private void btnNew_Click(object sender, EventArgs e)
        {
            frmAddOrEdit frmAdd = new frmAddOrEdit();

            if (frmAdd.ShowDialog() == DialogResult.OK)
            {
                BindGrid();
            }
        }
        private void btnEdit_Click(object sender, EventArgs e)
        {
            frmAddOrEdit frmEdit = new frmAddOrEdit();

            frmEdit.ContactID = int.Parse(dgvCustomer.CurrentRow.Cells[0].Value.ToString());
            if (frmEdit.ShowDialog() == DialogResult.OK)
            {
                BindGrid();
            }
        }