列表中数据的上下移动

aspx页面代码：

<%#(Convert.ToInt32(Eval("sortindex")) == nMaxIndex) ? "" : "<td class='wenzi'>

<a href='#' onclick=\"sortInformation(" + Eval("fid") + "," + ",'up'," + Eval("sortindex") + ")\">上移</a></td>"%>



<%#(Convert.ToInt32(Eval("sortindex")) == nMinIndex) ? "" : "<td class='wenzi'>

<a href='#' onclick=\"sortInformation(" + Eval("fid") + "," + ",'down'," + Eval("sortindex") + ")\">下移</a></td>"%>

上述三元表达式，保证当是列表中第一条数据时，没有上移链接，当是列表中最后一条数据时候，没有下移链接；

 

aspx.cs文件代码：

protected int nMaxIndex = FooterBLL.GetMaxIndex();  //获得最大索引 protected int nMinIndex = FooterBLL.GetMinIndex();  //获得最小索引

  

JS文件代码：

//上下移动

function sortInformation(keyID,optype,sortindex) {

    if (keyID <= 0) {

        alert("无效的信息ID参数，操作终止。");

        return;

    }

    if (sortindex <= 0) {

        alert("无效的索引值，操作终止。");

        return;

    }

    if (optype != ‘up’ && optype != 'down') {

        alert("无效的操作类型，操作终止。");

        return;

    }



    $.ajax({

        type: 'POST',

        url: 'UserControl/SetInfoSort.ashx',

        data: {

            KeyID: keyID,

            SortIndex: sortindex,

            OpType: optype

        },

        success: function (res) {

            if (res == 1) {

                window.location.reload();

            } else {

                alert("移动操作失败,请重试。");

            }

        },

        error: function () {

            alert("移动请求发送失败,请重试。");

        }

    });

}

 

 

ashx文件代码： 

public class SetInfoSort : IHttpHandler {

    

    public void ProcessRequest (HttpContext context) {

        context.Response.ContentType = "text/plain";



        string strRescult = "0";   //1：成功 0：失败



        string strKeyID = context.Request.Form["KeyID"];

        int nKeyID = 0;

        if (!int.TryParse(strKeyID, out nKeyID) || nKeyID <= 0)

        {

            context.Response.Write(strRescult);

            return;

        }



        string strSortIndex = context.Request.Form["SortIndex"];

        int nSortIndex = 0;

        if (!int.TryParse(strSortIndex, out nSortIndex) || nSortIndex <= 0)

        {

            context.Response.Write(strRescult);

            return;

        }



        string strCateID = context.Request.Form["CateID"];

        int nCateID = 0;

        if (!int.TryParse(strCateID, out nCateID) || nCateID <= 0)

        {

            context.Response.Write(strRescult);

            return;

        }



        string strOpType = context.Request.Form["OpType"];
　　　　 if(strOpType != "up" && strOpType != "down")

        {

            context.Response.Write(strRescult);

            return;

        } 

        



        if (InformationBLL.SetInformationSort(nKeyID,nSortIndex,nOpType))

            strRescult = "1";

        context.Response.Write(strRescult);

    }

 

    public bool IsReusable {

        get {

            return false;

        }

    }



}

 

 

SQL存储过程：

ALTER PROCEDURE [dbo].[Footer_Sort] 

    @UPKEYID    INT, --改变排序之前，序号较大者

    @DOWNKEYID  INT, --改变排序之前，序号较小者



    @RESCULT    INT OUTPUT   --1：成功 0：失败

AS

BEGIN

    SET @RESCULT = 0



    BEGIN TRAN T

        DECLARE @TEMPUP INT

        DECLARE @TEMPDOWN INT

        SELECT @TEMPUP = SORTINDEX FROM FOOTER WHERE FID = @UPKEYID

        SELECT @TEMPDOWN = SORTINDEX FROM FOOTER WHERE FID = @DOWNKEYID



        UPDATE FOOTER SET SORTINDEX = @TEMPDOWN WHERE FID = @UPKEYID

            IF(@@ERROR <> 0)

            BEGIN

                ROLLBACK TRAN T

            END



        UPDATE FOOTER SET SORTINDEX = @TEMPUP WHERE FID = @DOWNKEYID

            IF(@@ERROR <> 0)

            BEGIN

                ROLLBACK TRAN T

            END

        SET @RESCULT = 1

    COMMIT TRAN T



END