If the virtual path for the application is "myapp" and the virtual path "/myApp/sub/default.asp" is passed into the VirtualPathUtility.ToAppRelative(string) method, the resulting application-relative path is "~/sub/default.aspx".

If virtualPath does not start with the current application path, the VirtualPathUtility.ToAppRelative(string) method returns the virtual path unchanged.

If virtualPath is the same as the application path, the root operator (the tilde [~]), is returned. For example, the current application virtual directory path can be accessed from the HttpRuntime.AppDomainAppVirtualPath property.

Namespace: System.Web
Assembly: System.Web (in System.Web.dll)
Assembly Versions: 2.0.0.0
Since: .NET 2.0