<add name="AppDBConnectionString" connectionString="Data Source=.;Initial Catalog=AppDB;User ID=sa;Password=zhaoyun123!@#;MultipleActiveResultSets=True;Application Name=EntityFramework"
providerName="System.Data.SqlClient" />

public ActionResult Reporting(string type = "PDF", string queryStr = "", int rows = 0, int page = 1)
        {
            //选择了导出全部
            if (rows == 0 && page == 0)
            {
                rows = 9999999;
                page = 1;
            }
            GridPager pager = new GridPager()
            {
                rows = rows,
                page = page,
                sort="Id",
                order="desc"
            };
            List<SysSampleModel> ds = m_BLL.GetList(ref pager, queryStr);
            LocalReport localReport = new LocalReport();
            localReport.ReportPath = Server.MapPath("~/Reports/SysSampleReport.rdlc");
            ReportDataSource reportDataSource = new ReportDataSource("DataSet1", ds);
            localReport.DataSources.Add(reportDataSource);
            string reportType = type;
            string mimeType;
            string encoding;
            string fileNameExtension;

            string deviceInfo =
                "<DeviceInfo>" +
                "<OutPutFormat>" + type + "</OutPutFormat>" +
                "<PageWidth>11in</PageWidth>" +
                "<PageHeight>11in</PageHeight>" +
                "<MarginTop>0.5in</MarginTop>" +
                "<MarginLeft>1in</MarginLeft>" +
                "<MarginRight>1in</MarginRight>" +
                "<MarginBottom>0.5in</MarginBottom>" +
                "</DeviceInfo>";
            Warning[] warnings;
            string[] streams;
            byte[] renderedBytes;

            renderedBytes = localReport.Render(
                reportType,
                deviceInfo,
                out mimeType,
                out encoding,
                out fileNameExtension,
                out streams,
                out warnings
                );
            return File(renderedBytes, mimeType);
        }