Comments on: Master Pages, AJAX, and Javascript

By: David

David — Mon, 25 Jan 2010 17:00:20 +0000

In the following scenario with your TemplateMaster "fix" the "BtnLogin_Click" event does NOT get fired and EmailAddress.Text always equals String.Empty on PostBack. MasterPage: ContentPage:

By: Cam

Cam — Fri, 20 Nov 2009 17:10:15 +0000

You might consider explicitly setting the ID’s on those checkboxes. If you did that I think things would work as desired even with the AssignIDs call. However, removing the AssignIDs call should be fine as long as you don’t turn on Trace.

By: Yauhen

Yauhen — Fri, 20 Nov 2009 12:31:10 +0000

Good work. I have a lot of pages from old project copy pasted without master pages. When I have tried to extract common part of course all failed. Then I hae added you solution. Mostly works good. But some heavy control (based on datagrid) that have dynamic check box colums have problems. Generated Client Ids in browser differs from values that check boxes have on server side. So on post back checked values set incorrectly (because check boxes try to extract it from view state). May be thes check boxes are created in incorrect place (I have no time to investigate because as I asiad this control is very heavy with a lot of code). I have found that removing AssignIDs call fix this problem..

By: Lewis

Lewis — Wed, 05 Aug 2009 19:02:28 +0000

Somehow VS messed up everything. I recreate the file and everything is fine now. However I ran into two new problems. One is that button event won’t be fired if the button is on the master page. The second one is that a dropdownlist with 50 items will always return selectedindex=1 somehow in my projects. I have 3 other dropdownlist without any problem. I have to change the type to htmlselect in order for it to work right. It is a great control. Thanks.

By: Cam

Cam — Sat, 18 Jul 2009 03:06:08 +0000

Are you using TemplateMaster directly without deriving your own class from it? Also a typo could easily cause that problem.

By: Lewis

Lewis — Fri, 17 Jul 2009 17:22:07 +0000

Do you know why I get “is not allowed here because it does not extend class ‘System.Web.UI.MasterPage’.” when I try to use the derived MasterPage? I am using VS2008+sp1.

Thanks,
Lewis

By: Cam

Cam — Thu, 21 May 2009 05:18:48 +0000

Thanks Ritchie, I finally got the code updated using this great code formatter: http://www.manoli.net/csharpformat/

The code now works with very late dynamic rendering with .Net tracing enabled. However, under certain circumstances I still get tracing errors when pageOutput is enabled. Again, I suspect that this will only happen with dynamic rendering very late in the page life-cycle.

Cam

By: Ritchie Annand

Ritchie Annand — Mon, 11 May 2009 16:58:17 +0000

We do generate some controls dynamically, but definitely early on in the process. If it still behaves well assigning the IDs later in the process, then props to you

By: Cam

Cam — Thu, 07 May 2009 20:57:07 +0000

Sorry for the delay. I’ve got it working in production now on a couple of sites. Your solution was definitely in the right direction, but I found that for our platform I needed to modify it so that the id’s are assigned later in the page life-cycle. Our platform does a lot of dynamic generation of controls so that’s probably why I found I needed to do that and you didn’t.

I’ll try to post the updated source today or tomorrow.

By: Ritchie Annand

Ritchie Annand — Mon, 04 May 2009 20:04:54 +0000

Glad to hear it could apply to a .NET 2.0 issue as well.

Let me know if the changes work, or if you find an even better way to accomplish it than my stubbly hack.

Thanks, Cam, and thanks for the trick in the first place