Dummy data in Crystal Report at runtime

When using Crystal Reports, in Design mode, you preview your report by clicking "Main Report Preview".

To bind the report I use:

crDaily1.SetDataSource((DataTable)dtDaily);
crDaily1.SetParameterValue("pPeriod", title);

If I put this code in

private void FormReportDaily_Shown(object sender, EventArgs e)

sometimes the dummy data that appears in "Main Report Preview" is shown at runtime. I really don't know the reason?!.

Resolution:

Put the binding code

crDaily1.SetDataSource((DataTable)dtDaily);
crDaily1.SetParameterValue("pPeriod", title);

in the constructor:

public FormReportDaily()