如何在VS2010使用水晶报表组件

2025-03-13 06:22:30
推荐回答(1个)
回答(1):

  VS2010不在像VS2008及以前版本那样支持Crystal Report了,不过SAP公司还是很给劲的,随即发布了CR for2010的免费开放版。虽然如此,但刚上手使用的朋友们可能还是很费周折。下简述使用。
  如果只是为了能够在VS2010中运行有报表的程序,则可以简单的将运行程序所需的dll引入项目即可。如果你的机器没有这些组件可以来这下载:点我。一般只需要引用
  CrystalDecisions.CrystalReports.Engine.dll、CrystalDecisions.Shared.dll和
  CrystalDecisions.Web.dll即可。下载后将其放入web/bin下,然后引用它们就可以了。 上述只适用于运行他人编写的有关报表的项目,做为开发者则还需进行其他工作。
  VS2010不在支持Crystal report的设计,我们下载SAP公司的免费版(for VS2010)来设计即可(设计过程同在VS2008中没什么区别,只是环境独立了)。随后将我们设计的第一个报表文件crTeacherWorkLoad.rpt文件拷贝到项目App_Data中。
  我们使用CryStalReportViewer控件来显示刚才设计好的rpt文件。VS2010IDE工具箱中不包含该控件,如果你安装了CR for VS2010则可以使用如下方法来显示该控件:
  
  如果没有此控件则可以直接将此控件的代码放入所需的aspx页面中,然后在这个aspx页面内注册此控件。
  控件代码如下所示:

  
  

  [xhtml]view plaincopyprint?
  1.   2. AutoDataBind="true"DisplayGroupTree="false"Height="50px"Width="350px"/>
   注册代码放到页面头头,代码如下所示:
  [xhtml]view plaincopyprint?
  1. <%@ Register Assembly="CrystalDecisions.Web, Version=10.5.3700.0, Culture=neutral,
  PublicKeyToken=692fbea5521e1304"
  2. Namespace="CrystalDecisions.Web"TagPrefix="CR" %>
  <%@ Register Assembly="CrystalDecisions.Web, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" Namespace="CrystalDecisions.Web" TagPrefix="CR" %> 如此以来再有了前面的三个dll的引用,就可以使用此控件来显示所需要的报表内容了。显示过程代码如下所示:
  [c-sharp]view plaincopyprint?
  1. //加载报表文件,设置报表源
  2. ReportDocumentreportDocument = new ReportDocument();
  3. reportDocument.Load(Server.MapPath("../../App_Data/crTeacherWorkLoad.rpt")); 4. reportDocument.SetDataSource(DtAllTeacherWorkLoad);//);//DtAllTeacherWorkLoad是查询
  出来的DataTable,其字段同rpt文件字段相同 5. 6.
  7. CrystalReportViewer1.ReportSource = reportDocument; 8. //将数据库信息传递给报表 9. //定义水晶报表的数据库连接信息
  10. ConnectionInfoconnectionInfo = new ConnectionInfo();

  

  11. string aservername, bDBName, cUserId, dPwd; 12. //获取服务器名、数据库名,登录名,密码
  13. aservername = System.Configuration.ConfigurationManager.AppSettings["ServerName"]; 14. bDBName = System.Configuration.ConfigurationManager.AppSettings["DataBase"]; 15. cUserId = System.Configuration.ConfigurationManager.AppSettings["UserId"]; 16. dPwd = System.Configuration.ConfigurationManager.AppSettings["PassWord"]; 17. connectionInfo.DatabaseName = bDBName; 18. connectionInfo.UserID = cUserId; 19. connectionInfo.Password = dPwd;
  20. connectionInfo.ServerName = aservername; 21.
  22. //SetDbLoginForReport(connectionInfo); 23.
  24. TableLogOnInfostableLogOnInfos = CrystalReportViewer1.LogOnInfo; 25.
  26. foreach (TableLogOnInfotableLogOnInfo in tableLogOnInfos) 27. { 28.
  29. tableLogOnInfo.ConnectionInfo = connectionInfo; 30. 31. }
  [csharp]view plaincopyprint?
  1. //加载报表文件,设置报表源 ReportDocument reportDocument = new ReportDocument();
  [csharp]view plaincopyprint?
  1. reportDocument.Load(Server.MapPath("../../App_Data/crTeacherWorkLoad.rpt"));
  [csharp]view plaincopyprint?
  1. reportDocument.SetDataSource(DtAllTeacherWorkLoad);//);
  [csharp]view plaincopyprint?

  

  1. //DtAllTeacherWorkLoad是查询出来的DataTable,其字段同rpt文件字段相
  同 CrystalReportViewer1.ReportSource = reportDocument;
  [csharp]view plaincopyprint?
  1. //将数据库信息传递给报表
  [csharp]view plaincopyprint?
  1. //定义水晶报表的数据库连接信
  息 ConnectionInfo connectionInfo = new ConnectionInfo(); string aservername, bDBName, cUserId, dPwd;
  [csharp]view plaincopyprint?
  1. //获取服务器名、数据库名,登录名,密
  码 aservername = System.Configuration.ConfigurationManager.AppSettings["ServerName"];
  [csharp]view plaincopyprint?
  1. bDBName = System.Configuration.ConfigurationManager.AppSettings["DataBase"];
  [csharp]view plaincopyprint?
  1. cUserId = System.Configuration.ConfigurationManager.AppSettings["UserId"];
  [csharp]view plaincopyprint?
  1. dPwd = System.Configuration.ConfigurationManager.AppSettings["PassWord"];
  [csharp]view plaincopyprint?
  1. connectionInfo.DatabaseName = bDBName; connectionInfo.UserID = cUserId;
  [csharp]view plaincopyprint?

  

  1. connectionInfo.Password = dPwd; connectionInfo.ServerName = aservername;
  [csharp]view plaincopyprint?
  1. //SetDbLoginForReport(connectionInfo);
  [csharp]view plaincopyprint?
  1. TableLogOnInfos tableLogOnInfos = CrystalReportViewer1.LogOnInfo;
  [csharp]view plaincopyprint?
  1. foreach (TableLogOnInfo tableLogOnInfo in tableLogOnInfos)
  [csharp]view plaincopyprint?
  1. { tableLogOnInfo.ConnectionInfo = connectionInfo; }
  
  本文讲了三个小问题,一是如何引用所需dll显示报表文件,二是如何注册CrystalReportViewer控件,三是如何使CrystalReportViewer控件显示报表数据。至于报表文件(rpt)的设计则要学习Crystal Report 10软件的使用了!

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