Verifies whether the specified control is on the page and contains validation properties.
Assembly: System.Web (in System.Web.dll)
The method is a helper method used primarily by the ControlPropertiesValid method to verify whether the specified control is on the page and contains validation properties. This method does not return a value to report the result. Instead, it throws an exception when verification fails.
This method is used primarily by control developers.
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.