关于参数的看似愚蠢的查询

本文关键字:查询 于参数 参数 | 更新日期: 2023-09-27 18:26:27

我使用C#在ASP.NET MVC 4中工作,我正试图将一个ActionResult方法的参数转换为一个变量,以便在另一个方法中使用。所以我举了一个例子:

    public ActionResult Index(int ser)
    {
        var invoice = InvoiceLogic.GetInvoice(this.HttpContext);
        // Set up our ViewModel
        var pageViewModel = new InvoicePageViewModel
        {
            Orders = (from orders in proent.Orders
                      where orders.Invoice == null
                            select orders).ToList(),
            Callouts = (from callouts in proent.Callouts
                        where callouts.Invoice == null
                            select callouts).ToList(),
            InvoiceId = ser,
            InvoiceViewModel = new InvoiceViewModel
        {
            InvoiceId = ser,
            InvoiceItems = invoice.GetInvoiceItems(),
            Clients = proent.Clients.ToList(),
            InvoiceTotal = invoice.GetTotal()
        }
    };
        // Return the view
        return View(pageViewModel);
    }

我需要int-ser以某种方式成为"全局",并且它的值可用于此方法:

    public ActionResult AddServiceToInvoice(int id)
    {
        return Redirect("/Invoice/Index/");
    }

正如您在上面的return语句中看到的,我得到了一个错误,因为我没有将变量"ser"传递回Index,但我需要它与调用操作时传递给Index的值相同。有人能帮忙吗?

关于参数的看似愚蠢的查询

当您构建到该方法的链接时,您需要确保将变量ser与它所需的任何其他参数一起传递给该方法(不清楚AddServiceToInvoice方法中的id是否实际上是ser参数。这假设它不是)

视图中的操作链接

@Html.ActionLink("Add Service", "Invoice", "AddServiceToInvoice", new {id = IdVariable, ser = Model.InvoiceId})

将服务添加到发票操作方法

public ActionResult AddServiceToInvoice(int id, int ser)
    {
        //Use the redirect to action helper and pass the ser variable back
        return RedirectToAction("Index", "Invoice", new{ser = ser});
    }

您需要创建一个ID为的链接

如果你正在做一个get请求,它会是这样的:

@Html.ActionLink("Add service to invoice", "Controller", "AddServiceToInvoice", 
new {id = Model.InvoiceViewModel.InvoiceId})

否则,如果你想做一篇文章,你需要创建一个表单:

@using Html.BeginForm(action, controller, FormMethod.Post)
{
    <input type="hidden" value="@Model.InvoiceViewModel.InvoiceId" />
    <input type="submit" value="Add service to invoice" />
}