How do I resolve this error? Inside reportviewer, in visual studio 2019, C #, windows forms

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I'm making a windows application where I have forms opening inside a main form, when I went to open a report viewer inside the secondary forms (the form that changes constantly, while the main form is fixed)
the program breaks ...

- $ exception {"An error occurred while processing local reports."} Microsoft.Reporting.WinForms.LocalProcessingException

Does anyone know what I should do?

What I have tried:

I tried to generate the reportViewer connection, but so far I couldn't.
Perhaps opening a pop form is more practical.

Posted 23-Jul-20 14:21pm

João Henrique Braga

Updated 23-Jul-20 18:56pm

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Patrice T 23-Jul-20 21:00pm

Tried Google ?

1 solution

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Sandeep Mewara · Accepted Answer · 2020-07-23T18:56:00

See if any of the following works:
1. Set:

C#

this.reportViewer1.ProcessingMode = Microsoft.Reporting.WinForms.ProcessingMode.Local;

2. Define something like:

C#

this.reportViewer1.LocalReport.ReportPath = "Report1.rdlc";

3. Try to set your reporting params like below if not so:

C#

ReportParameter[] parms = new ReportParameter[2];
parms[0] = new ReportParameter("param_name", textbox1.text);
parms[1] = new ReportParameter("param_course", textbox2.text);
this.reportViewer1.LocalReport.SetParameters(parms);
this.reportViewer1.RefreshReport();