下载文件时遇到的问题。

Question

Response.AppendHeader("Content-Disposition","attachment; filename="+HttpUtility.UrlEncode(strFileName,System.Text.Encoding.UTF8));
Response.WriteFile(filePath);
Response.End();

Answer 1

string path=this.GetFilePath();           //获得文件路径
FileInfo fInfo=new FileInfo(path);
string fname=fInfo.Name;
Response.Clear();
Response.AddHeader("Content-Disposition","attachment;filename="+HttpUtility.UrlEncode(fname));
Response.AddHeader("Content-Length",fInfo.Length.ToString());
Response.ContentType="application/octet-stream";
Response.WriteFile(fInfo.FullName);
Response.Flush();
Response.End();

Answer 2

Response.Flush();   
        Response.AppendHeader("Content-Disposition", "");
        Response.AppendHeader("Content-Length", "0");这里明显错误。  
都开始让用户下载了，如何再修改http头呀