Crystal Reports “Failed to open the connection” error in ASP.NET

Question

I have ASP.NET (C#) application which uses SAP Crystal Reports. In Visual Studio everything works well, but when I deploy it to IIS the following error occurs:

"Failed to open the connection. Failed to open the connection 'report name'.rpt".

I have changed my reports to use System DSN now the previous error gone but it generates following error:

"Database Logon Failed"

Any suggestions?

Answer 1

    Dim db As New _yourdbcontext()
    Dim cr As New ReportDocument
    cr.Load(Server.MapPath("~/yourreport.rpt"))
    cr.SetDataSource(db.yourtable.ToList())
    CrystalReportViewer1.ReportSource = cr

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