[ASP.NET] 下載PDF檔案

 private void DownloadFile(string strFile_Path)
 {
        string strFilePath = Server.MapPath(strFile_Path);

        if (strFilePath.Split('\\').Length != 0)
        {
            string strFileName = strFilePath.Split('\\')[strFilePath.Split('\\').Length - 1];

            //中文檔名作轉換
            //strFileName = HttpUtility.UrlEncode(strFileName, System.Text.Encoding.UTF8);

            FileStream fs = new FileStream(strFilePath, FileMode.Open);
            Byte[] byBuf = new Byte[fs.Length];

            fs.Read(byBuf, 0, Convert.ToInt32(fs.Length));
            fs.Close();
            fs.Dispose();

            Response.Clear();
            Response.ClearHeaders();
            Response.Buffer = true;
            //轉換文字檔編碼格式用，但本次輸出無文字檔，故註解此段
            //Response.ContentEncoding = parEncoding;
            Response.AddHeader("content-disposition", "attachment; filename=" + strFileName);

            Response.ContentType = "application/octet-stream";
            Response.BinaryWrite(byBuf);
            Response.End();
        }
 }

參考資料:
http://gogo1119.pixnet.net/blog/post/26900755-%5Basp.net%5D-%E7%84%A1%E7%B6%B2%E5%9D%80%E7%9A%84%E6%AA%94%E6%A1%88%E4%B8%8B%E8%BC%89