Assembly: System.Web.Mobile (in System.Web.Mobile.dll)
If you are developing in HTML, the ValidationSummary page renders the value of the property first. When the validation process invalidates a form, it produces a list of ErrorMessage properties for each validator. Each instance of an ErrorMessage property in the list results in an error on the invalid form. This list of errors is followed by a Link that targets the invalid form. The text of the link is the value of the BackLabel property.
The display of errors for WML 1.1 is similar to HTML, except that the property is displayed as plain WML text followed by each error message and preceded by "- " (a hyphen followed by a space).
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.