Notifies an HtmlTextWriter object, or an object of a derived class, that a control is about to be rendered.
Assembly: System.Web (in System.Web.dll)
The HtmlTextWriter class implementation of the method has no functionality. You must override the method in a class derived from HtmlTextWriter to provide your own rendering functionality. For example, in a markup language that might require <p> elements to be rendered immediately ahead of a control, but where the need for the <p> element is determined earlier, you could use the override.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.