Custom Server Controls :: Create C# Controls On Server Side For Posted Data That Had No Runat=server

HOWTO create ASP.NET C# controls on server side for posted data that had no runat=server on the client.

I have processes needing to post files to a ASP.NET application. These processes must post without runat=server as such:

<form ~~~~ to some ASP.NET/C#/aspx page>
<input type=file name=MY_FILE ~~~>
</form>

On the ASP.NET page, in the Page_Load I would code somethign like this:

[URL]

Here is the trick, the control "fileLIST_FILE" does not exist because the HTML does not have runat=server on it.

If the client did have runat=server the designer.cs would have somethign liek this:

System.Web.UI.HtmlControls.HtmlInputFile fileLIST_FILE;

With all that said, I want to make "fileLIST_FILE" on the fly inside Page_Load fromt he posted name of "MY_FILE".

do not focus on the fact that this is a file upload. I would like to know how to do this for any posted FORM data.