When a validation session is triggered by user interaction, or programmatically by calling the Validate method overload which takes a reference to a single control, the IsSingleEntityValidation property returns true. When validation is triggered by one of the Validate method overloads which could potentially involve more than one control, the IsSingleEntityValidation property returns false.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, 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