//上传图片
public void UpdataImage()
{
 //获取选择的文件
 string fileName = fudImage.FileName;
 //获取后缀名
 string fileExt = Path.GetExtension(fileName);
 if (fileExt != ".jpg")
 {
  return;
 }
 //获取服务器端得上传的路径
 string serverPath = Server.MapPath("/Web/images");
 //生成文件夹
 string createDirectory = serverPath + "\\" + "Card";
 fudImage.SaveAs(createDirectory + "\\" + fileName);
}
//删除文件
public void DelFile(string path)
{
 System.IO.FileInfo file = new FileInfo(path);
 if (file.Exists)
 {
  file.Delete();
 }
}