编辑不工作

Question

当我点击它进入编辑页面时，当我完成编辑并单击更新时，它会重定向回页面，但是编辑的项目不会显示更新。但它应该重定向回到包含更新数据的页面。现在没有回报。这就是我所拥有的：

我已经用控制器编辑了这个问题

if (@Model.items.Count > 0)
                            {
                                foreach (var item in @Model.items)
                                {

<div class="form-group">
                    @Html.LabelFor(model => model.expense_acccount, htmlAttributes: new { @class = "control-label col-md-2" })                        
                        @*@Html.EditorFor(model => model.expense_acccount, new { htmlAttributes = new { @class = "form-control" } })*@
                        @Html.DropDownListFor(model => model.item.expense_account.index, new SelectList(Model.accountlist, "Value", "Text"), new { @class = "form-control" })
                        @Html.ValidationMessageFor(model => model.expense_acccount, "", new { @class = "text-danger" })

                </div>

                <div class="form-group">
                    @Html.LabelFor(model => model.item.price, htmlAttributes: new { @class = "control-label col-md-2" })
                    @Html.TextBoxFor(model => model.item.price, new { @id = "price", @class = "form-control", @readonly = "readonly", })
                    @Html.ValidationMessageFor(model => model.item.price, "", new { @class = "text-danger" })
                </div>


                    <div class="form-group">
                        @Html.LabelFor(model => model.item.quantity, htmlAttributes: new { @class = "control-label col-md-2" })
                        @Html.EditorFor(model => model.item.quantity, new { htmlAttributes = new { @class = "form-control" } })
                        @Html.ValidationMessageFor(model => model.item.quantity, "", new { @class = "text-danger" })
                    </div>





                @Html.HiddenFor(model => model.item.selecteduomtext)

                @Html.HiddenFor(model=>model.item.lineNum)
                @Html.HiddenFor(model => model.items)

            </div>

            <div class="form-group">
                <div class="col-md-offset-2 col-md-10">
                    <input type="submit" value="Update" name="Update" class="btn btn-default" />
                    <input type="button" value="Cancel" name="Cancel" onclick="location.href='@Url.Action("IssueItem","Issue")' " class="btn btn-default" />
                </div>

控制器

 private Issue getIssue
    {
        get
        {
            Issue issue = (Issue)Session["Issue"];
            if (issue == null)
            {
                issue = new Issue();
                Session["Issue"] = issue;
            }
            return issue;

        }

    }

public ActionResult Edit(int id)
    {
        getIssue.item = getIssue.items[id - 1];//Returns the requested item for editing
        return View(getIssue);
    }


    /// <summary>
    /// Gets the changes submitted from the user and updates the Item in the List  
    /// </summary>
    /// <param name="issue"></param>
    /// <returns></returns>
    [HttpPost]
    public ActionResult Edit(Issue issue)
    {
        int indx = issue.item.lineNum - 1;
        getIssue.items[indx] = issue.item;

        return RedirectToAction("IssueItem");

    }