Assembly: System.Web (in System.Web.dll)
The HttpRequestBase class uses input validation flags to determine whether to perform validation on the request collections that are accessed through the Cookies, Form, and QueryString properties. The method sets these flags so that when the get accessors of the Cookies, Form, or QueryString properties are invoked, input validation is performed. Validation works by checking all input data against a hard-coded list of potentially dangerous data.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, 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.