I am even curious to see, if you save back your .aspx file if it will remove your modification to the designer.cs file.

That is not the way to go, sorry.  I don't want people google-ing and find that solution as a valuable solution, because it is not.
0
 

Author Comment

by:dxproz232
ID: 34130553
Well the funny thing is once i added the missing entry in the designer.cs file, anything i added after that worked properly...
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Sent email using Shared Mailbox from outlook in C# 5 50
jquery datatables, asp.net MVC 9 51
ASP.NET Content Page 3 28
vb.net convert long time to mm:ss 23 13
Today is the age of broadband.  More and more people are going this route determined to experience the web and it’s multitude of services as quickly and painlessly as possible. Coupled with the move to broadband, people are experiencing the web via …
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

860 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question