private void btnAddClick(object sender, EventArgs e)
 {
     try
     {
         AddingForm adf = new AddingForm(1, null);
         adf.ShowDialog();
         btnGetClick(null, null);
     }
     catch (FormatException ex) { lblInfo.Text = "Отменено"; }
 }
 private void btnModifyClick(object sender, EventArgs e)
 {
     str = new String[9];
     try
     {
         int si = dataGridView.SelectedCells[0].RowIndex;
         DataGridViewRow dr = dataGridView.Rows[si];
         for (int i = 0; i != dr.Cells.Count; i++)
         {
             str[i] = Convert.ToString(dr.Cells[i].Value);
         }
         AddingForm adf = new AddingForm(2, str);
         adf.ShowDialog();
         btnGetClick(null,null);
         dataGridView.CurrentCell = dataGridView.Rows[si].Cells[0];
     }
     catch (NullReferenceException ex) { lblInfo.Text = "Выберите только одну строку для редактирования"; }
     catch (FormatException ex) { lblInfo.Text = "Отменено"; }
 }