protected void txtCutomerName_TextChanged(object sender, EventArgs e) { string CustCode = txtCutomerName.Text.ToString().Split(':')[0].Trim(); DataTable dt1 = new DataTable(); dt1 = Specimen.Get_Name(CustCode, "Customer").Tables[0]; if (dt1.Rows.Count != 0) { txtCutomerName.Text = CustCode; lblCustName.Text = Convert.ToString(dt1.Rows[0]["CustName"]); txtCutomerName.Focus(); } else { lblCustName.Text = "No such Customer code"; txtCutomerName.Focus(); txtCutomerName.Text = ""; } }