C#文件下载（适用于各个浏览器）
1、cs代码
1 public void DownFile(string filePath ,string fileName ) 2 { 3 // filePath 文件路径 例如：/File/记录.xlsx 4 5 // fileName 文件名称 例如：记录.xlsx （要后缀哦） 6 Encoding encoding; // 申明编码 7 string outputFileName; // 输出名字 8 Debug.Assert(HttpContext.ApplicationInstance.Request.UserAgent != null, "HttpContext.ApplicationInstance.Request.UserAgent != null"); 9 string browser = HttpContext.ApplicationInstance.Request.UserAgent.ToUpper(); 10 // 微软的浏览器和ie过滤 11 if (browser.Contains("MS") && browser.Contains("IE")) 12 { 13 outputFileName = HttpUtility.UrlEncode(filePath); 14 encoding = Encoding.Default; 15 } 16 //火狐 17 else if (browser.Contains("FIREFOX")) 18 { 19 outputFileName = fileName; 20 encoding = Encoding.GetEncoding("GB2312"); 21 } 22 else 23 { 24 outputFileName = HttpUtility.UrlEncode(fileName); 25 encoding = Encoding.Default; 26 } 27 28 string absoluFilePath = Server.MapPath(filePath); //获取上传文件路径 29 FileStream fs = new FileStream(absoluFilePath, FileMode.Open); 30 byte[] bytes = new byte[(int)fs.Length]; 31 fs.Read(bytes, 0, bytes.Length); 32 fs.Close(); //关闭流，释放资源 33 HttpContext.ApplicationInstance.Response.Clear(); 34 HttpContext.ApplicationInstance.Response.Buffer = true; 35 HttpContext.ApplicationInstance.Response.ContentEncoding = encoding; 36 HttpContext.ApplicationInstance.Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}", string.IsNullOrEmpty(outputFileName) ? DateTime.Now.ToString("yyyyMMddHHmmssfff") : outputFileName)); 37 Response.BinaryWrite(bytes); 38 Response.Flush(); 39 HttpContext.ApplicationInstance.Response.End(); 40 }
2、html代码
前端HTML 写一个a标签就好：如 <a href='DownFile' target='_blank'>文件下载</a>
