ASP.NET MVC3的WebGrid - 定制，服务器端排序(ASP.NET MVC3 Web

有没有办法覆盖默认MVC3的WebGrid排序行为打电话给我的控制器（这将执行服务器端排序并返回数据）时，排序是叫什么名字？

谢谢你的帮助！

你可以通过在服务器端排序的数据到的WebGrid，与信息一起上多少记录有。 http://msdn.microsoft.com/en-us/magazine/hh288075.aspx有一个有益的演练。我在做数据库级排序/过滤/分页，以尽量减少正在传递的数据量。我不认为我的网络服务器会爱我，如果我通过了所有70000个对象的客户刚刚这样他们就可以看到第1页上的25这是你需要的几乎所有，但只是包装你的IEnumerable集合了非常轻巧视图模型有一些额外的传呼数据。

由于网格只是使用的查询字符串瓦尔来决定做什么，你需要使用GET方法的形式。你需要在一个方法的WebGrid知道如何阅读查询字符串排序字段/方向。所以，你最终像本地主机/例子/管理/事网址吗？thingName =凯悦和城市=＆状态= TX及乡村=排序=城市＆sortdir = ASC

控制器：

    public ActionResult Index(string thingName, string city, string state, string country, int page = 1)
            {
                const int pageSize = 25;                
                int totalRecords = 0; 
                IEnumerable<Thing> things = ThingModel.GetPagedSortedLocationsForCustomer(customerId, sort, sortdir, out totalRecords, pageSize, page, thingName, city, state, country);

                PagedThings viewModel = new PagedThings(pageSize, page, totalRecords, things);

                return View(viewModel);
            }

视图：

@model ExampleCompany.Area.ViewModels.PagedThings 

@{  



using (Html.BeginForm("Index", "ThingaMaBob", System.Web.Mvc.FormMethod.Get))
{

    <label for="ThingName">ThingName</label>@Html.TextBox("ThingName", "")
    <label for="City">City</label>@Html.TextBox("City", "")
    <label for="State">State</label>@Html.TextBox("State", "")
    <label for="Country">Country</label>@Html.TextBox("Country", "")
    <input type="submit" value="Filter" />

    <br />
    var grid = new WebGrid(canPage: true, rowsPerPage: Model.PageSize, canSort: true);
    grid.Bind(Model.Things, rowCount: Model.TotalRows, autoSortAndPage: false);
    grid.Pager(WebGridPagerModes.All);

        @grid.GetHtml(htmlAttributes: new { id = "grid"},
        columns: grid.Columns(
            //ommitted
            grid.Column("thingName", "Thing"),
        ));

    Html.Hidden(grid.SortFieldName, grid.SortColumn);
    Html.Hidden(grid.SortDirectionFieldName, grid.SortDirection == SortDirection.Ascending ? "ASC" : "DESC");
}

模型：

public static IEnumerable<Thing> GetPagedSortedThingsForCustomer(int customerid, String sortby, String sorttype, out int totalRecords, int pageSize, int pageIndex, string thingName, string city, string state, string country)
        {
            var tmp = new List<Thing>();
            int total = 0;

            dynamic dr = OurDBUtility.ReturnDR("ExampleProc_GetThingsSortedPaged", ConnectionInfo.ExampleConnection, customerid, sortby, sorttype, pageSize, pageIndex, thingName, city, state, country);
            {
                while (dr.Read())
                {
                    var tmpThing = new Thing();
                    tmpThing.LoadFromDr(dr);
                    tmp.Add(tmpThing);
                    if (total == 0)
                    {
                        total = (int)dr["TOTAL_THINGS"];
                    }
                }
            }
            totalRecords = total;

            return tmp;
        }

PROC动态SQL - 是的，你可以使用LINQ到SQL或其他技术，如果你想，但我的老同学：

 CREATE PROCEDURE ExampleProc_GetThingsSortedPaged
      ( @CustomerId  int
       , @sortby    nvarchar(60)
      , @sorttype   nvarchar(60)
      , @pageSize int
      , @pageIndex int
      , @thingName nvarchar(255) = null
      , @city nvarchar(30) = null
      , @state nvarchar(30) = null
      , @country char(2) = null
      )
    as

        DECLARE @strSql      nvarchar(3000) 
        --calculate paging rows
        declare @startRow int, @endRow int
        --e.g. if you have a page size of 10, page 1 = 1 - 10, page 2 = 11 -20 
        set @startRow = ((@pageIndex - 1) * @pageSize) + 1
        set @endRow = @startRow + @pageSize - 1

        if @thingName = ''
            set @thingName = null
        if @city = ''
            set @city = null
        if @state = ''
            set @state = null
        if @country = ''
            set @country = null

