1 context.Response.ContentType = "text/plain";
 2             context.Response.Charset = "utf-8";
 3             HttpPostedFile file = context.Request.Files["Filedata"];
 4             int i = file.ContentLength;
 5             string uploadPath =
 6                 HttpContext.Current.Server.MapPath(@context.Request["folder"]) + "\\";
 7 
 8             if (file != null)
 9             {
10                 if (!Directory.Exists(uploadPath))
11                 {
12                     Directory.CreateDirectory(uploadPath);
13                 }  
14 
15                 file.SaveAs(uploadPath + file.FileName);
16                 //下面这句代码缺少的话，上传成功后上传队列的显示不会自动消失
17                  context.Response.Write("1");
18             }
19             else
20             {
21                 context.Response.Write("0");
22             }