How to Render controls within an UpdatePanel in a Custom Server Control


Im writting a CompositeControl that contains a few UpdatePanels (TabContainer with an UpdatePanel on each TabPanel to make Tab control panels load "on-demand").

I want to control the renderring of the controls within the UpdatePanel's ContentTemplateContainer.

How should I implement the render method of my CompositeControl?

Should I use a custom UpdatePanel (inherit from UpdatePanel and override the RenderContents method)?

is there a simpler solution? (because I need a different "render" for each tab panel....)

11/29/2007 2:33:24 PM 3498 articles. 0 followers. Follow

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I want to control the renderring of the controls within the UpdatePanel's ContentTemplateContainer.

Based on my understanding, If you want to render controls in the UpdatePanel, you have to make a custom updatePanel control which inherits from the updatePanel control.

You can create you child control in the CreateChildControls method, and then, add it to into the template you want.


Michael Jin.
Microsoft Online Community Support

Please remember to mark the replies as answers if they help and unmark them if they provide no help.
12/3/2007 4:30:30 AM


Thanks for your reply, can you do you any sample code for a customed UpdatePanel.

should I override the  CreateContentTemplateContainer()  method? (

I thought of another poosible solution for controling the render of controls within an UpdatePanel,

in CreateChildControls method i add to the UpdatePanel ContentTemplate  LiteralControls that holds Table elements,

Do you think its correct?

 if I choose to create a custom UpdatePanel I will need to create at least 5  different types of customed UpdatePanel as I need different controls and therefore

different  design foreach UpdatePanel. (ny CompositeControl contains a TabContainer so each TabPanel contains an UpdatePanel).

below is some code from CreateChildControls :

DealsUpdatePanel.ContentTemplateContainer.Controls.Add(new LiteralControl("<table border='1' class='StkInfo'>"));

DealsUpdatePanel.ContentTemplateContainer.Controls.Add(new LiteralControl("<tr>"));

DealsUpdatePanel.ContentTemplateContainer.Controls.Add(new LiteralControl("<td colspan=6 style='text-align:center' class='StkInfoHeaderR' >"));


new LiteralControl("</td>"));

DealsUpdatePanel.ContentTemplateContainer.Controls.Add(new LiteralControl("</tr>"));

DealsUpdatePanel.ContentTemplateContainer.Controls.Add(new LiteralControl("<tr>"));

DealsUpdatePanel.ContentTemplateContainer.Controls.Add(new LiteralControl("<td colspan='3' class='StkInfo'>"));




12/3/2007 12:22:55 PM

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