public override ValidationResult Validate(object value, CultureInfo cultureInfo)
{
try
{
if (value == null)
{
return(new ValidationResult(false, "You must enter a non-empty value"));
}
if (value is BindingGroup) //Since our XAML has ValidationStep="UpdatedValue" />, then our value is now of type BindingExpression, not the normal string that we expected.
{
BindingGroup bg = value as BindingGroup;
//CiresonTimerActivity ta = bg.Owner.
StackPanel sp = bg.Owner as StackPanel;
CiresonTimerActivityViewModel taViewModel = sp.DataContext as CiresonTimerActivityViewModel;
string strError = null;
if (taViewModel.HasValidDateInfoEntered(out strError))
{
return(ValidationResult.ValidResult);
}
else
{
return(new ValidationResult(false, strError));
}
}
return(new ValidationResult(false, "Was not expecting this obejct here..."));
}
catch
{
return(new ValidationResult(false, "You must make a selection and enter a value"));
}
}
