//创建一个空的报表
            Report report = new Report();

            designerControl1.Report = report;
            //恢复设计布局

            designerControl1.RefreshLayout();

            panel2.Controls.Add(designerControl1);

            designerControl1.Dock = DockStyle.Fill;

            designerControl1.UIStateChanged += designerControl1_UIStateChanged;

        // 设计器ui改变事件
         private void designerControl1_UIStateChanged(object sender, EventArgs e)

        {

           // btnSave.Enabled = designerControl1.cmdSave.Enabled;

           // btnUndo.Enabled = designerControl1.cmdUndo.Enabled;

           // btnRedo.Enabled = designerControl1.cmdRedo.Enabled;

        }

            Report report = new Report();

            DataSet ds = new DataSet();

            DataTable dt = new DataTable();

            dt= DbHelperOra.Query(txt_Sql.Text).Tables[0];

            dt.TableName = "测试";

            DataTable dt1 = new DataTable("测试2");

            dt1.Columns.Add("时间");

            dt1.Columns.Add("打印人");

            dt1.Rows.Add("2020-01-01", "管理员");

            dt1.Rows.Add("2020-02-02", "管理");

            ds.Tables.Add(dt.Copy());

            ds.Tables.Add(dt1.Copy());

            report.RegisterData(ds);

            //动态添加参数

            report.SetParameterValue("测试参数名", "测试值");

            //获取指定名称的数据源

            report.GetDataSource("测试").Enabled = true;

            report.GetDataSource("测试2").Enabled = true;

            //调出设计器

            report.Design();

            //显示预览窗口

            report.Show();

            report.Dispose();

            Report report = new Report();

            OpenFileDialog openDlg = new OpenFileDialog();

            openDlg.Filter = "报表文件|*.frx";

            if (openDlg.ShowDialog() == DialogResult.OK)

            {

                report.Load(openDlg.FileName);

                report.Design();

                report.Dispose();

            }