C#文件下载实例代码（适用于各个浏览器）

本文给大家分享一段实例代码关于css实现文件下载功能，需要的的朋友参考下吧

1、cs代码

				?

									public void DownFile(string filePath ,string fileName )

									{

									 // filePath 文件路径 例如：/File/记录.xlsx 

									 // fileName 文件名称 例如：记录.xlsx （要后缀哦）

									Encoding encoding; // 申明编码

									string outputFileName; // 输出名字

									Debug.Assert(HttpContext.ApplicationInstance.Request.UserAgent != null, "HttpContext.ApplicationInstance.Request.UserAgent != null");

									string browser = HttpContext.ApplicationInstance.Request.UserAgent.ToUpper();

									// 微软的浏览器和ie过滤

									if (browser.Contains("MS") && browser.Contains("IE"))

									{

									outputFileName = HttpUtility.UrlEncode(filePath);

									encoding = Encoding.Default;

									}

									//火狐

									else if (browser.Contains("FIREFOX"))

									{

									outputFileName = fileName;

									encoding = Encoding.GetEncoding("GB2312");

									}

									else

									{

									outputFileName = HttpUtility.UrlEncode(fileName);

									encoding = Encoding.Default;

									}

									string absoluFilePath = Server.MapPath(filePath); //获取上传文件路径

									FileStream fs = new FileStream(absoluFilePath, FileMode.Open);

									byte[] bytes = new byte[(int)fs.Length];

									fs.Read(bytes, 0, bytes.Length);

									fs.Close(); //关闭流，释放资源

									HttpContext.ApplicationInstance.Response.Clear();

									HttpContext.ApplicationInstance.Response.Buffer = true;

									HttpContext.ApplicationInstance.Response.ContentEncoding = encoding;

									HttpContext.ApplicationInstance.Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}", string.IsNullOrEmpty(outputFileName) ? DateTime.Now.ToString("yyyyMMddHHmmssfff") : outputFileName));

									Response.BinaryWrite(bytes);

									Response.Flush();

									HttpContext.ApplicationInstance.Response.End();

									}