水晶报表不能导出不能打印的有关问题

protected void Page_Load(object sender, EventArgs e)    {        if (!IsPostBack)        {            string sqlstr = "select distinct FOG_CODE from Inf_TestData";            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, conn);            DataTable mydt = new DataTable();            ArrayList arr = new ArrayList();            conn.Open();            myda.Fill(mydt);            foreach (DataRow dr in mydt.Rows)            {                arr.Add(dr[0].ToString().Substring(0, 14));            }            DropDownList1.DataSource = arr;            DropDownList1.DataBind();            conn.Close();        }        if (Session["myReport"] != null)        {            CrystalReportViewer1.ReportSource = (ReportDocument)Session["myReport"];        }    }        protected  void GenerateBtn_Click(object sender, EventArgs e)    {        TextBox1.Text = Request.Form["Select1"];        DataSet1 dt1 = new DataSet1();        //实例化DataTable          DataTable mytable = new DataTable("mytable");        //创建一个名为"id"的列，值类型为int          DataColumn dc1 = new DataColumn("id", typeof(int));        dc1.AllowDBNull = false;//不允许为空          dc1.AutoIncrement = true;//自动递增          dc1.AutoIncrementSeed = 1;//列起始值为1          dc1.AutoIncrementStep = 1;//步长为1          mytable.Columns.Add(dc1);//添加列到表中          DataColumn dc = new DataColumn("value", typeof(double));        mytable.Columns.Add(dc);        DataRow row = mytable.NewRow();        double[] DOU = new double[GetDOU(fogName, date).Length];        GetDOU(fogName, date).CopyTo(DOU, 0);        for (int i = 0; i < (int)(DOU[25004] - 25000) / 10; i++)        {            row = mytable.NewRow();            row["value"] = DOU[25001 + i * 10];            mytable.Rows.Add(row);        }        dt1.Tables.Add(mytable);        ReportDocument myReport = new ReportDocument();        string reportPath = Server.MapPath("HTGD.rpt");        myReport.Load(reportPath);        myReport.OpenSubreport("KX.rpt").SetDataSource(mytable);        CrystalReportViewer1.ReportSource = myReport;        myReport.SetParameterValue("Model", Model.Text.ToString());        myReport.SetParameterValue("Number", Number.Text.ToString());        myReport.SetParameterValue("Testdate", Testdate.Text.ToString());        myReport.SetParameterValue("Test", "17589", "Schedule2.rpt");        myReport.SetParameterValue("KX", "5", "KX.rpt");        Session["myReport"] = myReport;    }