UpdatePanel Trigger registration for dynamic controls is IMPOSSIBLE!

Question

Hi to all i have a big problem with a dynamic Imagebutton... My scenario is the follow: i have a master page with scriptmanager and usercontrol containing a button. When i click buttonit open ModalPopUpExtender(also contained into the same usercontrol) that contains UpdatePanel child and also into the update panel there is a table that contains dynamic labels and ImageButtons! The update Panel is setted to Conditional so when i click an ImageButton it don't lose any table rows BUT this dynamic controls NOT REGISTERED to scriptmanager how AsyncPostBackTrigger so they didn't any postback!!! I tryed to register it after the form INIT but i fail: 1) my scriptManager is in the parent page and i don't to reach it to call registerasyncpostbackcontrol... how can i reach my parent control from my ascx? 2) if i understand all i don't register Trigger to my Update Panel AFTER THE FORM INIT....is it true?? (i read that i do it calling registerasyncpostbackcontrol is it true??) I write this code after the declaration of my dynamic ImageButton: AsyncPostBackTrigger ImgAddTrigger = new AsyncPostBackTrigger(); ImgAddTrigger.ControlID = ImgAdd.ID + cont.ToString(); ImgAddTrigger.EventName = Click; UpdatePanelTabellaPartner.Triggers.Add(ImgAddTrigger); UpdatePanelTabellaPartner.Update(); but it didn't work..so i think that i must call registerasyncpostbackcontrol I'm Sorry for my english that is not good... Thanks in advance for the answers! If anybody solve this problem i think that is the best!! I'm going crazy trying to solve this problem!!

Enrico Piccini · Answer

Hi! I tried to apply the change I suggested but does not work the same (the event not associated dynamic part) ... TI for a while I explain the situation from my master page I click a button that runs a query and according to that I create my dynamic controls in a asptable contained in an UpdatePanel and then I see my ModalPopUpExtender that shows me my asptable ... I've tried everything and now I am quite desperate) The tests I've done are: A) UpdatePanel.Updatemode = always ---> seem to make postback (though actually debugging using visual studio he does not enter into its associated function) but all dynamic controls disappear and can not be used! B) UpdatePanel.UpdateMode = conditional ---> Here dynamic controls are maintained. Also recorded RegisterAsyncPostBackControl clickable for each dynamic control in ScriptManager in my parent page it does not postback! (This only because the AsyncPostBackTrigger after the form init can not be recorded). The only way to make them do PostBack total record RegisterPostBackControl but even so I closed my ModalPopUpExtender. Even as the ListBox control that has AutoPostBack = true does not it! I then tried to create my dynamic control inside another UpdatePanel with UpdateMode = always and I realized that does not work the same! So not only is a problem of 'UpdateMode to me! 1) the problem can be caused by my ModalPopupExtender are created where the different update panel and dynamic controls? 2) Do not think of making a mistake to create my dynamic controls associate and record an event on the ScriptManager 3) we are sure that there is a way to run the dynamic controls are created after the Form_init? I knew RegisterAsyncPostBackControl the ScriptManager but not others ...can AsyncPostBackTrigger works well if declared after form_init and form_load?