ASP.NET真分页_接前篇引用AspNetPager.dll进行数据分页

一、前端准备工作

1、之前我写到过《Asp.net中引用AspNetPager.dll进行数据分页》  这种分页方式只能在前台将数据分页，而每次点击查询时对目标数据库还是全查询，这样不仅会消耗数据库资源，还会加长等待时间，所以本文我将介绍如何通过存储过程对数据进行真分页。

2、参考前文将基础搭建完成。

二、分页存储过程。

1、在真分页中，我们要将每一页的数据量，起始行这些发送给后端，后端接收到指令后则按照这个区间进行查询数据，后端数据分页方式在前文中我有详细介绍过。

2、后端分页：SQL Server的两种数据分页方式简析 ，参考此文的分页方式选择合适自己后端分页方法，后面我使用的是存储过程分页-GetPageRecords。

三、页面代码

PS:在AspNetPager.dl开发者官网,也有其它调用方式和用法，大家可以看看有没有新的思路，对于分页控件样式，网上有一些CSS样式可以参考，建议看看，因为原格式实在有些单调。

 <webdiyer:AspNetPager ID="AspNetPager1" runat="server" PageSize="25"
                                HorizontalAlign="Center" Width="100%"
                                meta:resourceKey="AspNetPager1" Style="font-size: 14px"
                                AlwaysShow="false" FirstPageText="首页" LastPageText="尾页" NextPageText="后页"
                                PrevPageText="前页" SubmitButtonText="Go" SubmitButtonClass="submitBtn"
                                CustomInfoStyle="font-size:14px;text-align:left;"
                                InputBoxStyle="width:25px; border:1px solid #999999; text-align:center; "
                                TextBeforeInputBox="转到第" TextAfterInputBox="页 " TextAfterPageIndexBox="页"
                                TextBeforePageIndexBox="转到" Font-Size="14px" CustomInfoHTML="共有%RecordCount%条记录,共%PageCount%页,每页%PageSize%行"
                                ShowCustomInfoSection="Left" CustomInfoSectionWidth="30%"
                                CssClass="paginator"
                                PagingButtonSpacing="3px" OnPageChanged="AspNetPager1_PageChanged" ShowBoxThreshold="25">
                            </webdiyer:AspNetPager

常用自定义项：PageSize:页面显示的行数；

CustomInfoHTML：自定义项（这里可以任意新增删除）

四、后台代码

PS:本文中的代码是从我的测试项目中扣出来的，可根据自己的项目灵活应用，如果有更好的方式和思路欢迎留言。

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)//判断是否回发
        {
            RowDatasBind();//调用函数
        }
    }
    //拼接页面查询条件
    public string Search()
    {
        string SQL = "select PCB_CODE,WORK_ORDER_CODE,PRODUCTION_ORDER_ID,TEST_CODE,PLANT_CODE,CREATE_TIME,DEVICE_NO,(case CONCLUSION when 0 then '通过' when 1 then '不通过' else '其他' end) CONCLUSION from [dbo].[T_Aoi_TEST] WITH (NOLOCK) where 1=1";
        if (!string.IsNullOrEmpty(txtWORK_ORDER_CODE.Text))
        {
            SQL = SQL + " and WORK_ORDER_CODE like'" + "%" + txtWORK_ORDER_CODE.Text.Trim() + "%" + "'";
        }
        if (!string.IsNullOrEmpty(txtPCB_CODE.Text))
        {
            SQL = SQL + " and PCB_CODE like'" + "%" + txtPCB_CODE.Text.Trim() + "%" + "'";
        }
        if (!string.IsNullOrEmpty(txtPRODUCTION_ORDER_ID.Text))
        {
            SQL = SQL + " and PRODUCTION_ORDER_ID like'" + "%" + txtPRODUCTION_ORDER_ID.Text.Trim() + "%" + "'";
        }
        if (!string.IsNullOrEmpty(txtBeginTime.Text) && !string.IsNullOrEmpty(txtEndTime.Text))
        {
            SQL = SQL + " and CHECK_TIME>='" + txtBeginTime.Text + "'" + " and CHECK_TIME<='" + txtEndTime.Text + "'";
        }
        if (ddlCon.Text != "9")
        {
            SQL = SQL + " and CONCLUSION ='" + ddlCon.Text + "'";
        }
        //按创建时间倒序查询
        SQL = SQL + "order by CREATE_TIME desc";
        return SQL;
    }

