ASP.NET MVC webgrid 发布问题 - Viewmodel 为 NULL

Question

这是我的模型类：

 public class SensorTest
 {
    public int SerialNo { get; set; }
    public string SensorName { get; set; }
    public string TestName { get; set; }
    public List<string> ImpactSide { get; set; }
 }

 public class SensorTestsViewModel
 {
    public List<SensorTest> SensorTestList { get; set; }

  }

控制器动作方法： 获取：

---

    [HttpGet]
    public ActionResult SensorTests()
    {

        SensorTestsViewModel obj = new SensorTestsViewModel();
        obj.SensorTestList = new List<SensorTest>();

        SensorTest sensortest;
        sensortest = new SensorTest();
        sensortest.SerialNo = 1;
        sensortest.SensorName = "FLAT 13 KMH";
        sensortest.TestName = "";
        obj.SensorTestList.Add(sensortest);

        sensortest = new SensorTest();
        sensortest.SerialNo = 1;
        sensortest.SensorName = "CURB IMPACT 40KMH";
        sensortest.TestName = "";
        obj.SensorTestList.Add(sensortest);

        return View(obj);
    }

发布：

 [HttpPost]
    [ActionName("SensorTests")]
    public ActionResult SensorTests_Post(SensorTestsViewModel sensortests)
    {
        //SensorTestsViewModel model = new SensorTestsViewModel();
        //UpdateModel(model);

        return View(sensortests);
    }

查看代码：

@model  Safety.Models.SensorTestsViewModel
@using (Html.BeginForm("SensorTests", "Safety"))
{
var grid = new WebGrid(Model.SensorTestList, canSort: false, canPage:   false);
int rowNum = 0;
<div>
    @grid.GetHtml(columns:
        grid.Columns
        (
            grid.Column("SerialNo", format: item => rowNum = rowNum + 1),
             grid.Column("SensorName"),
            grid.Column("TestName", format: (item) =>    Html.TextBox("TestName[" + (rowNum - 1).ToString() + "].TestName", (object)item.TestName))

        ), mode: WebGridPagerModes.Numeric)
</div>
<input type="submit" value="Submit" />
}

在 POST 期间查看 Viewmodel 是否为空。我也尝试过 UpdateModel 。我的要求是我需要将整个视图模型数据发布到控制器并从那里执行必要的操作。不确定我错过了什么？有人可以建议吗？

Answer 1

首先看一下这个例子：post items of webgrid asp.net mvc3

尝试将文本框命名为： "SensorTestList[someIndexHere].SensorName"