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Zone: > NEWSGROUP > Asp.Net Forum > general_asp.net.master_pages_themes_and_navigation_controls Tags:
Item Type: NewsGroup Date Entered: 4/27/2007 8:18:03 PM Date Modified: Subscribers: 0 Subscribe Alert
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owen912
Asp.Net User
Dynamically removing child controls of a placeholder.4/27/2007 8:18:03 PM

0/0

I need help with placeholders.

I am working on a form that's dynamically generating from and .ascx file.  The form is getting information on user's vehicles for an insurance quote.  So for a quote on three four cars, the .ascx file is loaded fours times in the placeholder control.  I am trying to add a delete function to the form. So when the user want's to delete vehicle one, I do a ph.Controls.RemoveAt(0) on the postback. 

The problem is when I delete vehicle one, the next vehicle repeat three times.

Example:  I start out getting a quote on a Thunderbird, Mustang, Fairlane and Model T.  I click a button to delete the Thunderbird and when the page loads after the postback, I have three Mustangs.

Can someone point me to a problem (ViewState, etc.)?

 
Zhao Ji Ma - MS
Asp.Net User
Re: Dynamically removing child controls of a placeholder.5/3/2007 11:43:27 AM

0/0

Hi owen912,

Did you mean the second vehicle was displayed three time, however the third and fourth were not displayed.

Zhao Ji Ma
Sincerely,
Microsoft Online Community Support

?Please remember to click ?Mark as Answer? on the post that helps you, and to click ?Unmark as Answer? if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ?
owen912
Asp.Net User
Re: Dynamically removing child controls of a placeholder.5/3/2007 10:36:20 PM

0/0

The first vehicle after the one deleted is then repeated over however many are left.  It's kind of ugly, but we've solved the issue by adding logic that remembers what control IDs have been used.

So if you start off with four vehicles the control's ID attributes are rendered something like this: ctl1_txtModel, vctl2_txtModel,ctl3_txtModel,ctl4_txtModel.  Rather than re-numbering, we're forcing the screen to retain the original IDs.  So after deleting vehicle two, the remaining controls are entered like this: ctl1_txtModel, ctl3_txtModel,ctl4_txtModel.  This appears to have resolved the problem.

I am making a mental not to myself not to use the placefolder control in the future.

 
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