private void FilterButton_Click(object sender, RoutedEventArgs e)
        {
            ICollectionView cv;
            string          param = ParamComboBox.Text;

            switch (param)
            {
            case "Наименование":
                try
                {
                    cv = Departament.FilterByDepartamentName(ValueTextBox.Text);
                    DepartamentsDataGrid.ItemsSource = cv;
                }
                catch
                {
                }
                break;
            }
        }