【.net】在ASP.NET中，IE与Firefox下载文件名中带中文汉字的文件，文件名乱码的问题

#问题：客户端为ie或Firefox，服务端为asp.net时，下载文件名中包含中文汉字时，下载下来的文件的文件名是乱码；

#解决方案：

　　示例代码：下载名称中带汉字的文件；

 1 public void ProcessRequest(HttpContext context)
 2 {
 3             string action = context.Request["action"].ToString();
 4             if (action == "download")
 5             {
 6                 string fileName = "资源统计详细信息.txt";//客户端保存的文件名
 7                 string filePath = context.Server.MapPath("资源统计详细信息.txt");//服务端文件路径
 8 
 9                 //以字符流的形式下载文件
10                 FileStream fs = new FileStream(filePath, FileMode.Open);
11                 byte[] bytes = new byte[(int)fs.Length];
12                 fs.Read(bytes, 0, bytes.Length);
13                 fs.Close();
14 
15                 #region 处理中文文件名乱码问题（ie及firefox下）
16                 Encoding encoding;
17                 string outputFileName = null;
18                 string browser = HttpContext.Current.Request.UserAgent.ToUpper();
19                 if (browser.Contains("MS") == true && browser.Contains("IE") == true)
20                 {
21                     outputFileName = HttpUtility.UrlEncode(fileName);
22                     encoding = System.Text.Encoding.Default;
23                 }
24                 else if (browser.Contains("FIREFOX") == true)
25                 {
26                     outputFileName = fileName;
27                     encoding = System.Text.Encoding.GetEncoding("GB2312");
28                 }
29                 else
30                 {
31                     outputFileName = HttpUtility.UrlEncode(fileName);
32                     encoding = System.Text.Encoding.Default;
33                 } 
34                 #endregion
35 
36                 HttpContext.Current.Response.Clear();
37                 HttpContext.Current.Response.Buffer = true;
38                 HttpContext.Current.Response.ContentEncoding = encoding;
39                 HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}.txt", string.IsNullOrEmpty(outputFileName) ? DateTime.Now.ToString("yyyyMMddHHmmssfff") : outputFileName));
40                 HttpContext.Current.Response.BinaryWrite(bytes);
41                 HttpContext.Current.Response.End();
42 
43             }
44 }

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