void dGrid_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex < 0 || e.ColumnIndex !=
                dGrid.Columns["Edita"].Index) return;

            
           
            Edita_Dati ed = new Edita_Dati();
            ed.ID = Convert.ToInt32(dGrid[0, e.RowIndex].Value);
            ed.ShowDialog();

            if (e.RowIndex < 0 || e.ColumnIndex !=
               dGrid.Columns["X"].Index)
            {

            }
            else
            {

                using (SQLiteConnection conn = new SQLiteConnection(db.Apri_db().ToString()))
                {
                    string sql = "DELETE  from Main Where ID=" + Convert.ToInt32(dGrid[0, e.RowIndex].Value) + ";";
                    conn.Open();
                    SQLiteCommand cmd = new SQLiteCommand(sql, conn);
                    cmd.ExecuteNonQuery();
                }
            }
        }