Ayende @ Rahien

Ayende Rahien commented on Why isn't there a simple way to trigger an UpdatePanel from client script?

Fri, 23 Feb 2007 07:08:47 GMT

@Scott, Yes, I know that, but in this case, I have several panels that contains information, the user is updating a record, which should cause all the other updates to be refreshed. I can't register a control as a post back trigger, because the refresh is depending on the input from the user. The use case for an update panel in this case is: "I want to update this particular section of the page with information." In this case, there isn't any way to do this short of faking a postback that the update panel will catch. This seems unnatural to me, because there isn't anything there that should be clicked.

Ayende Rahien commented on Why isn't there a simple way to trigger an UpdatePanel from client script?

Fri, 23 Feb 2007 07:08:04 GMT

@Justin, I need to make a decision on the client side if I would update the panel or not, it is not just clicking on a control and being done with it. I would hope to avoid using the private methods. I am already forced to do this for updating cascading drop down from code.

Justin-Josef Angel [MVP] commented on Why isn't there a simple way to trigger an UpdatePanel from client script?

Fri, 23 Feb 2007 05:31:03 GMT

You can use the server-side ScriptManager.RegisterAsyncPostBackControl so any control event will make the updatepanel refresh. http://ajax.asp.net/docs/mref/M_System_Web_UI_ScriptManager_RegisterAsyncPostBackControl_1_62fe17e7.aspx or (and you didn't here this from me) look at the Javascript code RegisterAsyncPostBackControl produces and use the Sys.WebForms.PageRequestManager.getInstance()._updateControls client-side method. Naturelly, you should never use javascript private methods. But you can :-)

scottgu commented on Why isn't there a simple way to trigger an UpdatePanel from client script?

Thu, 22 Feb 2007 23:08:51 GMT

UpdatePanels update when a control inside them does a post-back, or when a control that is associated with the updatepanel via a trigger does a postback. h So for example, if your button was inside the updatepanel, and you wanted to cause it to postback, you'd just write this JavaScript: $get('<%=MyButton.ClickId %>').click(); This will cause the button to fire, and the updatepanel it was in (or associated with via a trigger) would update. Thanks, Scott

Ayende Rahien commented on Why isn't there a simple way to trigger an UpdatePanel from client script?

Thu, 22 Feb 2007 21:43:03 GMT

@Justin, You pointed me at the SERVER reference, I need it from CLIENT. What I am looking for is something like this:

Justin-Josef Angel [MVP] commented on Why isn't there a simple way to trigger an UpdatePanel from client script?

Thu, 22 Feb 2007 19:44:11 GMT

Then you should probably use the UpdatePanel.Update client-side Method :) http://ajax.asp.net/docs/mref/M_System_Web_UI_UpdatePanel_Update.aspx