private void btnupdate_Click(object sender, EventArgs e) { int parsedvalue; if (!int.TryParse(txtupdateprice.Text, out parsedvalue)) { lblmsg.Text = ("price inputs are invalid. check again...."); } else { //int i =Convert.ToInt32( cboproduct.SelectedValue.ToString()); int i = blod.updateitemprice(cboupdateitem.SelectedValue.ToString(), Convert.ToDecimal(txtupdateprice.Text)); if (i > 0) { MessageBox.Show("Price has been update"); } } }