1. private void button3_Click(object sender, EventArgs e)
  2.         {
  3.             List<itemObjOrdered> listt2 = new List<itemObjOrdered>(listt);
  4.             gf.SaveGroup((comboBox1.SelectedItem as itemObj).Id_o, textBox1.Text, textBox2.Text);
  5.             foreach (itemObjOrdered it in listt)
  6.             {
  7.                 bool del = true;
  8.                 foreach (itemObjOrdered it2 in listBox1.Items)
  9.                     if (it.Id_o == it2.Id_o)
  10.                     {
  11.                         del = false;
  12.                         break;
  13.                     }
  14.                 if (del)
  15.                 {
  16.                     gf.DeleteTableFromGroup((comboBox1.SelectedItem as itemObj).Id_o, it.Id_o);
  17.                 }
  18.             }
  19.  
  20.             foreach (itemObjOrdered it in listBox1.Items)
  21.             {
  22.                 bool add = true;
  23.                 foreach (itemObjOrdered it2 in listt)
  24.                     if (it.Id_o == it2.Id_o)
  25.                     {
  26.                         add = false;
  27.                         break;
  28.                     }
  29.                 if (add)
  30.                 {
  31.                     gf.MoveTableToGroup((comboBox1.SelectedItem as itemObj).Id_o, it.Id_o);
  32.                 }
  33.             }
  34.             for (int i = 0; i < listBox1.Items.Count; i++)
  35.             {
  36.                 if ((listBox1.Items[i] as itemObjOrdered).order != i)
  37.                 {
  38.                     (listBox1.Items[i] as itemObjOrdered).order = i;
  39.                     gf.SetOrderTableInGroup((comboBox1.SelectedItem as itemObj).Id_o, (listBox1.Items[i] as itemObjOrdered).Id_o, (listBox1.Items[i] as itemObjOrdered).order);
  40.  
  41.                 }
  42.             }
  43.             comboBox1_SelectedIndexChanged(this, null);
  44.         }