Can't response.write an asp:Button control

[meckeard]

Hi,

I need to write out the following control using response.write:

<asp:Button id=&quot;btn1&quot; runat=&quot;Server&quot; />

Or an ImageButton. But it doesn't work. I can't see the control in the browser. And if I view --> source, I see the actual code:

<asp:Button id=&quot;btn1&quot; runat=&quot;Server&quot; />

My code is within the form tags. The only thing I can think of is that you cannot response.write a server control. Is this correct? And is there any way around this?

Thanks,
Mark

 

[Custom24]

Your conclusion is correct. You cannot response.write server controls, because these are picked up by asp.net during page processing and rendered to regular HTML elements to be sent to the client.

The way to do this is something like (in your page load event)

dim btn as new button
btn.ClientID = &quot;btn1&quot; 'only do this if you really need to - normally, it is better and easier to allow asp.net to assign the client id
Me.Controls.add btn

HTH

Mark

 

[BoulderBum]

In other words, controls need to be processed on the server, and all Response.Write does is add text to the client's page.

One useful bit of information I can contribute is that ASP.NET has PlaceHolder and Panel controls just for dynamically adding and/or grouping controls on your page.

The syntax would be similar to what you see in Custom's post: PlaceHolder.Controls.Add()