Gets a file filter associated with the URL-specific property.
Assembly: System.Web (in System.Web.dll)
A designer provides a filter in file selectors based on the UrlPropertyAttribute attribute. By default, it is initialized to "*.*", which specifies all files with a file extension. You can set the filter for more specific file types; for example, the filter "*.aspx" indicates that only ASP.NET files are represented by the URL-specific property.
Available since 2.0