再上数据分页控件（不用存储过程）
发布时间：2020-12-12 15:04:07 所属栏目：MsSql教程 来源：网络整理
导读：再上数据分页控件（不用存储过程） 发布日期： 2011 年 04 月 04 日 星期一 作者 : EricHu ? 本篇主要内容如下： · ???? 概述 · ???? 本分页控件原理。 · ???? 分页控件代码。 · ???? 分页控件使用实例。 概述 在前几篇：我介绍了 原创企业级控件库之 大
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再上数据分页控件（不用存储过程）
发布日期：2011年04月04日 星期一 作者:EricHu ? 本篇主要内容如下： ·???? 概述 ·???? 本分页控件原理。 ·???? 分页控件代码。 ·???? 分页控件使用实例。 概述 在前几篇：我介绍了原创企业级控件库之大数据据量分页控件，这个控件主要是通过存储过程进行数据分页，得到了大家的支持，也给出了许多宝贵的建议，在这儿先感谢各位。同时也让我更有信心进行以后的文章（企业级控件库系列）。 分页对于每个项目来说都有它存在的意义，想起在以前刚刚刚软件开发时，由于刚刚毕业，理论知识雄厚，但实际工作经验欠缺，记得几年前做开发时，数据量很大，要用分页，一开始真不知道如何是好，方法到知道，但速度与稳定性却没有经验。在这儿，我只是起到一个抛砖引玉的作用，以便引起我们在实际工作中要多思考，对同一件事多想几种解决方式，只有这样才能不断提高，同时要学会总结。 这篇我将给大家介绍：不用存储过程，直接用代码来实现数据分页，欢迎大家拍砖，觉得不错的可以推荐下。同时，你要用什么好的想法，也可以与我交流，谢谢。 ? ? 本分页控件原理 分页的方法很多，有用存储过程的，有不用存储过程的，还有在C#中用DataGridView的虚拟模式的，目的只有一个，对大数据量进行处理，让用户体验得到提高，软件速度得到提升。本分页控件主要是用了下面的SQL语句，我相信你能看懂的，存储过程分页也是用类似的SQL代码： ?? ?1? /* TableName???????????:表名????????????如:tbTestData?2? ??SqlWhereStatement?? :Sql?Where表达式?如:where表达式为空 ?3? ??PrimaryKey????????? :主键????????????如:UniqueID ?4? ??PageSize??????????? :分页大小????????如:50 ?5? ??pageIndex???????????:当前页??????????如:8 ?6? ??OrderField????????? :排序字段????????如:InsetDataTime? ?7? */ ?8? ?9? SELECT ? TOP ? 50 ? * ? FROM ?tbTestData? 10? WHERE ??UniqueID? NOT ? IN 11? ????( 12? ???????? SELECT ? TOP ?( 50 ? * ? 8 )?UniqueID?? FROM ?tbTestData?? ORDER ? BY ?InsetDataTime? DESC 13? ????)? 14? ORDER ? BY ?InsetDataTime?? DESC ? 原理就这么简单。 ? ? 分页控件代码 ?????? （一）、实例数据库代码 创建实例数据库。 ? CREATE ? TABLE ? [ tbTestData ] (???? [ UniqueID ] ? [ bigint ] ? NOT ? NULL , ???? [ CompanyName ] ? [ varchar ] ( 200 )? NULL , ???? [ CompanyCode ] ? [ varchar ] ( 50 )? NULL , ???? [ Address ] ? [ varchar ] ( 500 )? NULL , ???? [ Owner ] ? [ varchar ] ( 100 )? NULL , ???? [ Memo ] ? [ varchar ] ( 2000 )? NULL , ???? [ InsetDataTime ] ? [ datetime ] ? NULL , ? CONSTRAINT ? [ PK_tbTestData ] ? PRIMARY ? KEY ? CLUSTERED ? ( ???? [ UniqueID ] ? ASC ) WITH ?(PAD_INDEX?? = ? OFF ,?STATISTICS_NORECOMPUTE?? = ? OFF ,?IGNORE_DUP_KEY? = ? OFF ,?ALLOW_ROW_LOCKS?? = ? ON ,?ALLOW_PAGE_LOCKS?? = ? ON )? ON ? [ PRIMARY ] )? ON ? [ PRIMARY ] GO ALTER ? TABLE ? [ dbo ] . [ tbTestData ] ? ADD ?? CONSTRAINT ? [ DF_tbTestData_InsetDataTime ] ?? DEFAULT ?( getdate ())? FOR ? [ InsetDataTime ] GO --生成实例数据 declare ? @intRowNumber ? int ; select ? @intRowNumber ? = ? 1 ; while ? @intRowNumber ? < ? 1000000 begin ???? ???? insert ? into ?tbTestData(UniqueID,CompanyName,CompanyCode,Address,Owner,Memo) ???? values ( @intRowNumber , ' CompanyName ' ? + ? cast ( @intRowNumber ? as ? varchar ( 2000 )), ??????????? ' CompanyCode ' ? + ? cast ( @intRowNumber ? as ? varchar ( 2000 )), ' Address ' + ? cast ( @intRowNumber ? as ? varchar ( 2000 )), ??????????? ' Owner ' ? + ? cast ( @intRowNumber ? as ? varchar ( 2000 )), ' Memo ' ? + ? cast ( @intRowNumber ? as ? varchar ( 2000 )));???? ???? select ? @intRowNumber ? = ? @intRowNumber ? + ? 1 end （二）、分页控件代码。 ? namespace ?DotNet.Controls{ ???? /// ? <summary> ???? /// ?分页控件（使用代码实现，不用存储过程） ???? /// ?UcPageControlByCode ???? /// ?修改纪录 ???? /// ????? ???? /// ?????2010-01-06?胡勇?修改转到某页由原来的KeyPress方法改为KeyDown，让用户按回车键确认转页，以防止连续绑定两次。 ???? /// ?????2011-01-06?胡勇?增加对分页控件的初始化代码:public?DataTable?InitializePageControl()。 ???? /// ?????2011-01-05?胡勇?创建分页控件 ???? /// ?????2011-04-02?胡勇?优化代码、减少不必要的私有变量，去掉多余的代码 ???? /// ????? ???? /// ? <author> ???? /// ????? <name> 胡勇 </name> ???? /// ????? <QQ> 80368704 </QQ> ???? /// ????? <Email> 80368704@qq.com </Email> ???? /// ? </author> ???? /// ? </summary> ????[ToolboxItem( true )] ????[DefaultEvent( " OnEventPageClicked " )] ????[ToolboxBitmap( typeof (UcPageControlByCode),? " Images.UcPageControlByCodeIcon.png " )] ????[Description( " 分页控件（使用代码实现，不用存储过程） " )] ???? public ? partial ? class ?UcPageControlByCode?:?UserControl ????{ ???????? #region ?私有变量 ???????? int ?recordCount? = ? 0 ;? // 记录数 ???????? int ?pageCount??? = ? 0 ;? // 总页数 ???????? int ?pageIndex??? = ? 0 ;? // 当前页 ???????? #endregion ???????? #region ?自定义事件 ???????? /// ? <summary> ???????? /// ?单击分页按钮(第一页、上一页、下一页、最后页、跳页)时发生 ???????? /// ? </summary> ????????[Category( " UcPageControlByCode " ),?Description( " 单击分页按钮时发生 " )] ???????? public ? event ?EventHandler?OnEventPageClicked; ???????? #endregion ???????? #region ?自定义属性 ???????? private ? int ????_pageSize?????????? = ? 50 ;????????????? // 分页大小 ???????? private ? string ?_sqlWhereStatement? = ? string .Empty;??? // MsSql?Where语句 ???????? private ? string ?_sqlConnString????? = ? string .Empty;??? // MsSql?数据库连接字符串 ???????? private ? string ?_tableName????????? = ? string .Empty;??? // 表名???????? ???????? private ? string ?_orderField???????? = ? string .Empty;??? // 数据表的排序字段 ???????? private ? string ?_primaryKey???????? = ? string .Empty;??? // 数据表的主键 ???????? private ? string ?_queryFieldList???? = ? " * " ;???????????? // 字段列表（默认为：*) ???????? private ?DataTable?_pageTable?????? = ? new ?DataTable(); ??????? ???????? /// ? <summary> ???????? /// ?返回当前页码 ???????? /// ? </summary> ???????? public ? int ?PageIndex ????????{ ???????????? get ????????????{ ???????????????? return ?pageIndex? + ? 1 ; ????????????} ????????} ???????? /// ? <summary> ???????? /// ?得到或设置分页大小(默认为:50) ???????? /// ? </summary> ????????[Browsable( true ),?Category( " UcPageControlByCode " ),?Description( " 得到或设置分页大小(默认为:50) " )] ???????? public ? int ?PageSize ????????{ ???????????? get ????????????{ ???????????????? return ?_pageSize; ????????????} ???????????? set ????????????{ ????????????????_pageSize? = ?value; ????????????} ????????} ???????? ???????? /// ? <summary> ???????? /// ?SQL语句的Where表达式 ???????? /// ? </summary> ????????[Browsable( false ),?Description( " 得到或设置SQL语句的Where表达式 " )] ???????? public ? string ?SqlWhereStatement ????????{ ???????????? get ????????????{ ???????????????? return ?_sqlWhereStatement; ????????????} ???????????? set ????????????{ ????????????????_sqlWhereStatement? = ?value; ????????????} ????????} ???????? ???????? /// ? <summary> ???????? /// ?得到或设置SqlServer的连接字符串 ???????? /// ? </summary> ????????[Browsable( false ),?Description( " 得到或设置SqlServer的连接字符串 " )] ???????? public ? string ?SqlConnString ????????{ ???????????? get ????????????{ ???????????????? return ?_sqlConnString; ????????????} ???????????? set ????????????{ ????????????????_sqlConnString? = ?value; ????????????} ????????} ???????? /// ? <summary> ???????? /// ?得到用户单击分页按钮后返回的DataTable ???????? /// ? </summary> ????????[Browsable( false ),?Description( " 得到用户单击分页按钮后返回的DataTable " )] ???????? public ?DataTable?PageTable ????????{ ???????????? get ????????????{ ???????????????? return ?_pageTable; ????????????} ????????} ???????? ???????? /// ? <summary> ???????? /// ?设置或得到与分页控件绑定的表名或视图名 ???????? /// ? </summary> ????????[Browsable( true ),?Description( " 设置或得到与分页控件绑定的表名或视图名 " )] ???????? public ? string ?TableName ????????{ ???????????? get ????????????{ ???????????????? return ?_tableName; ????????????} ???????????? set ????????????{ ????????????????_tableName? = ?value; ????????????} ????????} ???????? ???????? /// ? <summary> ???????? /// ?设置或得到分页控件排序字段 ???????? /// ? </summary> ????????[Browsable( true ),?Description( " 设置或得到分页控件排序字段 " )] ???????? public ? string ?OrderField ????????{ ???????????? get ????????????{ ???????????????? return ?_orderField; ????????????} ???????????? set ????????????{ ????????????????_orderField? = ?value; ????????????} ????????} ???????? ???????? /// ? <summary> ???????? /// ?设置或得到分页控件绑定数据表的主键 ???????? /// ? </summary> ????????[Browsable( true ),?Description( " 设置或得到分页控件绑定数据表的主键 " )] ???????? public ? string ?PrimaryKey ????????{ ???????????? get ????????????{ ???????????????? return ?_primaryKey; ????????????} ???????????? set ????????????{ ????????????????_primaryKey? = ?value; ????????????} ????????} ???????? ???????? /// ? <summary> ???????? /// ?设置或得到分页控件绑定的字段列表(默认为:*) ???????? /// ? </summary> ????????[Browsable( true ),?Description( " 设置或得到分页控件绑定的字段列表(默认为:*) " )] ???????? public ? string ?QueryFieldList ????????{ ???????????? get ????????????{ ???????????????? return ?_queryFieldList; ????????????} ???????????? set ????????????{ ????????????????_queryFieldList? = ?value; ????????????} ????????} ???????? #endregion ???????? #region ?构造函数 ???????? /// ? <summary> ???????? /// ?分页控件（使用代码实现，不用存储过程） ???????? /// ? </summary> ???????? public ?UcPageControlByCode() ????????{ ????????????InitializeComponent(); ????????} ???????? #endregion ???????? #region ?分页实现相关代码 ???????? #region ?void?SetUcPageControlPars(string?connStr,?string?whereStatement,?string?tbName,?string?orderField,?string?primaryKeyName,?string?fieldList):给UcPageControlByCode控件传递必需参数 ???????? /// ? <summary> ???????? /// ?给UcPageControlByCode控件传递必需参数 ???????? /// ? </summary> ???????? /// ? <param?name="connStr"> 连接字符串 </param> ???????? /// ? <param?name="whereStatement"> MsSql?Where语句? </param> ???????? /// ? <param?name="tbName"> 数据表名或视力名 </param> ???????? /// ? <param?name="orderField"> 排序字段 </param> ???????? /// ? <param?name="primaryKeyName"> 主键值 </param> ???????? /// ? <param?name="fieldList"> 字段列表(默认为:*) </param> ???????? public ? void ?SetUcPageControlPars( string ?connStr,? string ?whereStatement,? string ?tbName ???????????????????????????????????????,? string ?orderField,? string ?primaryKeyName,? string ?fieldList) ????????{ ???????????? if ?( string .IsNullOrEmpty(connStr.Trim())) ????????????{ ????????????????DialogHelper.ShowErrorMsg( " 温馨提示：/n无可用的数据库连接！ " ); ???????????????? return ; ????????????} ???????????? else ????????????{ ???????????????? this .SqlConnString? = ?connStr; ????????????} ???????????? this .SqlWhereStatement? = ?whereStatement; ???????????? this .TableName? = ?tbName; ???????????? this .OrderField? = ?orderField; ???????????? this .PrimaryKey? = ?primaryKeyName; ???????????? if ?( ! string .IsNullOrEmpty(fieldList.Trim())) ????????????{ ???????????????? this .QueryFieldList? = ?fieldList; ????????????} ????????} ???????? #endregion ???????? #region ?DataTable?InitializePageControl():初始化UcPageControlByCode ???????? /// ? <summary> ???????? /// ?绑定UcPageControlByCode(并返回包含当前页的DataTable) ???????? /// ? </summary> ???????? /// ? <returns> DataTable </returns> ???????? public ?DataTable?BindPageControl() ????????{ ????????????recordCount??????? = ?GetTotalRecordCount();??????????????????????????? // 获取总记录数?? ????????????pageCount????????? = ?recordCount? / ?PageSize? - ?ModPage();?????????????? // 保存总页数（减去ModPage()函数防止SQL语句执行时溢出查询范围，可以用存储过程分页算法来理解这句）? ????????????pageIndex????????? = ? 0 ;??????????????????????????????????????????????? // 保存一个为0的页面索引值到pageIndex??? ????????????lblPageCount.Text? = ?(recordCount? / ?PageSize? + ?OverPage()).ToString(); // 显示lblpageCount、lblrecCount的状态??? ????????????lblRecCount.Text?? = ?recordCount.ToString(); ???????????????? ???????????? if ?(recordCount? <= ?PageSize) ????????????{ ????????????????txtGoToPage.Enabled? = ? false ; ????????????} ???????????? else ????????????{ ????????????????txtGoToPage.Enabled? = ? true ; ????????????} ???????????? return ?TDataBind();?? ????????} ???????? #endregion ? ???????? #region ?余页计算与总记录数???????? /// ? <summary> ???????? /// ?计算余页 ???????? /// ? </summary> ???????? /// ? <returns></returns> ????????? ???????? private ? int ?OverPage() ????????{ ???????????? int ?returnValue? = ? 0 ; ???????????? if ?(recordCount? % ?PageSize? != ? 0 ) ????????????{ ????????????????returnValue? = ? 1 ; ????????????}?????????? ???????????? return ?returnValue; ????????} ???????? /// ? <summary> ???????? /// ?计算余页，防止SQL语句执行时溢出查询范围??? ???????? /// ? </summary> ???????? /// ? <returns></returns> ???????? private ? int ?ModPage() ????????{ ???????????? int ?returnValue? = ? 0 ; ???????????? if ?(recordCount? % ?PageSize? == ? 0 ? && ?recordCount? != ? 0 ) ????????????{ ????????????????returnValue? = ? 1 ; ????????????} ???????????? ???????????? return ?returnValue; ????????} ???????? /// ? <summary> ???????? /// ?计算总记录数 ???????? /// ? </summary> ???????? /// ? <returns> 记录总数 </returns> ? ???????? private ? int ?GetTotalRecordCount() ????????{ ???????????? int ?returnValue????? = ? 0 ; ???????????? string ?sqlStatement? = ? " select?count(1)?as?rowsCount?from? " ? + ?TableName;? ???????????? if ?(SqlWhereStatement.Trim().Length? > ? 0 ) ????????????{ ????????????????sqlStatement? = ? " select?count(1)?as?rowsCount?from? " ? + ?TableName? + ? " ?where? " ? + ?SqlWhereStatement; ????????????} ????????????SqlDataReader?dr? = ? null ; ???????????? try ????????????{ ????????????????dr? = ?DbHelperSQL.ExecuteReader(sqlStatement,?SqlConnString); ???????????????? if ?(dr.Read()) ????????????????{ ????????????????????returnValue? = ?Int32.Parse(dr[ " rowsCount " ].ToString()); ????????????????} ???????????????? ????????????} ???????????? catch (Exception?ex) ????????????{ ????????????????DialogHelper.ShowErrorMsg(ex.Message); ????????????} ???????????? finally ????????????{ ????????????????dr.Close(); ????????????????dr.Dispose(); ????????????} ???????????? return ?returnValue; ????????} ???????? #endregion ???????? #region ?DataTable?TDataBind():数据绑定 ???????? private ?DataTable?TDataBind() ????????{ ????????????StringBuilder?sbSqlStatement? = ? new ?StringBuilder(); ???????????? bool ?isForward?? = ?pageIndex? + ? 1 ? > ? 1 ; ???????????? bool ?isBackward? = ?(pageIndex? != ?pageCount); ????????????btnFirstPage.Enabled? = ?isForward; ????????????btnPrevPage.Enabled?? = ?isForward;???????????? ????????????btnNextPage.Enabled?? = ?isBackward; ????????????btnLastPage.Enabled?? = ?isBackward;???????????? ???????????? if ?( string .IsNullOrEmpty(SqlWhereStatement.Trim())) ????????????{ ????????????????sbSqlStatement.Append( " SELECT?TOP? " ? + ?PageSize? + ? " ?? " ? + ?QueryFieldList? + ? " ?FROM? " ? + ?TableName? + ? " ?WHERE? " ? + ?PrimaryKey? + ? " ?NOT?IN(SELECT?TOP? " ); ????????????????sbSqlStatement.Append(PageSize? * ?pageIndex? + ? " ?? " ? + ?PrimaryKey? + ? " ?FROM? " ? + ?TableName); ????????????????sbSqlStatement.Append( " ?ORDER?BY? " ? + ?OrderField? + " ?DESC)?ORDER?BY? " ? + ?OrderField? + ? " ?DESC " ); ????????????} ???????????? else ????????????{ ????????????????sbSqlStatement.Append( " SELECT?TOP? " ? + ?PageSize? + ? " ?? " ? + ?QueryFieldList? + ? " ?FROM? " ? + ?TableName? + ? " ?WHERE? " ? + ?SqlWhereStatement? + ? " ?AND? " ? + ?PrimaryKey? + ? " ?NOT?IN(SELECT?TOP? " ); ????????????????sbSqlStatement.Append(PageSize? * ?pageIndex? + ? " ?? " ? + ?PrimaryKey? + ? " ??FROM? " ? + ?TableName? + ? " ?WHERE? " ? + ?SqlWhereStatement? + ? " ??ORDER?BY? " ? + ?OrderField? + ? " ?DESC)?ORDER?BY? " ? + ?OrderField? + ? " ?DESC " ); ????????????} ????????????_pageTable?????????? = ?DbHelperSQL.Query(sbSqlStatement.ToString(),?SqlConnString).Tables[ 0 ]; ????????????lblCurrentPage.Text? = ?(pageIndex? + ? 1 ).ToString(); ????????????txtGoToPage.Text???? = ?(pageIndex? + ? 1 ).ToString(); ???????????? return ?_pageTable; ????????} ???????? #endregion ???????? #region ?按钮事件代码 ???????? private ? void ?btnFirstPage_Click( object ?sender,?EventArgs?e) ????????{ ????????????pageIndex?? = ? 0 ;???????????? ????????????_pageTable? = ?TDataBind(); ???????????? if ?(OnEventPageClicked? != ? null ) ????????????{ ????????????????OnEventPageClicked( this ,? null ); ????????????} ????????} ???????? private ? void ?btnPrevPage_Click( object ?sender,?EventArgs?e) ????????{ ????????????pageIndex -- ;????????????? ????????????_pageTable? = ?TDataBind(); ???????????? if ?(OnEventPageClicked? != ? null ) ????????????{ ????????????????OnEventPageClicked( this ,? null ); ????????????} ????????} ???????? private ? void ?btnNextPage_Click( object ?sender,?EventArgs?e) ????????{ ????????????pageIndex ++ ; ????????????_pageTable? = ?TDataBind(); ???????????? if ?(OnEventPageClicked? != ? null ) ????????????{ ????????????????OnEventPageClicked( this ,? null ); ????????????} ????????} ???????? private ? void ?btnLastPage_Click( object ?sender,?EventArgs?e) ????????{ ????????????pageIndex?? = ?pageCount;??????? ????????????_pageTable? = ?TDataBind(); ???????????? if ?(OnEventPageClicked? != ? null ) ????????????{ ????????????????OnEventPageClicked( this ,? null ); ????????????} ????????} ???????? private ? void ?txtGoToPage_KeyDown( object ?sender,?KeyEventArgs?e) ????????{ ???????????? if ?(e.KeyCode? == ?Keys.Enter) ????????????{ ???????????????? try ????????????????{?????????????????????????????????? ???????????????????? if ?(Int32.Parse(txtGoToPage.Text)? > ?(recordCount? / ?PageSize? + ?OverPage())? || ?Int32.Parse(txtGoToPage.Text)? <= ? 0 ) ????????????????????{ ????????????????????????DialogHelper.ShowWarningMsg( " 页码范围越界! " ); ????????????????????????txtGoToPage.Clear(); ????????????????????????txtGoToPage.Focus(); ????????????????????} ???????????????????? else ????????????????????{ ????????????????????????pageIndex?? = ?Int32.Parse(txtGoToPage.Text.ToString())? - ? 1 ; ????????????????????????_pageTable? = ?TDataBind(); ???????????????????????? if ?(OnEventPageClicked? != ? null ) ????????????????????????{ ????????????????????????????OnEventPageClicked( this ,? null ); ????????????????????????} ????????????????????} ????????????????} ???????????????? catch ?(Exception?ex)? // 捕获由用户输入不正确数据类型时造成的异常???? ????????????????{ ????????????????????DialogHelper.ShowWarningMsg(ex.Message); ????????????????????txtGoToPage.Clear(); ????????????????????txtGoToPage.Focus(); ????????????????} ????????????} ????????} ???????? #endregion ???????? #endregion ????} } ? ? 分页控件使用实例 ???? 客户端使用代码如下： ??????
?2? using ?System.Collections.Generic; ?3? using ?System.ComponentModel; ?4? using ?System.Data; ?5? using ?System.Drawing; ?6? using ?System.Configuration; ?7? using ?DotNet.Controls; ?8? using ?System.Text; ?9? using ?System.Windows.Forms; 10? using ?DotNet.Common; 11? using ?DotNet.WinForm.Utilities; 12? 13? namespace ?DotNet.WinForm.Example 14? { 15? ???? public ? partial ? class ?FrmUcPageControlByCodeTest?:?Form 16? ????{ 17? ???????? public ?FrmUcPageControlByCodeTest() 18? ????????{ 19? ????????????InitializeComponent(); 20? ????????} 21? 22? ???????? private ? void ?FrmUcPageControlByCodeTest_Shown( object ?sender,?EventArgs?e) 23? ????????{ 24? ???????????? // 初始化方法一 25? ???????????? // ucPageControlByCode.SqlConnString?=?ConfigurationSettings.AppSettings["DbConnection"]; 26? ???????????? // ucPageControlByCode.SqlWhereStatement?=?"1=1"; 27? ???????????? // ucPageControlByCode.TableName?=?"tbTestData"; 28? ???????????? // ucPageControlByCode.OrderField?=?"UniqueID"; 29? ???????????? // ucPageControlByCode.PrimaryKey?=?"UniqueID"; 30? ???????????? // ucPageControlByCode.QueryFieldList?=?"*"; 31? 32? ???????????? // 初始化方法二 33? ????????????ucPageControlByCode.SetUcPageControlPars(ConfigurationSettings.AppSettings[ " DbConnection " ],? " 1=1 " ,? " tbTestData " , 34? ???????????????? " UniqueID " ,? " UniqueID " ,? " * " ); 35? ????????????DataTable?dtTest? = ? new ?DataTable(); 36? ????????????dtTest? = ?ucPageControlByCode.BindPageControl(); 37? ????????????ucDataGridView.DataSource? = ?dtTest; 38? 39? ???????????? // 绑定查询项 40? ????????????Dictionary < string ,? string > ?dicListQueryItems? = ? new ?Dictionary < string ,? string > (); 41? ???????????? foreach ?(DataColumn?dc? in ?dtTest.Columns) 42? ????????????{ 43? ????????????????dicListQueryItems.Add(dc.ColumnName,?dc.DataType.ToString()); 44? ????????????} 45? ????????????ucCombinQuery1.SetQueryItems(dicListQueryItems); 46? ????????} 47? 48? ???????? private ? void ?ucDataGridView_DataBindingComplete( object ?sender,?DataGridViewBindingCompleteEventArgs?e) 49? ????????{ 50? ????????????gbMain.Text? = ? " 当前共: " ? + ?ucDataGridView.Rows.Count.ToString()? + ? " 条数据。 " ; 51? ????????} 52? 53? ???????? private ? void ?ucPageControlByCode_OnEventPageClicked( object ?sender,?EventArgs?e) 54? ????????{ 55? ????????????ucDataGridView.DataSource? = ? null ; 56? ????????????ucDataGridView.DataSource? = ?ucPageControlByCode.PageTable; 57? ????????} 58? 59? ???????? private ? void ?ucCombinQuery1_OnQueryClicked( object ?sender,?EventArgs?e) 60? ????????{ 61? ???????????? try 62? ????????????{ 63? ????????????????Splasher.Show( typeof (FrmSplash)); 64? ????????????????Splasher.Status? = ? " 正在查找数据，请稍等... " ; 65? ????????????????System.Threading.Thread.Sleep( 450 ); 66? ????????????????ucDataGridView.DataSource? = ? null ; 67? ????????????????ucPageControlByCode.SqlWhereStatement? = ?ucCombinQuery1.QueryExpression;? // 指定查询表达式 68? ????????????????ucDataGridView.DataSource? = ?ucPageControlByCode.BindPageControl();? // 绑定DataGridView 69? ????????????} 70? ???????????? catch ?(Exception?ex) 71? ????????????{ 72? ????????????????ucPageControlByCode.SqlWhereStatement? = ? " 1<>1 " ; 73? ????????????????ucDataGridView.DataSource? = ?ucPageControlByCode.BindPageControl();? // 绑定DataGridView 74? ????????????????Splasher.Status? = ?ex.Message; 75? ????????????????System.Threading.Thread.Sleep( 1000 ); 76? ????????????} 77? ???????????? finally 78? ????????????{ 79? ????????????????System.Threading.Thread.Sleep( 100 ); 80? ????????????????Splasher.Status? = ? " 查找完毕... " ;??????????????? 81? ????????????????Splasher.Close();???????????????? 82? ????????????} 83? ????????} 84? ????} 85? } ? ???? 最后的效果如下：
? ? ? ? 2011? EricHu 原创作品，转贴请注明作者和出处，留此信息。 ? ------------------------------------------------ cnBlobs:http://www.cnblogs.com/huyong/ ? ? 作者：EricHu（DB、C/S、B/S、WebService、WCF、PM等） Q Q：80368704?? E-Mail: 80368704@qq.com （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
