asp.net 水晶报表-主从表关联问题_asp.net技巧

一、使用视图meeting将多表关联整合在一起

二、通过Sql语句筛选数据

三、建立和主从表的关联

四、注意在CrystalReport1表中插入子报表的时候，一定要将主从表的关联字段设置好，否则出乱子

主体代码如下：

/// <summary>
  /// Bind CrystalReport
  /// </summary>
  /// <param name=”strS”>sql</param>
  private void bdReport(string strS)
  {
   oCR = new CrystalReport1();
   SqlConnection cnn = new SqlConnection(ConfigurationSettings.AppSettings[“ConnectionSqlServer”]);

   SqlDataAdapter cmd1 = new SqlDataAdapter(strS,cnn);

   //Create and fill the DataSet.

   DataSet2 ds = new DataSet2();
   cmd1.Fill(ds,”meeting”);

   // SqlDataAdapter cmd2 = new SqlDataAdapter(“select * from realplan where rplanid in (select top 10000 planid from (“+sqlStr+”)as  a order by planid)”, cnn);
   SqlDataAdapter cmd2 = new SqlDataAdapter(SqlIsOper, cnn);
  
   cmd2.Fill(ds,”realplan”);

   //Create the relation between the Authors and Titles tables.
   ds.Relations.Add(“mo”,
    ds.Tables[“meeting”].Columns[“planid”],
    ds.Tables[“realplan”].Columns[“rplanid”]);

   //binding reportViewer
   oCR.SetDataSource(ds);

   this.CrystalReportViewer1.ReportSource = oCR;

   //Close the connection.
   cnn.Close();
  
  }

http://skylaugh.cnblogs.com/archive/2006/05/22/406520.html