When implemented by a class, gets or sets the error message text generated when the condition being validated fails.
Assembly: System.Web (in System.Web.dll)
ASP.NET developers access this property declaratively in the opening tag of a validation server control. For more information, see Validation Server Control Syntax.
This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview.
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.