水晶报告和连接问题

这个问题给有经验的人。水晶报告和连接问题

我有设置连接到Crystal报告的问题。我收到了我的客户的报告。他和我的服务器上的数据库结构相同。但服务器和数据库的名称是不同的。他正在使用“命令”创建报告（在数据库字段 - >数据库专家中添加命令...）。这个命令有一些返回数据的功能。我尝试在我的计算机上运行此报告，当我尝试执行TestConnectivity（）时出现问题，此方法返回false。我尝试调试，发现应用ApplyLogOnInfo（）后，内部对象RasTable具有旧的ConnectionInfo。

我使用的下一个代码组连接：

  private void ApplyConnection(ReportDocument report, ConnectionInfo connectionInfo) 
    { 
     ApplyLogOnInfo(report, connectionInfo); 
     ApplyLogOnInfoForSubreports(report, connectionInfo); 
    } 

    private void ApplyLogOnInfo(ReportDocument reportDocument, ConnectionInfo connectionInfo) 
    { 
     foreach (Table table in reportDocument.Database.Tables) 
     { 
      table.LogOnInfo.ConnectionInfo.AllowCustomConnection = true; 
      TableLogOnInfo tableLogonInfo = table.LogOnInfo; 
      tableLogonInfo.ConnectionInfo = connectionInfo; 
      table.ApplyLogOnInfo(tableLogonInfo); 

      _log.InfoFormat("Table connection state: TableName = {0}, IsConnect = {1}", table.Name, table.TestConnectivity()); 
     } 
    } 

    private void ApplyLogOnInfoForSubreports(ReportDocument reportDocument, ConnectionInfo connectionInfo) 
    { 
     Sections sections = reportDocument.ReportDefinition.Sections; 
     foreach (Section section in sections) 
     { 
      ReportObjects reportObjects = section.ReportObjects; 
      foreach (ReportObject reportObject in reportObjects) 
      { 
       _log.InfoFormat("Type = {0}, Name = {1}",reportObject.Name, reportObject.Kind); 
       if (reportObject.Kind == ReportObjectKind.SubreportObject) 
       { 
        var subreportObject = (SubreportObject)reportObject; 
        ReportDocument subReportDocument = subreportObject.OpenSubreport(subreportObject.SubreportName); 
        ApplyLogOnInfo(subReportDocument, connectionInfo); 
       } 
      } 
     } 
    }

所以我的问题是：

我怎样才能树立正确连接到命令？
为什么我无法更改连接？（如果报告是在其他服务器上创建的）。

来源

2011-02-01 ukraine

我以前在几年前面对同样的问题，然后写了一个类。这里是类：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using CrystalDecisions.CrystalReports.Engine; 
using CrystalDecisions.Shared; 

namespace ReportExportDemo 
{ 
    class Reports 
{ 
    static TableLogOnInfo crTableLogonInfo; 
    static ConnectionInfo crConnectionInfo; 
    static Tables crTables; 
    static Database crDatabase; 

    public static void ReportLogin(ReportDocument crDoc, string Server, string Database, string UserID, string Password) 
    { 
     crConnectionInfo = new ConnectionInfo(); 
     crConnectionInfo.ServerName = Server; 
     crConnectionInfo.DatabaseName = Database; 
     crConnectionInfo.UserID = UserID; 
     crConnectionInfo.Password = Password; 
     crDatabase = crDoc.Database; crTables = crDatabase.Tables; 

     foreach (CrystalDecisions.CrystalReports.Engine.Table crTable in crTables) 
     { 
      crTableLogonInfo = crTable.LogOnInfo; 
      crTableLogonInfo.ConnectionInfo = crConnectionInfo; 
      crTable.ApplyLogOnInfo(crTableLogonInfo); 
     } 
    } 

    public static void ReportLogin(ReportDocument crDoc, string Server, string Database) 
    { 
     crConnectionInfo = new ConnectionInfo(); 
     crConnectionInfo.ServerName = Server; 
     crConnectionInfo.DatabaseName = Database; 
     crConnectionInfo.IntegratedSecurity = true; 
     crDatabase = crDoc.Database; crTables = crDatabase.Tables; 

     foreach (CrystalDecisions.CrystalReports.Engine.Table crTable in crTables) 
     { 
      crTableLogonInfo = crTable.LogOnInfo; 
      crTableLogonInfo.ConnectionInfo = crConnectionInfo; 
      crTable.ApplyLogOnInfo(crTableLogonInfo); 
     } 
    } 
} 
}

就在，如果你想知道如何使用这里阅读更多情况：http://midnightprogrammer.net/post/Passing-Parameters-and-Loading-Crystal-Report-Programmatically.aspx

来源

2011-10-12 12:36:10 Prashant

你只需要在方法中添加ref字定义

如下

private void ApplyConnection(ref ReportDocument report, ConnectionInfo connectionInfo) 
{ 
    ApplyLogOnInfo(report, connectionInfo); 
    ApplyLogOnInfoForSubreports(report, connectionInfo); 
} 

private void ApplyLogOnInfo(ref ReportDocument reportDocument, ConnectionInfo connectionInfo) 
{ 
    foreach (Table table in reportDocument.Database.Tables) 
    { 
     table.LogOnInfo.ConnectionInfo.AllowCustomConnection = true; 
     TableLogOnInfo tableLogonInfo = table.LogOnInfo; 
     tableLogonInfo.ConnectionInfo = connectionInfo; 
     table.ApplyLogOnInfo(tableLogonInfo); 

     _log.InfoFormat("Table connection state: TableName = {0}, IsConnect = {1}", table.Name, table.TestConnectivity()); 
    } 
} 

private void ApplyLogOnInfoForSubreports(ref ReportDocument reportDocument, ConnectionInfo connectionInfo) 
{ 
    Sections sections = reportDocument.ReportDefinition.Sections; 
    foreach (Section section in sections) 
    { 
     ReportObjects reportObjects = section.ReportObjects; 
     foreach (ReportObject reportObject in reportObjects) 
     { 
      _log.InfoFormat("Type = {0}, Name = {1}",reportObject.Name, reportObject.Kind); 
      if (reportObject.Kind == ReportObjectKind.SubreportObject) 
      { 
       var subreportObject = (SubreportObject)reportObject; 
       ReportDocument subReportDocument = subreportObject.OpenSubreport(subreportObject.SubreportName); 
       ApplyLogOnInfo(subReportDocument, connectionInfo); 
      } 
     } 
    } 
}

来源

2015-03-21 08:43:35 kaleem

水晶报告和连接问题

回答

相关问题