Question

这是我的动作方法，

 public ActionResult getCountry()
    {
        mstrClient objClientList = new mstrClient();
        DataSet ds = new DataSet();
        string sQuery = "SELECT * FROM INV_mstrCountry WHERE CStatus = 'Y'";
        SqlDataAdapter da = new SqlDataAdapter(sQuery, con);
        con.Open();
        da.Fill(ds);
        con.Close();
        List<mstrClient> CountryList = new List<mstrClient>();
        for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
        {
            mstrClient objClient = new mstrClient();
            objClient.CountryCode = ds.Tables[0].Rows[i]["CountryCode"].ToString();
            objClient.Country = ds.Tables[0].Rows[i]["CountryName"].ToString();
            CountryList.Add(objClient);
        }
        objClientList.getCountryList = CountryList;
        return View(objClientList);
    }

我想将上述方法称为该动作方法，准确地说是在MVC中学习，并且在过去两天中一直在挣扎。

 public ActionResult Create()
    {
        mstrClient objClient = new mstrClient();
        ModelState.Clear();
        return View(objClient);
    }

Answer 1

如何在MVC中的视图中调用DropDownList。
首先更改方法以返回对象而不是视图：

public List<mstrClient> getCountry()
{
    mstrClient objClientList = new mstrClient();
    DataSet ds = new DataSet();
    string sQuery = "SELECT * FROM INV_mstrCountry WHERE CStatus = 'Y'";
    SqlDataAdapter da = new SqlDataAdapter(sQuery, con);
    con.Open();
    da.Fill(ds);
    con.Close();
    List<mstrClient> CountryList = new List<mstrClient>();
    for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
    {
        mstrClient objClient = new mstrClient();
        objClient.CountryCode = ds.Tables[0].Rows[i]["CountryCode"].ToString();
        objClient.Country = ds.Tables[0].Rows[i]["CountryName"].ToString();
        CountryList.Add(objClient);
    }
    return CountryList;
}

控制器：

public ActionResult Create()
{
    mstrClient objClient = new mstrClient();
    ModelState.Clear();
    var list = getCountry();
    ViewBag.CountryList = new SelectList(list, "ID_VALUE", "TEXT_ON_DROPDOWNLIST");
    return View(objClient);
}

查看：

 <div class="row">
                <div class="col-md-12">
                    <div class="form-group">
                        <label>Select a item from the dropdownlist</label>
                        @Html.DropDownList("CountryList", null, htmlAttributes: new { @class = "form-control" })
                    </div>
                </div>
            </div>

ASP.NET MVC-如何调用下拉列表将绑定方法绑定到另一个操作方法

1 个答案: