列表得到部分填充。没有使用 Dapper 获取 ID

Question

我正在尝试使用 Dapper 填充下拉列表，但是当我从 stored procedure 中获取值时 ID 未获取，仅获取名称不知道我在哪里出错了。这是我的代码

控制器

public ActionResult Index()
    {
        string str = @"Data Source=DEV_3\SQLEXPRESS;Initial Catalog=DB_Naved_Test;Integrated Security=True";
        SqlConnection con = new SqlConnection(str);
        var para = new DynamicParameters();
        para.Add("@Type", 1);
        var result = con.Query<Region>("Sp_MVCDapperDDl", para, commandType: CommandType.StoredProcedure);
        var list = new SelectList(result,"CountryId","CountryName");
        ViewData["country"] = list;
        return View();
    }

型号

 public class Region
{
    private int _CountryId;
    private string _CountryName;
    public int CountryId
    {
        get { return _CountryId; }
        set { _CountryId = value; }
    }
    public string CountryName
    {
        get { return _CountryName; }
        set { _CountryName = value; }
    }
}

查看

@using (Html.BeginForm())
{
@Html.DropDownList("Country", ViewData["country"] as SelectList, "Select Country", new { id = "Country", style = "width: 150px;" })<br />
<select id="State" name="state" , style="width: 150px;"></select><br />
<select id="city" name="City" , style="width: 150px;"></select><br />
}

@Scripts.Render("~/bundles/jquery")
<script type="text/jscript">
  $(function ()
{
    $('#Country').change(function ()
    {        
        $.getJSON('/Cascading/StateList/' + $('#Country').val(), function (data)
        {
            var items = '<option>Select State</option>';
            $.each(data, function (i, state)
            {
                items += "<option value='" + state.Value + "'>" + state.Text + "</option>";
            });
            $('#State').html(items);
        });
    });

    $('#State').change(function ()
    {
        $.getJSON('/Cascading/Citylist/' + $('#State').val(), function (data)
        {
            var items = '<option>Select City</option>';
            $.each(data, function (i, city)
            {
                items += "<option value='" + city.Value + "'>" + city.Text + "</option>";
            });
            $('#city').html(items);
        });
    });
});

存储过程

ALTER procedure [dbo].[Sp_MVCDapperDDl]
 (
 @Type int,
 @CountryId int=0,
 @StateId int=0 
 )
 as
 if @Type=1
 begin
 select * from tbl_country
 end
 if @Type=2
 begin
  select * from tbl_states where cid=@CountryId
 end
 if @Type=3
 begin
 select * from tbl_cities where stateid=@StateId
 end

Answer 1

只需要一个小版本就可以正常工作了

public class Region
{
    private int _cid;
    public int Cid
    {
        get { return _cid; }
        set { _cid = value; }
    }
private string _CountryName;
public string CountryName
{
    get { return _CountryName; }
    set { _CountryName = value; }
}

}

列表得到部分填充。没有使用 Dapper 获取 ID

List getting partially filled. Id is not getting fetched using Dapper

asp.net

stored-procedures

razor

dapper

asp.net-mvc-4