private void nametb_TextChanged(object sender, EventArgs e)
{
if (nametb.Text != "")
{
dataGridView1.DataSource = lc.getCustomerByCustomerName(nametb.Text);
dataGridView1.Columns[0].Width = 30;
dataGridView1.Columns[1].Width = 60;
dataGridView1.Columns[2].Width = 140;
dataGridView1.Columns[3].Width = 160;
dataGridView1.Columns[6].Width = 80;
dataGridView1.Columns[7].Width = 80;
dataGridView1.Columns[8].Width = 50;
}
}