Hi All :
If the main report have one sub report, and I have define the field link between main report and subreport.
When the vs2010, I have write the code as below
_Cnn.Open();
SqlCommand _cmd = new SqlCommand("SELECT ID, STUDENTNAME, CLASSNUM'", _Cnn);
SqlDataReader _reader = _cmd.ExecuteReader();
DataTable _dt1 = new DataTable();
_dt1.Load(_reader);
_cmd = null;
_reader = null;
_cmd = new SqlCommand("SELECT STUDENTID , CLASSBOOK FROM LIBARYN", _Cnn);
_reader = _cmd.ExecuteReader();
DataTable _dt2 = new DataTable();
_dt2.Load(_reader);
ReportDocument _Report = new ReportDocument();
string _report = @"reportstgetReport.rpt";
_Report.Load(_report);
_Report.SetDataSource(_dt1);
_Report.OpenSubreport("subreport").SetDataSource(_dt2);
crv.ReportSource = _Report;
The reportviewer will prompt to input value of parameter field (but this parameter field is link field between main report and sub report).
How to handle it ?
Michael