HttpContext.Current.User.Identity.IsAuthenticated

HttpContext.Current.User.Identity.IsAuthenticated=false;

HttpContext.Current.User.Identity.Name==""

解释:当用户登录时,服务器为确认客户端通过验证要通过cookie向客户端写验证(Authenticat)信息,在登录页面刚验证完成后服务器还没有把cookie 回发到Client,所以会没有值,当服务器第二次Response的时候,就会从客户端读取Cookie,要想有此Cookie还要在web.config文件中配置相应的参数

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<system.web>
    <authentication mode="Forms">
      <forms domain="bokoAdmin" timeout="20" loginUrl="Login.aspx" path="/"></forms>
    </authentication>
<authorization>
      <allow users="*"/>
    </authorization>
<system.web>

程序验证:

          

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  if (Membership.ValidateUser(tbx_username.Text.TrimEnd(), tbx_password.Text.TrimEnd()))
            {
                 
                FormsAuthentication.SetAuthCookie(tbx_username.Text.TrimEnd(), true,FormsAuthentication.FormsCookiePath);
FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(
    1, tbx_username.Text, DateTime.Now, DateTime.Now.AddMinutes(20), false, tbx_username.Text);
                // generate new identity
                FormsIdentity identity = new FormsIdentity(ticket);
                HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, FormsAuthentication.Encrypt(ticket));
                // write to client.
                Response.Cookies.Add(cookie);
                }

其中加粗体为主要语句,有此一句就可以实现HttpContext.Current.User.Identity.IsAuthenticated=true;

authorization节点解决FormsAuthentication.SignOut(); 不起作用的问题

原文地址:https://www.cnblogs.com/ken-admin/p/5826381.html