【.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；

public void ProcessRequest(HttpContext context)
 2 {
            string action = context.Request["action"].ToString();
            if (action == "download")
            {
                string fileName = "资源统计详细信息.txt";//客户端保存的文件名
                string filePath = context.Server.MapPath("资源统计详细信息.txt");//服务端文件路径

                //以字符流的形式下载文件
                FileStream fs = new FileStream(filePath, FileMode.Open);
                byte[] bytes = new byte[(int)fs.Length];
                fs.Read(bytes, 0, bytes.Length);
                fs.Close();

                #region 处理中文文件名乱码问题（ie及firefox下）
                Encoding encoding;
                string outputFileName = null;
                string browser = HttpContext.Current.Request.UserAgent.ToUpper();
                if (browser.Contains("MS") == true && browser.Contains("IE") == true)
                {
                    outputFileName = HttpUtility.UrlEncode(fileName);
                    encoding = System.Text.Encoding.Default;
                }
                else if (browser.Contains("FIREFOX") == true)
                {
                    outputFileName = fileName;
                    encoding = System.Text.Encoding.GetEncoding("GB2312");
                }
                else
                {
                    outputFileName = HttpUtility.UrlEncode(fileName);
                    encoding = System.Text.Encoding.Default;
                } 
                #endregion

                HttpContext.Current.Response.Clear();
                HttpContext.Current.Response.Buffer = true;
                HttpContext.Current.Response.ContentEncoding = encoding;
                HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}.txt", string.IsNullOrEmpty(outputFileName) ? DateTime.Now.ToString("yyyyMMddHHmmssfff") : outputFileName));
                HttpContext.Current.Response.BinaryWrite(bytes);
                HttpContext.Current.Response.End();

            }
}

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