水晶报表pull模式

 水晶报表拉模式

最简单的一种写法

CrystalReportSource1.ReportDocument.Load(Server.MapPath("Report//*.rpt"));

        // SetDatabaseLogon 拉模式中必须用这个方法来设置登录信息,参数一:用户名;参数二:密码;参数三:服务器;参数四:数据库名  

        CrystalReportSource1.ReportDocument.SetDatabaseLogon("report", "report", @"*", "database");         //给水晶报表传参数,参数一:是参数名,参数二:参数值;          //CrystalReportSource1.ReportDocument.SetParameterValue("Title", "这是一个测试报表"); 

        CrystalReportSource1.ReportDocument.SetParameterValue("BeginDate", txtDateBegin.Text.Trim());  

    //绑定水晶报表数据源。    

    CrystalReportSource1.DataBind(); // CrystalReportViewer1是水晶报表浏览器,下面是给该浏览器赋上对像        

     CrystalReportViewer1.ReportSource = CrystalReportSource1;

        CrystalReportViewer1.DataBind();

这种写法需填写登录数据的信息,太麻烦,以下这种可直接登录并传递参数

  public void LoadReport1()     {

               //定义水晶报表的数据库连接信息    

     ConnectionInfo connectionInfo = new ConnectionInfo();   

      connectionInfo.ServerName = "*";     

    connectionInfo.DatabaseName = "Database";   

      connectionInfo.UserID = "report";      

   connectionInfo.Password = "**";   

      ReportDocument myReport = new ReportDocument();   

      string reportPath = Server.MapPath("Report\\*.rpt");   

      myReport.Load(reportPath);

        //将数据库信息传递给报表     

    SetDBLogonForReport(connectionInfo, myReport);

        myReport.SetParameterValue("BeginDate", txtDateBegin.Text.Trim());   

      myReport.SetParameterValue("EndDate", txtDateFrom.Text.Trim());

        //把模板对象赋给报表前端呈现控件CrystalReportViewer1   

      CrystalReportViewer1.ReportSource = myReport;

            }   

  private void SetDBLogonForReport(ConnectionInfo connectionInfo, ReportDocument reportDocument)

    {         Tables tables = reportDocument.Database.Tables;

        foreach (CrystalDecisions.CrystalReports.Engine.Table table in tables)

        {           

  TableLogOnInfo tableLogonInfo = table.LogOnInfo;    

         tableLogonInfo.ConnectionInfo = connectionInfo;      

       table.ApplyLogOnInfo(tableLogonInfo);

        }    

}

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