private void StcDocumentHeader_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
 {
     if (e.PropertyName != "Status")
     {
         isModified = true;
     }
     else if (e.PropertyName == "Status")
     {
         //    StcDocumentItemsRadGridView.IsReadOnly = StcDocumentHeader.Status == StatusEnum.Permanent;
     }
     StcDocumentHeaderDataForm.BeginEdit();
     RaiseCanExecuteChanged();
 }
        private void CancelButton_Click(object sender, RoutedEventArgs e)
        {
            OnCanceling();
            if (_dialogResult == true)
            {
                if (StcDocumentHeaderDataForm != null)
                {
                    NavStateTrue();

                    StcDocumentHeaderDataForm.CancelEdit();
                    StcDocumentHeaderDataForm.BeginEdit();
                }
            }
        }