private void button1_Click(object sender, EventArgs e) { listCustomer cus = new listCustomer(); cus.ShowDialog(); try { this.cusNo.Text = cus.dataGridView1.CurrentRow.Cells[0].Value.ToString(); this.cusname.Text = cus.dataGridView1.CurrentRow.Cells[1].Value.ToString(); this.phone.Text = cus.dataGridView1.CurrentRow.Cells[2].Value.ToString(); } catch (Exception) { return; } }