LoadControl() method throws virtual path error when attempting to load user control from subfolder.

Everything in my app worked fine - then I moved some user controls to a
subfolder named \ControlTemplates that physically exists directly under the
site root.

Then, at runtime when these lines attempts to load a user control from that
subdirectory:
string templateFileName = @"/ControlTemplates/Template01.ascx";
Control templateControl = LoadControl(templateFileName);

The application throws an error with the following message:
The virtual path '/ControlTemplates/Template01.ascx' maps to another
application, which is not allowed.

How can I load user controls that are physically stored in a subfolder under
the site root?

Thanks.

 

Try adding a tilda (~)
string templateFileName = @"~/ControlTemplates/Template01.ascx";

or you can get the root of your app this way:

string templateFileName = Request.ApplicationRoot +
@"/ControlTemplates/Template01.ascx";

-Oleg.

 

Thank you - that solved the problem.