Question

学习ASP.NET，我有一个基本表（SQL数据库），其中包含我想要使用下拉菜单过滤的数据。我也已经实现了一个基本的搜索功能，我希望这两个功能一起工作。现在，下拉列表什么也没做。它看到正确的值，但选择一个值什么都不做。

这是我的控制器:(我包含了所有代码的部分内容）

public ActionResult Index(string sortOrder, string currentFilter, string searchString, int? page, string AddressFilter)
    {
        //Sorting parameters
        ViewBag.LastNameSortParm = String.IsNullOrEmpty(sortOrder) ? "eLastName_desc" : ""; ......

var dbEmployee = db.Employee.AsEnumerable().OrderBy(s => s.eLastName, StringComparer.CurrentCulture);
        var employee = from s in dbEmployee select s;
        //Search
        if (searchString == null)
        { ........
           ViewBag.CurrentFilter = searchString;
        //Search functionality 
        if (!String.IsNullOrEmpty(searchString))
        {
            employee = employee.Where(s => 
            s.eLastName.ToUpper().Contains(searchString.ToUpper()) || ......

这是下拉列表的代码。

           //Filter for dropdown, Address
        ViewBag.AddressFilter = (from s in db.Employee
                                   select s.eAddress).Distinct();
        if (!String.IsNullOrEmpty(AddressFilter))
        {
            employee = employee.Where(s => s.eAddress.ToUpper().Contains(AddressFilter.ToUpper()));
        }



       int pageSize = 5;
        int pageNumber = (page ?? 1);
        return View(employee.ToPagedList(pageNumber, pageSize));
    }

我的视图看起来像这样：

@using (Html.BeginForm())
{
<p>Search here: @Html.TextBox("SearchString")
<input type="submit" value="Search"/></p>
}
<p>
@Html.ActionLink("Create New", "Create")
</p>

<p>Department</p>@Html.DropDownList("Department", new 
SelectList(ViewBag.AddressFilter))


<table class="table">
<tr>
    <th>
        @Html.ActionLink("eFirstName", "Index", new { sortOrder = 
ViewBag.FirstNameSortParm, currentFilter = ViewBag.CurrentFilter })
    </th>
    <th>
        @Html.ActionLink("eLastName", "Index", new { sortOrder = 
ViewBag.LastNameSortParm, currentFilter = ViewBag.CurrentFilter })
    </th>
    <th>
        @Html.ActionLink("eAddress", "Index", new { sortOrder = 
ViewBag.AddressSortParm, currentFilter = ViewBag.CurrentFilter })
    </th>
    <th>
        @Html.ActionLink("eSalary", "Index", new { sortOrder = ViewBag.SalarySortParm, currentFilter = ViewBag.CurrentFilter })
    </th>
    <th>
        @Html.ActionLink("Department", "Index", new { sortOrder = ViewBag.DepartmentSortParm, currentFilter = ViewBag.CurrentFilter })
    </th>
    <th></th>
</tr>

所以我显然错过了一些东西而且我无法找到答案。（旁注，地址只是城市，但我还没有更改名称）。感谢您提出任何建议或指示

下拉和搜索过滤链接ASP.NET MVC C＃

0 个答案: