C# 如何在MVC中从数据库中检索数据并将其显示给webgrid

现在，在我的应用程序中，程序正在运行，数据库行名称显示在网格中，但datagrid上没有数据，它假定在其中显示来自数据库的数据

MVC控制器：

public ActionResult Index(int? pageNumber, int? pageSize, string filter, string sortColumn, string sortOrder, int? totalCount)

    {
         //List<UserActivityModels> userActivity = null;

        List<UserActivityModels> userActivity = new List<UserActivityModels>();


        //totalCount = 0;

        string sqlWhere = string.Empty;

        sqlWhere = string.IsNullOrEmpty(filter) ? sqlWhere : sqlWhere +
            " AND (Id LIKE @filter)  ";

        string sqlOrderBy = "ORDER BY " + sortColumn + " " + sortOrder;

        String sqlSelect = @"
           SELECT Id
            ,CreatedBy
            ,CreatedOn
            ,ModifiedBy
            ,ModifiedOn
            ,ContactId
            ,EntityName
            ,EntityId
            ,ActivityType
            ,ActivityStatus
            ,DueDate
            ,ActualEndDate
            ,MasqueradeOn
            ,MasqueradeBy 
        FROM UserActivity 
        ORDER BY CreatedOn DESC
       WHERE @Id = Id
       LIMIT @PageSize OFFSET @PageNumber
        ";
        //WHERE @Id = Id
        //LIMIT @PageSize OFFSET @PageNumber
        string sqlCount = @"
        SELECT COUNT(Id) TotalCount 
        FROM UserActivity
              ";


        try
        {
            using (IDbConnection db = new MySqlConnection(ConfigurationManager.ConnectionStrings["CRMPORTALSQLCONN"].ConnectionString))
            {
                userActivity = (List<UserActivityModels>)db.Query<UserActivityModels>(sqlSelect, new

                {
                    @filter = "%" + filter + "%",
                    @PageSize = pageSize,
                    @PageNumber = (pageNumber - 1) * pageSize

                });

                ViewData["totalCount"] = (int)db.ExecuteScalar<int>(sqlCount, new
                {
                    @filter = filter,
                    @PageNumber = pageNumber,
                });
                ViewData["filter"] = filter;
                ViewData["PageSize"] = 30;

                return RedirectToAction("Index");
            }
        }

        catch
        {
            //throw new Exception("Unable to retrieve data from DB.", ex);
            return View(userActivity);
        }

        //return View(userActivity);

        /* if (userActivity != null)
         {
             return RedirectToAction(userActivity);
         }*/
    }


    //POST: /UserActivity/Index
    [HttpPost]
    public ActionResult Index(FormCollection collection)
    {
        try
        {
            // TODO: Add insert logic here

            return RedirectToAction("Index");
        }
        catch
        {
            return View();
        }
    }

但是在VisualStudio上没有错误显示

这是索引视图：

    @*<p>
    @Html.ActionLink("Create New", "Create")
</p>*@

   <h3>User Activity</h3>
   @using (Html.BeginForm("index", null, FormMethod.Get))
   {
<div class="row">
    <div class="col-sm-8">
        <div class="input-group">

            <input type="text"
                   name="filter"
                   value="@ViewBag.filter"
                   class="form-control"
                   style="display: inline"
                   placeholder="Search by Contact Id" />
            <span class="input-group-btn">
                <button class="btn btn-default" type="submit">Go</button>
            </span>

        </div>
    </div>
    <div class="pull-right col-lg-1">
        <a class="btn btn-success" data-modal="" href="/UserActivity/Create" id="btnCreate">
            <span class="glyphicon glyphicon-plus"></span>
        </a>
    </div>
</div>

<div class="table-responsive" style="margin-top:5px;">
    @{
        var grid = new WebGrid(
                    Model,
                    canPage: true,
                    rowsPerPage: 5,
                    canSort: true);
        //ajaxUpdateContainerId: "grid");

        //grid.Bind(Model, rowCount: (int)ViewData["totalCount"], autoSortAndPage: false);

        grid.Pager(WebGridPagerModes.All);

        @grid.GetHtml(
       //htmlAttributes: new { id = "grid" },
    // id for ajaxUpdateContainerId parameter
    fillEmptyRows: false,
    tableStyle: "table table-striped",
    mode: WebGridPagerModes.All,
    columns: grid.Columns(
      //grid.Column("Id", "Id"),
      grid.Column("Id", "Id", style: "col-lg-1", canSort: true),
      grid.Column("CreatedBy", "CreatedBy", style: "col-lg-6"),
      grid.Column("CreatedOn", header: "CreatedOn", style: "col-lg-2", canSort: true),
      grid.Column("ModifiedBy", header: "ModifiedBy", style: "col-lg-2"),
      grid.Column("ModifiedOn", header: "ModifiedOn", style: "col-lg-2"),
      grid.Column("ContactId", header: "ContactId", style: "col-lg-2"),
      grid.Column("EntityName", header: "EntityName", style: "col-lg-2"),
      grid.Column("EntityId", header: "EntityId", style: "col-lg-2"),
      grid.Column("ActivityType", header: "ActivityType", style: "col-lg-2"),
      grid.Column("ActivityStatus", header: "ActivityStatus", style: "col-lg-2"),
      grid.Column("DueDate", header: "DueDate", style: "col-lg-2"),
      grid.Column("ActualEndDate", header: "ActualEndDate", style: "col-lg-2"),
      grid.Column("MasqueradeOn", header: "MasqueradeOn", style: "col-lg-2"),
      grid.Column("MasqueradeBy", header: "MasqueradeBy", style: "col-lg-2"),


      grid.Column(header: "Action", canSort: false, style: "action",
 format: @<text>
        @Html.Raw("<a data-modal='' href='/UserActivity/Details/" + item.Id + "' id='" + item.Id + "' title='Detail'> <span class='glyphicon glyphicon-search'> </span> </a>")
        @Html.Raw("<a data-modal='' href='/UserActivity/edit/" + item.Id + "' id='" + item.Id + "' title='Edit'> <span class='glyphicon glyphicon-edit'> </span> </a>")
        @Html.Raw("<a data-modal='' href='/UserActivity/delete/" + item.Id + "' id='" + item.Id + "' title='Delete'> <span class='glyphicon glyphicon-trash'> </span> </a>")
</text>)

    ));
    }

</div>
        }

---

是否有人可以告诉我如何从数据库中检索数据并将其显示在gridview中

视图顶部附近的可能重复的put@model列表，然后作为视图中的测试，尝试访问模型以确保它已填充。。。类似@Html.RawModel.EntityName的内容