简单明了 c#web 导出 excel,word,pdf, 只包含了文本导出。

其中pdf需要 itextSharp库

public static string sGetBinTemplaterFile(string sfilemode)
        {
            return System.Web.HttpContext.Current.Server.MapPath("bin\\templater." + sfilemode);
        }

        public static void DataSetToExcel(string strText)
        {
            //excel
            string filepath = sGetBinTemplaterFile("xlsx");
            HttpResponse resp;
            resp = HttpContext.Current.Response;
            resp.Clear();
            resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
            resp.AppendHeader("Content-Disposition", "attachment;filename=" + filepath);
            resp.Write(strText);
            resp.Flush();
            resp.End();
        }
        public static void DataSetToWord(string strText)
        {
            string filepath = sGetBinTemplaterFile("doc");
            HttpResponse resp;
            resp = HttpContext.Current.Response;
            resp.Clear();
            resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
            resp.AppendHeader("Content-Disposition", "attachment;filename=" + filepath);
           
            resp.Write(strText);
            resp.Flush();
            resp.End();
        }

        public static void DataSetToPdf(string strText)
        {
            string filepath = sGetBinTemplaterFile("pdf");
            FileStream fs = new FileStream(filepath, FileMode.OpenOrCreate);

            byte[] buffer = new byte[fs.Length];
            fs.Position = 0;
            fs.Read(buffer, 0, (int)fs.Length);

            HttpResponse resp;
            resp = HttpContext.Current.Response;
            resp.Clear();
            resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
            resp.AppendHeader("Content-Disposition", "attachment;filename=" + filepath);

            resp.Clear();
            resp.AddHeader("Content-Length", fs.Length.ToString());
            resp.ContentType = "application/pdf";
            resp.AddHeader("Content-Disposition", "inline;FileName=out.pdf");
            fs.Close();
            resp.BinaryWrite(buffer);
            resp.OutputStream.Flush();
            resp.OutputStream.Close();

            //pdf itextsharp
            //             string file1 = "E:\\test.pdf";
            //             Document document = new Document();
            //             FileStream fs = System.IO.File.Open(file1, FileMode.OpenOrCreate);
            //
            //             PdfWriter.GetInstance(document, fs);
            //
            //             document.Open();
            //             BaseFont bfChinese = BaseFont.CreateFont(@"C:\WINDOWS\Fonts\SIMFANG.TTF", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
            //             Font fontChinese = new Font(bfChinese, 12);
            //
            //             Table aTable = new Table(1);
            //             aTable.Border = 0;
            //             aTable.AddCell(new Paragraph("a1\tb1\tc1\na2\tb2\tc2\n ", fontChinese));
            //             document.Add(new Paragraph("a1\tb1\tc1\na2\tb2\tc2\n ", fontChinese));
            //
            //            
            //             //document.Add(aTable);
            //
            //             document.Close();
        }

        public static string GetDataToString(DataSet ds)
        {
            //定义表对象与行对象，同时用DataSet对其值进行初始化
            DataTable dt = ds.Tables[0];
            DataRow[] myRow = dt.Select();//可以类似dt.Select("id>10")之形式达到数据筛选目的
            int i = 0;
            int cl = dt.Columns.Count;
            string colHeaders = "", ls_item = "", strText = "";

            //取得数据表各列标题，各标题之间以\t分割，最后一个列标题后加回车符
            for (i = 0; i < cl; i++)
            {
                if (i == (cl - 1))//最后一列，加\n
                {
                    colHeaders += dt.Columns[i].Caption.ToString() + "\n";
                }
                else
                {
                    colHeaders += dt.Columns[i].Caption.ToString() + "\t";
                }
            }
            strText += colHeaders;
            //向HTTP输出流中写入取得的数据信息

            //逐行处理数据 
            foreach (DataRow row in myRow)
            {
                //当前行数据写入HTTP输出流，并且置空ls_item以便下行数据   
                for (i = 0; i < cl; i++)
                {
                    if (i == (cl - 1))//最后一列，加\n
                    {
                        ls_item += row[i].ToString() + "\n";
                    }
                    else
                    {
                        ls_item += row[i].ToString() + "\t";
                    }
                }
                strText += ls_item;
                ls_item = "";
            }

            return strText;
        }