Question

I am new to crystal reports and would like to to display sql data on a crystal report using linq2sql. So far i am just trying to display one field (tripNo) with no luck. My error is the data source object is invalid. Here is my code.

private void runstuff()
    {
        using (DataClasses1DataContext db = new DataClasses1DataContext())
        {
            var test = (from s in db.trips
                        select s.tripNo).First();

            CrystalReport1 cr1 = new CrystalReport1();
            cr1.SetDataSource(test);
            crystalReportViewer1.ReportSource = cr1;
        }
    }

Answer 1

The app.config file needed this line

<startup useLegacyV2RuntimeActivationPolicy="true">