c#中文件上传(1)

                
                这个是.aspx页面中用来上传文件的接口，适用于App接口
 
                int maxlength = 1024 * 1024 * 3;//3M
                picPath = Server.MapPath(".........");
                HttpFileCollection postfile = Context.Request.Files;
                for (int i = 0; i < postfile.Count; i++)
                {
                    HttpPostedFile file = postfile[i];
                    if (!CheckType(GetExtension(file.FileName).Substring(1)))
                    {
                        r.success = false;
                        r.message = "文件类型不正确，上传失败！";
                    }
                    if (file.ContentLength > maxlength)
                    {
                        r.success = false;
                        r.message = "上传文件的大小超过了3MB的最大容量！请压缩后再上传！";
                    }
                    string strNewPath = DateTime.Now.ToShortDateString().Replace("-", "") + DateTime.Now.ToLongTimeString().Replace(":", "") + DateTime.Now.Millisecond + GetExtension(file.FileName);
                    file.SaveAs(picPath +"/"+ strNewPath);
                    strNewPath = strNewPath.Replace("\", "/");
                    urlPath = picServer + strNewPath;
                    originalname = GetOriginalName(file.FileName);
                    if (originalname == "")
                    {
                        originalname = file.FileName;
                    }
                    string newName = GetOriginalName1(strNewPath);
                    file.SaveAs(Server.MapPath(".") + "/" + Path.GetFileName(file.FileName));
                }