        --return total for webgrid, accounting for filter
        declare @totalThings int
        select @totalThings = COUNT(*)
        from EXAMPLE_TABLE T with(nolock)
        where CUSTOMER_ID = @CustomerId
            AND (T.THING_NAME LIKE @thingName + '%' OR @thingName is null)              
            AND (T.CITY LIKE @city + '%' or @city is null) 
            AND (T.STATE LIKE @state + '%' or @state is null) 
            AND (T.COUNTRY = @country or @country is null)



        DECLARE @ParameterDefinition AS NVARCHAR(200)


        set @ParameterDefinition = '@totalThings int, @CustomerId INT, @startRow INT, @endRow INT, @thingName nvarchar(255), @city nvarchar(30), @state nvarchar(30), @country char(2)'

        --When we need to do dynamic sql it is better to use paramterization, but you cannot do (ORDER BY @sortBy).     
        SET @strSql = N'SELECT * from
                        (
                        select ROW_NUMBER() OVER (ORDER BY T.' + @sortby + ' ' + @sorttype + ') as Row, 
                            @totalThings  [TOTAL_THINGS],
                             T.THING_ID, T.THING_NAME, T.ADDRESS, T.CITY,  T.STATE, 
                            T.ZIP_CODE, T.COUNTRY 
                        FROM EXAMPLE_TABLE T
                        WHERE T.CUSTOMER_ID = @CustomerId 
                          AND (T.THING_NAME LIKE @thingName + ''%'' OR @thingName is null)              
                          AND (T.CITY LIKE @city + ''%'' or @city is null) 
                          AND (T.STATE LIKE @state + ''%'' or @state is null) 
                          AND (T.COUNTRY = @country or @country is null)
                           ) paged
                        where Row between @startRow and @endRow 
                        ORDER BY Row'

        --print @strSql
        EXECUTE sp_executesql @strSql, @ParameterDefinition, @totalThings, @CustomerId, @startRow, @endRow, @thingName, @city, @state, @country


    GO

PROC与CTE：

CREATE PROCEDURE ExampleProc_GetThingsSortedPaged
  ( @CustomerID  int
  , @sortby    nvarchar(60)
  , @sorttype   nvarchar(60)
  , @pageSize int = 25
  , @pageIndex int = 1
  , @thingName nvarchar(255) = null
  , @city varchar(30) = null
  , @state nvarchar(30) = null
  , @country char(2) = null
  )
as



declare @startRow int
declare @endRow int

SET @startRow = ((@pageIndex - 1) * @pageSize) + 1;
SET @endRow = @startRow + @pageSize - 1;

set @sortby = replace(LOWER(@sortby), '_', '')
SET @sorttype = LOWER(@sorttype)

if @sorttype != 'asc' and @sorttype != 'desc'
begin
      set @sorttype = 'asc'
end

;with cte_things as (
      SELECT 
            CASE
                  WHEN @sortby ='country' AND @sorttype = 'asc'  then row_number() over (order by C.COUNTRY_NAME ASC)
                  WHEN @sortby ='country' AND @sorttype = 'desc' then row_number() over (order by C.COUNTRY_NAME DESC)

                  WHEN @sortby ='state' AND @sorttype = 'asc'  then row_number() over (order by STATE ASC) 
                  WHEN @sortby ='state' AND @sorttype = 'desc' then row_number() over (order by STATE DESC)

                  WHEN @sortby ='city' AND @sorttype = 'asc'  then row_number() over (order by CITY ASC)
                  WHEN @sortby ='city' AND @sorttype = 'desc' then row_number() over (order by CITY DESC)

                  WHEN @sortby ='thingname' AND @sorttype = 'desc' then row_number() over (order by THING_NAME DESC) 
                  ELSE row_number() over (order by THING_NAME ASC)
            END AS Row
            ,T.THING_ID, T.THING_NAME, T.THING_TYPE, T.ADDRESS, T.CITY, T.STATE
            , T.ZIP_CODE, T.COUNTRY_CODE, C.COUNTRY_NAME, T.PHONE_NUMBER
            , T.LATITUDE, T.LONGITUDE
            FROM EXAMPLE_TABLE L 
            join COUNTRIES C 
                  on C.COUNTRY_CODE = L.COUNTRY_CODE
            where
                  T.CUSTOMER_ID = @CustomerId 
                  and L.CITY = ISNULL(@city, CITY)
                  and L.STATE = ISNULL(@state, STATE)
                  and L.COUNTRY_CODE = ISNULL(@country, L.COUNTRY_CODE)
                  and L.THING_NAME = ISNULL(@thingName, THING_NAME)
)
, cte_total as (select COUNT(*) as TOTAL_THINGS from cte_things)
, cte_all as (select cte_things.*, cte_total.TOTAL_THINGS from cte_things cross join cte_total)

SELECT * FROM cte_all
where
      Row >= @startRow
      and Row <= @endRow  
ORDER BY Row



GO