    //服务器端数据分页
    private void RowDatasBind()
    {
        string SearchConditions = "1=1";//搜索条件
        string SQLgetcount = "select  count(1) from T_Aoi_TEST where 1=1";

        if (!string.IsNullOrEmpty(txtWORK_ORDER_CODE.Text))
        {
            SearchConditions = SearchConditions + " and WORK_ORDER_CODE like''" + "%" + txtWORK_ORDER_CODE.Text.Trim() + "%" + "''";
            SQLgetcount = SQLgetcount + " and WORK_ORDER_CODE like'" + "%" + txtWORK_ORDER_CODE.Text.Trim() + "%" + "'";
        }
        if (!string.IsNullOrEmpty(txtPCB_CODE.Text))
        {
            SearchConditions = SearchConditions + " and PCB_CODE like''" + "%" + txtPCB_CODE.Text.Trim() + "%" + "''";
            SQLgetcount = SQLgetcount + " and PCB_CODE like'" + "%" + txtPCB_CODE.Text.Trim() + "%" + "'";
        }
        if (!string.IsNullOrEmpty(txtPRODUCTION_ORDER_ID.Text))
        {
            SearchConditions = SearchConditions + " and PRODUCTION_ORDER_ID like''" + "%" + txtPRODUCTION_ORDER_ID.Text.Trim() + "%" + "''";
            SQLgetcount = SQLgetcount + " and PRODUCTION_ORDER_ID like'" + "%" + txtPRODUCTION_ORDER_ID.Text.Trim() + "%" + "'";
        }
        if (!string.IsNullOrEmpty(txtBeginTime.Text) && !string.IsNullOrEmpty(txtEndTime.Text))
        {
            SearchConditions = SearchConditions + " and CHECK_TIME>=''" + txtBeginTime.Text + "''" + " and CHECK_TIME<=''" + txtEndTime.Text + "''";
            SQLgetcount = SQLgetcount + " and CHECK_TIME>='" + txtBeginTime.Text + "'" + " and CHECK_TIME<='" + txtEndTime.Text + "'";
        }
        if (ddlCon.Text != "9")
        {
            SearchConditions = SearchConditions + " and CONCLUSION =''" + ddlCon.Text + "''";
            SQLgetcount = SQLgetcount + " and CONCLUSION ='" + ddlCon.Text + "'";
        }

        int StartRow = (AspNetPager1.CurrentPageIndex * AspNetPager1.PageSize) - AspNetPager1.PageSize;//计算起始行
        string SQLGetPage = "EXEC [Common_GetPageRecords] @StartRow=" + StartRow + ",@MaxRows = " + AspNetPager1.PageSize + ",@TableName = N'T_Aoi_TEST',@PrimaryKey = N'TEST_CODE',@GetFields = N'PCB_CODE,WORK_ORDER_CODE,PRODUCTION_ORDER_ID,TEST_CODE,PLANT_CODE,CREATE_TIME,DEVICE_NO,(case CONCLUSION when 0 then ''通过'' when 1 then ''不通过'' else ''其他'' end) CONCLUSION',@SearchConditions ='" + SearchConditions + "',@SortExpression = N'TEST_CODE desc'";

        //计算总行数
        DataSet dss = DBHelper.GetDataSetMis(SQLgetcount);
        DataTable fileNameDt = dss.Tables[0];
        this.AspNetPager1.RecordCount = Convert.ToInt32(fileNameDt.Rows[0][0].ToString());//总行数
        //分页后数据填充
        DataSet ds = DBHelper.GetDataSetMis(SQLGetPage);
        PagedDataSource pds = new PagedDataSource();
        pds.AllowPaging = true;//是否开启分页
        pds.AllowServerPaging = true;//是否开启服务器端分页
        pds.CurrentPageIndex = AspNetPager1.CurrentPageIndex;//当前页的页码
        pds.PageSize = AspNetPager1.PageSize;//每页显示的行数
        int aaa = ds.DefaultViewManager.DataSet.Tables.Count;
        if (ds.DefaultViewManager.DataSet.Tables.Count == 0)//修复当查询结果为空时“无法找到表 0。”的错误
        {
            pds.DataSource = null;
        }
        else
        {
            pds.DataSource = ds.Tables[0].DefaultView;
            if (ds.Tables[0].Rows.Count != AspNetPager1.PageSize)//修复最后一页因为剩余尾数和页数不对应出现索引错误的问题
            {
                pds.PageSize = ds.Tables[0].Rows.Count;
            }
        }
        this.GridView1.DataSource = pds;
        this.GridView1.DataBind();
    }
    /// <summary>
    /// 绑定数据到分页控件
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void AspNetPager1_PageChanged(object sender, EventArgs e)
    {
        RowDatasBind();
    }
    /// <summary>
    /// 条件查询
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void btnQuery_Click(object sender, EventArgs e)
    {
        RowDatasBind();
    } 

五、总结

到这里真假分页以及分页存储过程都已经完成了，页面加载时再也不用漫长的等待。如果你有更好方法建议欢迎吐槽、留言~