Asp.Net超大文件上传问题解决

 foreach (UploadedFile file in RadUploadContext.Current.UploadedFiles)
            {
                string Path = Server.MapPath(@"~/Uploads");
                //如果路径不存在，则创建
                if (System.IO.Directory.Exists(Path) == false)
                {
                    System.IO.Directory.CreateDirectory(Path);
                }
                //组合路径，file.GetName()取得文件名
                string oldfilename = file.GetName().ToString();
                //如果对上传后的文件进行重新命名，根据guid进行命名，则放开下面二行代码
                //string fileType = oldfilename.Substring(oldfilename.LastIndexOf("."));
                //string newfilename = Guid.NewGuid().ToString("N") + fileType;
                //Path = Path + "/" + file.GetName().ToString();
                Path = Path + "/" + oldfilename;
                //保存
                file.SaveAs(Path, true);
                string newurl = @"~/Uploads/" + oldfilename;              
            }