ASP.NET笔记之文章发布管理小系统案例

                 if (ext == ".jpg" || ext == ".jpeg" || ext == ".gif" || ext == ".png")
                 {
                     Response.Write("sucess");
                     //全路径。根目录
                     fileload.SaveAs(Server.MapPath("~/image/" + fileload.FileName));
                 }
                 else
                 {
                     ClientScript.RegisterStartupScript(GetType(), "alert", "alert('只允许上传jpg/jpeg/gif/png文件');", true);

                     return;
                 }
             }
         }
     }
 }