RDLC - 后台代码直接导出Excel/PDF/Word格式

最近做报表功能，用到了.net的报表组件rdlc。

其中有个功能就是后台代码直接输出Excel/PDF/Word格式的文件，
网上看了些资源，做个总结：

参考地址

我直接贴出代码：

//自动导出excel/pdf/word

        private void ResponseFile(int oType, string fileName)

        {

            string outType;

            if (oType == )

            {

                outType = "Excel";

            }

            else if (oType == )

            {

                outType = "Word";

            }

            else

            {

                outType = "Word";

            }

            try

            {

                Warning[] warnings;

                string[] streamids;

                string mimeType;

                string encoding;

                string extension;

                byte[] bytes = ReportViewer1.LocalReport.Render(

                        outType, null, out mimeType, out encoding, out extension,

                        out streamids, out warnings);

                    Response.Clear();

                    Response.Buffer = true;

                    Response.ContentType = mimeType;

                    Response.AddHeader("content-disposition", "attachment;filename=" + fileName + "." + extension);

                    Response.BinaryWrite(bytes);

                    Response.Flush();

            }

            catch (Exception ex)

            {

                throw new Exception(ex.Message);

            }

        }