Question

我创建了View模型，用于组合两个类以在单个视图中显示多个模型。我创建了linq查询以在View中显示数据。这是我的控制器。

 public ActionResult Details(int id = 0)
    {

        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 ImageData()
                          { 
                             SPID = s.SPID,
                             Sp_name = s.Sp_name,
                             Sp_location = s.Sp_location,
                             Sp_description = s.Sp_description, 
                             Sp_rate = s.Sp_rate, 
                             service_type = s.service_type, 
                             Cityname= c.Cityname, 
                             pic = p.pic });

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

        return View(sp_details);
    }

这是详情视图。我想获得一个特定的配置文件来查看。

@model IEnumerable<WEB1.ViewModel.ImageData>
@{
    ViewBag.Title = "Details";
 }

<div class="span9">
            @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>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", "Hotel")</p></td>
                </tr>
            </table>}

这是索引视图。它在点击超链接后传递了id值。

@foreach (var item in Model)
    {
        <div class="item1">
            <img src="data:image/png;base64,@Convert.ToBase64String(item.pic,0,item.pic.Length)" width="100" />
            <p class="name">@Html.ActionLink(item.Sp_name, "Details", new { id = item.SPID },null)</p>
            <p class="cattype">@Html.DisplayFor(modelItem => item.Sp_location)</p>
            <p>@Html.DisplayFor(modelItem => item.Cityname)</p>
            <p>@Html.DisplayFor(modelItem => item.Sp_rate)</p>
        </div>

    }

我在查询中删除了注释行，然后我获得了所有列表项。但是我想获得一个特定的值。我添加了注释行，然后我得到了空白页面，没有错误但没有数据。

查询数据未在mvc 4中显示查看

0 个答案: