When I try to display the html file HostingEnvironment.MapPath I got the error. There was a problem with my code and got
an exception message as,
An exception of type 'System.ArgumentException' occurred in System.Web.dll but was not handled in user code
Additional information: The relative virtual path '../Data/page.html' is not allowed here.
Instead of passing the path '../Data/page.html' we should use path like this,
System.Web.Hosting.HostingEnvironment.MapPath("~/Data/" + md)