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           DataSet myData = new DataSet();

            OleDbCommand cmd = new OleDbCommand();
            OleDbDataAdapter myAdapter = new OleDbDataAdapter();
            
            connLOC.Open();

            cmd.CommandText = "SELECT TabName, Feldname FROM tStruktur ";
            cmd.Connection = connLOC;

            myAdapter.SelectCommand = cmd;
            myAdapter.Fill(myData, "tStruktur");
           
            CrystalReport1 objRpt = new CrystalReport1();
            objRpt.Load(@"D:\CrystalReport5.rpt");


            objRpt.SetDataSource(myData.Tables["tStruktur"]);

            crystalReportViewer1.ReportSource = objRpt;
            crystalReportViewer1.Refresh();
            
            connLOC.Close();