private void FrmSetupTax_Load(object sender, EventArgs e) { Services.get_GUI a = new get_GUI(); DataTable taxRate = a.GetTaxRate(StaticClass.storeId); creTextBox1.Text = String.Format("{0:0.##}",(Convert.ToDecimal(taxRate.Rows[0]["Tax1_Rate"])*100)); creTextBox2.Text = String.Format("{0:0.##}", (Convert.ToDecimal(taxRate.Rows[0]["Tax2_Rate"]) * 100)); creTextBox3.Text = String.Format("{0:0.##}", (Convert.ToDecimal(taxRate.Rows[0]["Tax3_Rate"]) * 100)); }