Question

我已经为我的项目使用了db first方法。我创建了SQL server db并创建了ADO.net模型。在数据模型中，有几个表即service_provider，picture，comment。我在单个视图中为显示数据创建了viewmodel。下面我给出了我的Controller方法，用于检索特定的配置文件。

public ActionResult Details(int id = 0)
{
    List<ImageData> details = new List<ImageData>();
    var sp_details = (from s in db.service_provider
                      join p in db.pictures on s.SPID equals p.SPID
                      join c in db.cities on s.City_ID equals c.City_ID
                      select new { s.SPID,s.Sp_name, s.Sp_location,s.Sp_description, s.Sp_rate, s.service_type, c.Cityname, p.pic });

    foreach (var item in sp_details)
    {
        ImageData SpView = new ImageData(); // ViewModel
        SpView.Sp_name = item.Sp_name;
        SpView.Sp_location = item.Sp_location;
        SpView.Cityname = item.Cityname;
        SpView.Sp_rate = item.Sp_rate;
        SpView.pic = item.pic;

        if (SpView.SPID == id)
        {
            details.Add(SpView);
        }
    }

    if (details == null)
    {
        return HttpNotFound();
    }

    return View(details);
}

这是我的观点

@model List<WEB1.ViewModel.ImageData
@{
    ViewBag.Title = "Details";
}
<div class="span9">
    <div class="itembody">
        <div class="itemprofile">

            @foreach(var item in Model)
            {

                <p class="name">@Html.DisplayFor(modelItem => item.Sp_name)</p>
                <p class="cattype">@Html.DisplayFor(modelItem => item.Sp_location)</p>
                <table>
                    <tr>
                        <td>Place Type</td>
                        <td>@Html.DisplayFor(modelItem => item.Cnt_type)</td>
                    </tr>
                    <tr>
                        <td>Opening Hours</td>
                        <td>@Html.DisplayFor(modelItem => item.Cnt_wh)</td>
                    </tr>
                    <tr>
                        <td></td>
                        <td>@Html.DisplayFor(modelItem => item.Sp_description)</td>
                    </tr>

                    <tr>
                        <td>Rate</td>
                        <td>@Html.DisplayFor(modelItem => item.Sp_rate)</td>
                    </tr>
                    <tr>
                        <td></td>
                        <td><p>@Html.ActionLink("Back to List", "Index")</p></td>
                    </tr>
                </table>
            }


        </div>
    </div>
</div>

上面的代码显示列表中的所有数据。但我想只显示一个 SPID == id 的配置文件。有人可以帮我解决我的问题。

Answer 1

这是你需要做的。过滤您的选择，然后它将返回您要显示的项目。

public ActionResult Details(int id = 0)
        {
            List<ImageData> details = new List<ImageData>();
            var sp_details = (from s in db.service_provider
                              join p in db.pictures on s.SPID equals p.SPID
                              join c in db.cities on s.City_ID equals c.City_ID
                              where s.SPID == id
                              select new { s.SPID,s.Sp_name, s.Sp_location,s.Sp_description, s.Sp_rate, s.service_type, c.Cityname, p.pic });

检索列表中的所有数据，而不是列表中的一个特定项

1 个答案: