我使用类似下面的函数在运行时分配连接信息。

 private void SetDBLogonForReport(CrystalDecisions.Shared.ConnectionInfo connectionInfo, CrystalDecisions.CrystalReports.Engine.ReportDocument reportDocument) { CrystalDecisions.CrystalReports.Engine.Tables tables = reportDocument.Database.Tables; foreach (CrystalDecisions.CrystalReports.Engine.Table table in tables) { CrystalDecisions.Shared.TableLogOnInfo tableLogonInfo = table.LogOnInfo; tableLogonInfo.ConnectionInfo = connectionInfo; table.ApplyLogOnInfo(tableLogonInfo); } } 

您应该能够使用必要的信息简单地创建一个新的ConnectionInfo对象，并将其与报告文档一起传递给函数。 希望这可以帮助。

VB代码：

  Dim report = New ReportDocument Try 'open report report.Load(filename, OpenReportMethod.OpenReportByTempCopy) 'do this for each distinct database connection, rather than for table report.SetDatabaseLogon("user", "password", "server", "database") Catch ex As Exception 'preserve the stack trace information Throw End Try 

您可以使用以下代码在运行时为报表应用某些连接详细信息。

请在加载报告rpt文件后立即使用该方法，并将所需的连接详细信息传递给方法，它将从传递的连接详细信息中获取报告数据。

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  public static void CrystalReportLogOn(ReportDocument reportParameters, string serverName, string databaseName, string userName, string password) { TableLogOnInfo logOnInfo; ReportDocument subRd; Sections sects; ReportObjects ros; SubreportObject sro; if (reportParameters == null) { throw new ArgumentNullException("reportParameters"); } try { foreach (CrystalDecisions.CrystalReports.Engine.Table t in reportParameters.Database.Tables) { logOnInfo = t.LogOnInfo; logOnInfo.ReportName = reportParameters.Name; logOnInfo.ConnectionInfo.ServerName = serverName; logOnInfo.ConnectionInfo.DatabaseName = databaseName; logOnInfo.ConnectionInfo.UserID = userName; logOnInfo.ConnectionInfo.Password = password; logOnInfo.TableName = t.Name; t.ApplyLogOnInfo(logOnInfo); t.Location = t.Name; } } catch { throw; } sects = reportParameters.ReportDefinition.Sections; foreach (Section sect in sects) { ros = sect.ReportObjects; foreach (ReportObject ro in ros) { if (ro.Kind == ReportObjectKind.SubreportObject) { sro = (SubreportObject)ro; subRd = sro.OpenSubreport(sro.SubreportName); try { foreach (CrystalDecisions.CrystalReports.Engine.Table t in subRd.Database.Tables) { logOnInfo = t.LogOnInfo; logOnInfo.ReportName = reportParameters.Name; logOnInfo.ConnectionInfo.ServerName = serverName; logOnInfo.ConnectionInfo.DatabaseName = databaseName; logOnInfo.ConnectionInfo.UserID = userName; logOnInfo.ConnectionInfo.Password = password; logOnInfo.TableName = t.Name; t.ApplyLogOnInfo(logOnInfo); } } catch { throw; } } } } }