/// <summary>
/// 将form的action换成绝对路径
/// </summary>
public static void FormatForm()
{
((System.Web.UI.Page)HttpContext.Current.CurrentHandler).Form.Action = RequestUtil.GetVirPath();
}
/// <summary>
/// 在网页页面返回空图片
/// </summary>
public static void ImageNoSign()
{
Image(RequestUtil.GetPath("~/Img/NoPic.jpg"));
}