Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
The method is used by control developers to extend the functionality of the UpdateProgress control.
The method writes the rendered content of the UpdateProgress control to the browser by using the supplied HtmlTextWriter object. When you override the method in a derived class, call the base class's method so that the child controls of the UpdateProgress control are rendered.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.