how to import images from database in rdlc report

dbprocess db = new dbprocess();
   protected void Page_Load(object sender, EventArgs e)
   {
       if (Convert.ToString(Session["usern"]) == "")
           Response.Redirect("login.aspx");
       try
       {
           ReportViewer rpt = new ReportViewer();
           SqlCommand cmd = new SqlCommand();
           SqlConnection conn = new SqlConnection();
           conn = db.openconn();
           cmd.Connection = conn;
           DataSet ds1 = new DataSet();
           //cmd.Parameters.AddWithValue("@tbl", Session["gettable"].ToString());
           //cmd.Parameters.AddWithValue("@instno", Session["usern"].ToString());
           //cmd.Parameters.AddWithValue("@sub_code", Session["sub_code"].ToString());
           //cmd.Parameters.AddWithValue("@c_id", Session["courseid"].ToString());
           //cmd.Parameters.AddWithValue("@col_code", Session["Col_Code"].ToString());

           //cmd.Parameters.AddWithValue("@mode", "report1");
           cmd.Parameters.AddWithValue("@appid", Session["app_id"]);
           if(Convert.ToString(Session["examtype"])=="22222")
               cmd.Parameters.AddWithValue("@mode", "report1");
           else if(Convert.ToString(Session["examtype"])=="11111")
               cmd.Parameters.AddWithValue("@mode", "report2");


           cmd.CommandType = CommandType.StoredProcedure;
           cmd.CommandText = "[RegisterCard_report]";
           SqlDataAdapter da = new SqlDataAdapter(cmd);
           da.Fill(ds1);
           cmd.Parameters.Clear();


           ReportDataSource obj1 = new ReportDataSource("RCBcom_Dataset", ds1.Tables[0]);
           //ReportDataSource obj2 = new ReportDataSource("DataSet2", ds1.Tables[1]);
           //ReportDataSource obj3 = new ReportDataSource("DataSet3", ds1.Tables[2]);


           //string nm = ds1.Tables[2].Rows[0][1].ToString();

           ReportViewer1.LocalReport.DataSources.Add(obj1);
           //ReportViewer1.LocalReport.DataSources.Add(obj2);
           //ReportViewer1.LocalReport.DataSources.Add(obj3);

           if (Convert.ToString(Session["examtype"]) == "22222")
                ReportViewer1.LocalReport.ReportPath = "RCBComreport.rdlc";
           else if (Convert.ToString(Session["examtype"]) == "11111")
               ReportViewer1.LocalReport.ReportPath = "RCBAreport.rdlc";

          // ReportViewer1.LocalReport.ReportPath = "report1.rdlc";
           ReportViewer1.LocalReport.Refresh();
           //-------- Print PDF directly without showing ReportViewer ---
           Warning[] warnings;
           string[] streamids;
           string mimeType;
           string encoding;
           string extension;
           byte[] bytePdfRep = ReportViewer1.LocalReport.Render("PDF", null, out mimeType, out encoding, out extension, out streamids, out warnings);
           Response.ClearContent();
           Response.ClearHeaders();
           Response.Buffer = true;
           Response.ContentType = "application/pdf";
           Response.AddHeader("content-disposition", "attachment;filename=\"" + Session["usern"].ToString() + ".pdf" + "\""); //Give file name here
           Response.BinaryWrite(bytePdfRep);
           Session["status"] = 5;
       }
       catch { }

   }