How do I force full post-back from a button within an UpdatePanel?

Question

How do I force full post-back from a button within an UpdatePanel?

Solution 1

You can use the Triggers property of the UpdatePanel to register actions that trigger a full postback.

Add a PostBackTrigger object to that property, containig the ControlID of the control which needs to trigger a full postback.

<asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" runat="server">
    <ContentTemplate>
        ...
    </ContentTemplate>
    <Triggers>
        <asp:PostBackTrigger ControlID="myFullPostBackControlID" />
    </Triggers>
</asp:UpdatePanel>

Solution 2

Just adding this because nobody else has. It is possible to do this in code-behind in one line of code without any of the above methods. Just put this in page_load:

Visual Basic

ScriptManager.GetCurrent(Me).RegisterPostBackControl(myButtonID)

C#

ScriptManager.GetCurrent(this).RegisterPostBackControl(myButtonID);

Solution 3

From here:

Use the PostBackTrigger control to enable controls inside an UpdatePanel to cause a postback instead of performing an asynchronous postback.

 <Triggers>
    <asp:PostBackTrigger ControlID="controlID" />
 </Triggers>

Comments

[OverMars]

Very nice, after hours of searching, finally a solution that works. The issue was all my controls (update panel and button) were being created in code behind so a postbacktrigger could not be set. Thanks!

[EvilDr]

You should be able to. When the control is created you can use AddHandler to create the trigger to your responding Subroutine

[OverMars]

Absolutely right, its so simple and right there I'm almost embarrassed it never occurred to me. Very nice though..

[tsilb]

I have an Infragistics UltraWebGrid with a column that consists of buttons. I had a problem where clicking on the buttons would fire their event handlers, which in turn refreshes the grid, but the grid would not actually refresh visibly until the second click. Putting the buttons in an UpdatePanel and adding these triggers solved the problem.

[Fandango68]

What is 'Me'? Does not exist in current context error

[EvilDr]

Me is visual basic for the page. I think in C# you can use this or page

[Fandango68]

This only works with ONE updatepanel and ONE trigger button. What if the updatepanel is inside a Gridview row, where each updatepanel and trigger button has a unique ClientID?

[Fandango68]

Hmm yeah but won't work if inside that UpdatePanel you have a GridView with Page numbers for example. Change to a new page and the triggers no longer work.

[EvilDr]

In the GridView.RowCreated method, apply exactly the same logic to achieve the same

[jmsandy]

Thanks, you helped me in another problem with AjaxToolKit.HtmlEditor within popup.