// Validate from control back up to unvalidated or the currently focused control.
private bool ValidateHierarchy(Control control)
{
if (unvalidatedControl == null)
{
unvalidatedControl = focusedControl;
return(true);
}
if (validating)
{
return(false);
}
if (control == null)
{
control = this;
}
if (!IsParent(control, unvalidatedControl))
{
return(false);
}
validating = true;
bool cancelValidate = false;
Control currentControl = unvalidatedControl;
// Validate starts off uncancelled.
if (activeControl != null)
{
activeControl.DoValidationCancel(false);
}
try
{
while (currentControl != control)
{
// Do the validating and validated events if needed.
if (currentControl.CausesValidation)
{
bool cancelled = false;
try
{
cancelled = currentControl.DoValidating();
}
catch (Exception)
{
cancelValidate = true;
throw;
}
if (cancelled)
{
cancelValidate = true;
break;
}
try
{
currentControl.DoValidated();
}
catch (Exception e)
{
Application.OnThreadException(e);
}
}
// Move up the hierarchy.
currentControl = currentControl.Parent;
}
if (cancelValidate)
{
if (activeControl != null)
{
activeControl.DoValidationCancel(true);
if (activeControl is ContainerControl)
{
ContainerControl containerControl = activeControl as ContainerControl;
if (containerControl.focusedControl != null)
{
containerControl.focusedControl.DoValidationCancel(true);
}
containerControl.ResetControlsRecursive();
}
}
ActiveControl = unvalidatedControl;
}
}
finally
{
unvalidatedControl = null;
validating = false;
}
return(!cancelValidate);
}
