ContainerControl::ValidateChildren Method
Causes all of the child controls within a control that support validation to validate their data.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Return Value
Type: System::Booleantrue if all of the children validated successfully; otherwise, false. If called from the Validating or Validated event handlers, this method will always return false.
ValidateChildren will descend a control's hierarchy and examine each control to see if it supports validation. If the control can be selected by the user and its CausesValidation property is true, ValidateChildren will cause the Validating event to occur. If any of the controls cancel the Validating event, this method will return false; otherwise, it will return true.
If a control is bound to a data source, and the Validating event occurs, it will cause the control to push its current data back to the data source.
Calling ValidateChildren is equivalent to calling ValidateChildren with a ValidationConstraints of None.
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.