how to dislay two tables in crystal report?

问题

i'm stuck in displaying the fields two tables in crystal reports. i'm trying to code it manually but this code wont work. it works only one table to display i think.

here is my code:

''''''''''''''''connection to database''''''''''''''''''''''''''''''''''
connectionsrvr = New MySqlConnection("server=localhost;userid=root;password=;database=ticketing_system;")

    connectionsrvr.Open()

    If connectionsrvr.State = ConnectionState.Closed Then
        MsgBox("Cannot connect to server")
    End If
''''''''''''''''''''''''''''''''''''''''''''''''''''
Dim ds As New DataSet
        Dim sql As String

        sql = "SELECT complaint.*,errordesc.* FROM complaint,errordesc WHERE status='finished'"
        Dim dscmd As New MySqlDataAdapter(sql, connectionsrvr)
        dscmd.Fill(ds, "complaint")


        connectionsrvr.Close()

        Dim objret As New CrystalReport1
        objret.SetDataSource(ds.Tables(0))

        CrystalReportViewer1.ReportSource = objret
        CrystalReportViewer1.Refresh()

来源：https://stackoverflow.com/questions/21247358/how-to-dislay-two-tables-in-crystal-report