asp.net 上传文件

  if (FileUpload1.HasFile)
            {
                string fileContentType = FileUpload1.PostedFile.ContentType;
                //限制上传的类型 txt/jpg/word
                if (fileContentType == "text/plain"||"image/jpg"||"application/msword"||"image/gif" )
                {
                    string name = FileUpload1.PostedFile.FileName; // 客户端文件路径
                    FileInfo file = new FileInfo(name);
                    string fileName = file.Name; // 文件名称
                    string webFilePath = Server.MapPath("~/upload/" + fileName); // 服务器端文件路径
                    zsInfo.Word = webFilePath;
                    if (!File.Exists(webFilePath))
                    {
                        try