Fun with callbacks Part 4: what about postback events?

re: Fun with callbacks Part 4: what about postback events?

Bertrand Le Roy — Sun, 19 Jul 2009 04:49:41 GMT

@ram: you should read this post: weblogs.asp.net/.../truly-understanding-dynamic-controls-by-example.aspx and the one before it.

re: Fun with callbacks Part 4: what about postback events?

ram — Sun, 19 Jul 2009 04:05:07 GMT

hi, In my masterpage I am having a devexpress treelist and each time I click a node it will create a different user control in the content page based on the node I clicked during a callback of my focusednodechanged clientSideEvent of my treelist. When I click the treenode which I have already clicked before, I want my usercontrol to maintain its viewState. What is the best way to do it. I don't want to load all usercontrols on page load. Thanks, Ram.

re: Fun with callbacks Part 4: what about postback events?

mohammad Javed — Sat, 21 Jun 2008 11:46:37 GMT

hi i am trainee programmer in comm-it india(p) Ltd at new Delhi-110017.your articles is very helpfullto me about postback event.

re: Fun with callbacks Part 4: what about postback events?

Bertrand Le Roy — Fri, 02 Nov 2007 17:28:23 GMT

I'm pretty sure Safari should work. Can you contact me through the contact form and send me a simple repro?

re: Fun with callbacks Part 4: what about postback events?

Muthukumar — Fri, 02 Nov 2007 06:17:27 GMT

I have a question. we are using client call back in our application. its calling serverside event in mozilla and ie but safari does not call server side event. can you help me how to fix this

re: Fun with callbacks Part 4: what about postback events?

Bertrand Le Roy — Tue, 14 Aug 2007 05:22:14 GMT

Snt: I don't know where you got this idea. There is no reason why postbacks wouldn't work normally even "when we have a client callback", although I'm not sure what you mean by that.

re: Fun with callbacks Part 4: what about postback events?

Snt — Mon, 13 Aug 2007 18:47:04 GMT

I have a question in the article its said that when we have a client call back the click event of a normal button with postback wont work... how can i fixed that problem i want to have some objects with client call back and some others with postbacks

re: Fun with callbacks Part 4: what about postback events?

Bertrand Le Roy — Thu, 19 Jul 2007 16:21:08 GMT

Jon: it's hard to say from just this description and without seeing the code. Are you handling the selected node changed event from the treeview to change what's in the table?

re: Fun with callbacks Part 4: what about postback events?

Jon — Thu, 19 Jul 2007 14:06:45 GMT

Ok, riddle me this if you please. I am building an ASP.NET (VB) site using Master Pages. The Masterpage is simply to have a common header. In the content for the page in question, I have a two column table. The left column has a treeview with a list of objects. Each object has properties...each with potentially a different value. The right column is a dynamically created table that in each row has either a label, dropdownlist, or a checkbox. My postback code rebuilds this table and populates the values appropriate to the object selected in the treeview.

My problem is that if I click from one object to another on the treeview, data is not updated on the table...even though I show in a logger (listbox) that I'm attempting to set the values.

I toyed with the loadcomplete routine and changes made to the objects in the right column stick. But the function that "rebuilds" the table during postback does not.

Your help would be greatly appreciated.

Jon

re: Fun with callbacks Part 4: what about postback events?

Bertrand Le Roy — Wed, 11 Apr 2007 05:31:50 GMT

David: It's hard to debug your code without seeing it but apparently you're not recreating the controls in their current state on each postback, or maybe you're recreating the controls but with the wrong ids. There are many things that can go wrong, but I'd start by reading this:

http://weblogs.asp.net/infinitiesloop/archive/2006/08/25/TRULY-Understanding-Dynamic-Controls-_2800_Part-1_2900_.aspx