private void buttonADD_Click(object sender, EventArgs e)
 {
     using (AddEdit_MovieForm frm = new AddEdit_MovieForm(null, 0))
     {
         if (frm.ShowDialog() == DialogResult.OK)
         {
             mOVIEBindingSource.DataSource = db.Movies.ToList();
         }
     }
 }
 private void dgvMovies_DoubleClick(object sender, EventArgs e)
 {
     model.MID = Convert.ToInt32(dgvMovies.CurrentRow.Cells["MID"].Value);
     using (AddEdit_MovieForm frm = new AddEdit_MovieForm(mOVIEBindingSource.Current as MOVIE, model.MID))
     {
         if (frm.ShowDialog() == DialogResult.OK)
         {
             mOVIEBindingSource.DataSource = db.Movies.ToList();
         }
     }
 }