Can another table be added in data set after i created crystal report ?

CrystalReport1  objRpt = new CrystalReport1();

            string connString = "Data Source=SW-PC-20;Initial Catalog=PSM;Integrated Security=True";
            SqlConnection Conn = new SqlConnection(connString);
            //SqlDataAdapter adepter = new SqlDataAdapter("select Media_method_ID,Media_Name ,Target_Audience   from Media_Method ", connString);

            SqlDataAdapter adepter = new SqlDataAdapter("select m.Media_method_ID,m.Media_Name ,t.Target_Audience_ID,t.Target_Audience   from Media_Method m,Target_Audience t where m.Media_method_ID=t.Media_method_ID", connString);
            DataSet1 Ds = new DataSet1();
            //
            adepter.Fill(Ds, "Media_Method"+"Target_Audience");

            objRpt.SetDataSource(Ds);
            crystalReportViewer1.ReportSource = objRpt;