private void btnDelete_Click(object sender, EventArgs e)
 {
     try
     {
         if (MessageBox.Show("Are you to delete this record?", "Note", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
         {
             bool deleted = courseCRUD.DeleteCourse(int.Parse(txtCId.Text));
             if (deleted)
             {
                 MessageBox.Show("Record deleted successfully");
             }
             else
             {
                 MessageBox.Show("Error while deleting record!");
             }
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
     }
 }