Web Forms :: How To Render Control Dynamically Based On Configuration

Mar 25, 2010

I have come across a requirement to dynamically show or hide asp.net web controls , html server controls. I want to do this through a configuration XML (as it would be easier to config). So each page /aspx will have a configuration xml.

Would it be possible to create a control (may be a custom control , to which i can attach the xml file). The control (lets says - call it sequencer) should decide which control should be ordered in which order and if the control has to be shown or not. Ideally this sequencer control should use the page events and take decision on rendering the child controls.

Some thing like this

aspx -

<Sequencer XmlPath=".." Id="S1" Runat="server">
<Textbox id="t1" runat="server" />
<Textbox id="t2" runat="server" />
<Textbox id="t3" runat="server" />
</Sequencer>

This is hiw xml config may look like -

<Sequencer Id="S1">
<control id="t1" sequence="2" show="true" />
<control id="t2" sequence="1" show="true" />
<control id="t3" sequence="3" show="false" />
</Sequencer>

So in this case t2 should be rendered first then t1. The control id in the xml and the aspx has to be same.

t3 should not be rendered at all on the screen.

Which page load event should I use.

how I can create this kind of a custom control that does the above for me.

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