Tips and Tricks: ASP.NET AJAX 1.0 and User Controls
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by Bilal Haidar
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Requirements

Before you start reading on with this article, make sure you have the following applications and add-ons installed on your machine.

·         Visual Studio Professional 2005

·         Microsoft SQL Server Standard Edition

·         Microsoft ASP.NET 2.0 AJAX Extensions 1.0

·         Internet Information System 5.0, 6.0, 7.0

The above were used to develop the sample downloadable application. However, you can also use the Visual Web Developer 2005 Express and Microsoft SQL Server 2005 Express Editions to run the example that we will be developing in this article. To download both you can visit the following URLs.

Visual Web Developer 2005 Express Edition

Microsoft SQL Server 2005 Express Edition

Microsoft ASP.NET 2.0 AJAX Extensions 1.0


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User Comments

Title: very nice   
Name: Serif Emek
Date: 2009-07-28 5:32:09 PM
Comment:
That is just what I was looking for.
Thanks
Title: Re: Vbman   
Name: Bilal Haidar [MVP]
Date: 2008-03-27 10:38:17 AM
Comment:
Hello,
Try to show me the code behind of the usercontrol and how you are setting it on the page!

Thanks
Title: Object reference not set to an instance of an object.   
Name: Vbman
Date: 2008-03-27 10:05:40 AM
Comment:
Great Article!
I have the update panel on the page and the user controls inside the update panel.
I create a property inside the usercontrol that accesses a control, Say the gridviews Tooltip or Pagesize or ...
When I try to set the property on page declaratively I get an error:
Object reference not set to an instance of an object.

I've seen this problem posted in other places but no solution.
Have you run into this and do you have a work around.

Thanks!
Title: Re:   
Name: Bilal Haidar
Date: 2007-10-30 10:43:12 AM
Comment:
Hello,
You can use this converter:
http://bhaidar.net/cs/archive/2007/04/18/telerik-c-vb-net-converter.aspx

Regards
Title: VB.Net   
Name: Jo
Date: 2007-10-30 5:51:05 AM
Comment:
Article is so good. If it is available in vb.net also it will be helpful for the beginners.
Title: Well explained   
Name: Jose
Date: 2007-08-09 4:44:16 AM
Comment:
As usual, you did a great job!

I loved the fact that you showed all the possible combinations you can have with a gridview user control and AJAX. And the sample works really fine!

Jose
Title: Great   
Name: Mark W
Date: 2007-06-25 9:24:07 PM
Comment:
Very well summarized, thanks. I agree, good use of events and generics.

Also, there's a small typo in Listing 5: OrderList UC's UpdatePanel ID should be 'AjaxPanel'.
Title: Nice one   
Name: Wesley Bakker
Date: 2007-06-24 4:32:51 AM
Comment:
Nice article. Decent use of events, AJAX, generics, datasourcecontrols etc. etc.

Cheers,
Wes






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