ASP.NET数据插入问题

Question

protected void ConfirmButton1_Click(object sender, EventArgs e)
        {
            TransportOrder model = new TransportOrder();
            model.MemberID = Convert.ToInt32(MemberDropDownList.SelectedValue);
            model.LineID = Convert.ToInt32(TransportRouteDropDownList.SelectedValue);
            model.Re = ReBox.Text;
            model.State = TransportOrder.YSZ;
            //model.Weight=private void SaveCurrentGridViewData()
        {
            IList<TransportDetail> ls = GetDataSource();
            TextBox txt;
            //double total = 0;
            double weight = 0;
            double tmp;
            int id;
            for (int i = 0; i < ls.Count; i++)
            {
                TransportDetail item = ls[i];                HiddenField hid = ExtendGridView1.Rows[i].FindControl("hidGoodsID") as HiddenField;
                int.TryParse(hid.Value, out id);
                item.ProductID = id;                txt = ExtendGridView1.Rows[i].FindControl("txtProductSpec") as TextBox;
                item.Spec = txt.Text.Trim();                txt = ExtendGridView1.Rows[i].FindControl("txtProductName") as TextBox;
                item.Productname = txt.Text.Trim();                txt = ExtendGridView1.Rows[i].FindControl("txtProductGrade") as TextBox;
                item.Material = txt.Text.Trim();                txt = ExtendGridView1.Rows[i].FindControl("txtProductMaker") as TextBox;
                item.Maker = txt.Text.Trim();                txt = ExtendGridView1.Rows[i].FindControl("txtQty") as TextBox;
                double.TryParse(txt.Text.Trim(), out tmp);
                item.Qty = tmp;                txt = ExtendGridView1.Rows[i].FindControl("txtWeight") as TextBox;
                double.TryParse(txt.Text.Trim(), out tmp);
                item.Weight = tmp;                weight = weight + tmp;            }  下面算出了这个订单的总重量weight=weight + tmp;那上面的weight赋值是这么写啊?   就是注释部分//model.Weight=

Answer 1

你下面的返回个double
private double SaveCurrentGridViewData() 
        { 
return weight ;//最后return 重量
}model.Weight=SaveCurrentGridViewData()；

Answer 2

错误 3 “Simulation.Web.Transport.TransportManage.SaveCurrentGridViewData()”: 并非所有的代码路径都返回值 F:\目录\Code\Simulation.Web\Transport\TransportDistribution.aspx.cs 121 24 Simulation.Web我这样做了  出现了新错误...