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Server Control - Implement Postback

Posted By:      Posted Date: September 20, 2010    Points: 0   Category :ASP.Net

Hi all,

I am writing a server control and need to implement postback. It is a simple calendar control - it renders a textbox and a button using the override of RenderContents which pops up a asp:Calendar control in a new window (written separately to the control) which sets the value of the textbox with javascript.

I just want the TextBox to keep it's value on postback. I inherit from WebControl rather than from TextBox as I thought it would be nice to have a greater level of control but if inheriting from TextBox is better practice I'd be interested instead for guidance on how to add to the render rather than overwrite it altogether (to add a button).

I'm not in the habit of writing such general questions but what I haven't been able to find is some decent resources to put me on the right path.

I've been looking at http://msdn.microsoft.com/en-us/library/aa720415(v=VS.71).aspx but can't get it working (I think I've implemented everything they say in the article, other than that I am using a different render method, but it doesn't change anything).

Does anyone have any simple examples or resources they could point me at to help?

Thanks in advance,


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