SAP Crystal Reports for VS 2010.在運行時更改查詢

Question

我在C sharp中使用SAP CR for VS 2010。我有五個表，我將它們與以下查詢鏈接：

query =「SELECT Items.AccessionNo，Items.Name，Items.LocalName，Items.Usage，Items.Province，Items.District，Items.VillTown， Items.EthnicCommunity，Arts.Name，Items.PurchasedDonated，Items.PurchasedFrom，Items.YearOfCollection，Items.Material，Items.Height，Items.Width，Items.Length，Items.Circumference，Items.Diameter，Items.Color，Items。年齡，Items.Weight，Items.PurchasedValue，Items.Rare，Items.LivingDyingTrad，Items.ManufacturingProcess，Items.PlaceOfManufacturing，Items.ConditionReport，Items.Recommandations，Items.DateOfAddition，Items.Placement，Donators.Name，Collectors.Name， Placement.Name FROM Items INNER JOIN Arts ON Items.ArtId = Arts.ArtId INNER JOIN Donators ON Items.DonatorId = Donators.id INNER JOIN Collectors ON Items.CollectorId = Collectors.id INNER JOIN Placement ON Items.PlacementId = Pla cement.id WHERE Items.id =「+ itemid;

問題是報告在設計時仍然使用已嵌入的查詢顯示多個結果。

我使用下面的代碼通過上面的查詢

  SqlCommand cmd = new SqlCommand(query, dbconn.conn); 
      if (dbconn.conn.State == ConnectionState.Closed) 
      { 
       dbconn.conn.Open(); 
      } 

      SqlDataAdapter Datadpt = new SqlDataAdapter(cmd); 

      DataSet dtset = new DataSet("items"); 
      Datadpt.Fill(dtset); 
      //rep is the Report document object already defined 
      rep.Load(@"..\..\Reports\CRItem.rpt"); 
      rep.SetDataSource(dtset); 
      CRViewer.ReportSource = rep; 
      if (dbconn.conn.State == ConnectionState.Open) 
      { 
       dbconn.conn.Close(); 
      } 
      this.CRViewer.RefreshReport(); 

有什麼建議？

Answer 1

whoooosss .....我明白了。 crystalreportviewer選擇公式與報告文檔記錄選擇公式是分開的。記錄選擇您在水晶報表中創建的公式存儲在ReportDoc.RecordSelectionFormula屬性中。將ReportDoc加載到ReportViewer時，它不會採用.RecordSelectionFormula的值ReportViewer.SelectionFormula屬性。所以我做了什麼....

我的對象是：

ReportDoc As CrystalDecisions.CrystalReports.Engine.ReportDocument 
ReportViewer As CrystalDecisions.Windows.Forms.CrystalReportViewer 
FlexReportDoc.SetParameterValue("Reference", gsReference) 

通過必要的參數後，如果您有任何...

ReportViewer.ReportSource = FlexReportDoc 
ReportViewer.SelectionFormula = FlexReportDoc.RecordSelectionFormula 

您需要分配的FlexReportDoc.RecordSelectionFormula值物業到ReportViewer.SelectionFormula。