private void button1_Click(object sender, EventArgs e)
{
DataAccess dac = new DataAccess();
DataTable dt = dac.SelectFromCustomers();
dataGridView1.DataSource = dt;
dataGridView1.Select();
}
private void button2_Click(object sender, EventArgs e)
{
string nam = textBox1.Text;
string adr = textBox2.Text;
string mal = textBox3.Text;
string phn = textBox4.Text;
DataAccess dac = new DataAccess();
if (dac.InsertIntoCustomers(nam, adr, mal, phn))
label5.Text = "Customer Registration Succesfully Completed.";
else
label5.Text = "Registration Failed !!!!";
}