Linq多表联合查询,在View中绑定数据

Ⅰ→通过ViewData传递数据,不过需要新建一个类(用来存)

NewClass(里面有表1的字段和表2的字段)

    public class JoinTab1_2
    {
        public int ID { get; set; }
        public string Name { get; set; }
    }

控制器中Action

        public ActionResult Index()
        {using (DBEntities db = new DBEntities())
            {
                var query = (from tab_1 in db.T_Tab1
                             join tab_2 in db.T_Tab2 on T_Tab1.TypeID equals T_Tab2.ID
                             select new JoinTab1_2()
                             {
                                 ID = tab_1.ID,
                                 Name = tab_2.Name
                             }).ToList();
                ViewData["query"] = query;
                return View();
            }
        }

View中(可以直接在控制器中的Action直接右击→添加视图...然后类型选新建的这个,其它自定义吧)

<div class="table-responsive">
    <table class="table" border="1">
        <caption>测试</caption>
        <thead>
            <tr>
                <td>
                    ID
                </td>
                <td>
                    类型名称
                </td>
                <td>
                    操作
                </td>
            </tr>
        </thead>
        <tbody>@foreach (var item in ViewData["query"] as IEnumerable<JoinInstrument>)
            {
                <tr>
                    <td>
                        @item.ID
                    </td>
                    <td>
                        @item.Name
                    </td>
                    <td>
                        <a class="btn" title="编辑" href="@Url.Action("GetInfo",new { id=@item.ID})">查看</a>
                        <a class="btn" title="编辑" href="@Url.Action("Edit",new { id=@item.ID})">修改</a>
                        <a class="btn" title="编辑" href="@Url.Action("Delete",new { id=@item.ID})">删除</a>
                    </td>
                </tr>
            }
        </tbody>
        @*<tfoot>

            </tfoot>*@
    </table>
</div>

Ⅱ→通过return View(query);传递数据→会报错!!!

控制器中Action

        public ActionResult Index()
        {
            using (DBEntities db = new DBEntities())
            {
                var query = (from tab_1 in db.T_Tab1
                             join tab_2 in db.T_Tab2 on T_Tab1.TypeID equals T_Tab2.ID
                             select new JoinTab1_2()
                             {
                                 ID = tab_1.ID,
                                 Name = tab_2.Name
                             }).ToList();
                //ViewData["query"] = query;
                return View(query);
            }
        }

view中

<div class="table-responsive">
    <table class="table" border="1">
        <caption>测试</caption>
        <thead>
            <tr>
                <td>
                    ID
                </td>
                <td>
                    类型名称
                </td>
                <td>
                    操作
                </td>
            </tr>
        </thead>
        <tbody>@foreach (var item in Model)
            {
                <tr>
                    <td>
                        @item.ID
                    </td>
                    <td>
                        @item.Name
                    </td>
                    <td>
                        <a class="btn" title="编辑" href="@Url.Action("GetInfo",new { id=@item.ID})">查看</a>
                        <a class="btn" title="编辑" href="@Url.Action("Edit",new { id=@item.ID})">修改</a>
                        <a class="btn" title="编辑" href="@Url.Action("Delete",new { id=@item.ID})">删除</a>
                    </td>
                </tr>
            }
        </tbody>
        @*<tfoot>

            </tfoot>*@
    </table>
</div>

这样写会报错

我参考这篇文章也没搞出来

 记dynamic的一个小坑 -- RuntimeBinderException:“object”未包含“xxx”的定义

大神看到希望能指点一二...

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原文地址:https://www.cnblogs.com/love-zf/p/6522169.html