hi to All....

Can anybody help me?

I want two reports (with two parmeters @p1 and @p2) in one CrystalReportViewer...

But I don't understand my mistake:

Dim prF As New ParameterField
Dim prFs As New ParameterFields
Dim rangeval As New ParameterRangeValue

prF = New ParameterField
prF.Name = "@city_name"

rangeval.StartValue = ListBox1.Items.Item(0) 'parameter @p1
rangeval.EndValue = ListBox1.Items.Item(1) 'parameter @p2

prF.CurrentValues.Add(rangeval)
prFs.Add(prF)
CrystalReportViewer1.ParameterFieldInfo = prFs
CrystalReportViewer1.ReportSource = myCrysReport

Gratitude to all answered

              First of all know one thing, u cannot display 2 reports in a single report viewer simultaneously.U can have 2 different buttons for 2 reports. upon cliking button u can passs the corresponding dataset itself to the form containing reportviewer and assign that dataset to report document object.Just follow this example...Ensure that u have included the namespace;

using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;

//put the following in ur form load or button clik event

   DateTime StartDate = StartDateTimePicker.Value;//combobox's value
   DateTime EndDate = EndDateTimePicker.Value;//combobox's value


       ReportDocument cr = new ReportDocument();
         //' stored procedure direct in the report.
      cr.Load("CrystalReportTesting.rpt"); //ensure u keep this report in the project directory
          cr.SetDataSource(reportDataSet);
         //' Set CrystalReportViewer.ReportSource
         crystalReportViewer1.ReportSource = cr;
ParameterField field1 = this.crystalReportViewer1.ParameterFieldInfo[0];//u can give parameter name in quotes or simply mention index like this.
ParameterField field2 = this.crystalReportViewer1.ParameterFieldInfo[1];//u can give parameter name in quotes or simply mention index like this.

 ParameterDiscreteValue val1 = new ParameterDiscreteValue();
 ParameterDiscreteValue val2 = new ParameterDiscreteValue();
               val1.Value = StartDate;
               val2.Value = EndDate;
               field1.CurrentValues.Add(val1);
               field2.CurrentValues.Add(val2);
Hope this meets u well..
Rgrds,
dinesh



m.dinesh

A lot of thanks to your answer, dinesh.....
I shall try...