Question

我有一个跟随控制器：

public class StoreController : Controller
{
    public ActionResult Index(string category, int? page)
    {
      //some code
    }
}

以及将数据发布到Index方法的视图：

 @using (Html.BeginForm("Index", "Store", new { category = Model.Category, page = 1}))
 {
    <input type = "submit" class="btn btn-default" value = "Search" />
    @:Choose category: &emsp;
    @Html.DropDownListFor(model => model.Category, new[]
    {
        new SelectListItem{ Text = "All", Value = "All", Selected = true},
        new SelectListItem{ Text = "Cat1", Value = "Cat1"},
        new SelectListItem{ Text = "Cat2", Value = "Cat2"},
        new SelectListItem{ Text = "Cat3", Value = "Cat3"}
    })
 }

问题是，传递给Index方法的路由值显然是错误的，因为Model.Category是传递给视图的模型的类别。我尝试使用下拉列表中的选定值进行路由。问题是如何检索它？

我知道我可以用jquery Ajax做到这一切，但我想先用这种方式尝试。是否可以以简单的方式进行，或者我是否真的需要修改GET请求？

Answer 1

你的模型应该是

public class MyModel
{
    public string Category {get; set;}
    public int? page {get; set;}
}

使用此

public class StoreController : Controller
{
    [HttpPost]
    public ActionResult Index(MyModel model)
    {
        // process ur submit page with proper category
    }

    [HttpGet]
    public ActionResult Index()
    {
      var model = new MyModel();
      model.Category = "All"; // the default category
      return View();
    }
}

以这种方式渲染下拉列表

@Html.DropDownListFor(model => model.Category, new[]
{
    new SelectListItem{ Text = "All", Value = "All" },  // YOU DO NOT NEED TO KEEP THIS SELECTED, MVC DOES AUTO SELECT BASED ON PROPERTY VALUE
    new SelectListItem{ Text = "Cat1", Value = "Cat1"},
    new SelectListItem{ Text = "Cat2", Value = "Cat2"},
    new SelectListItem{ Text = "Cat3", Value = "Cat3"}
})

将下拉列表值插入路由值

1 个答案: