User.Identity.IsAuthenticated是成功登录后假 [英] User.Identity.IsAuthenticated is false after successful login

问题描述

我需要一个成功登录后直接获取用户标识GUID。下面code不工作：

I need to get the UserId Guid directly after a successful login. The following code doesn't work:

if (Membership.ValidateUser(txtUsername.Value, txtPassword.Value))
{
    FormsAuthentication.SignOut();
    FormsAuthentication.SetAuthCookie(txtUsername.Value, true);

    if (HttpContext.Current.User.Identity.IsAuthenticated)
    {
        // doesn't run
        Guid puk = (Guid)Membership.GetUser().ProviderUserKey;            
    }
}

以下code不工作：

The following code does work:

if (Membership.ValidateUser(txtUsername.Value, txtPassword.Value))
{
    FormsAuthentication.SignOut();
    FormsAuthentication.SetAuthCookie(txtUsername.Value, true);

    MembershipUser user = Membership.GetUser(txtUsername.Value);

    if (user != null)
    {
        Guid puk = (Guid)user.ProviderUserKey;
    }
}

为什么会出现这种情况？是有什么更多的事情要做，除了 SetAuthCookie ？

推荐答案

由于当你调用 FormsAuthentication.SetAuthCookie（txtUsername.Value，真实）; 您存储的关键客户端的Cookie。为此，您需要做的用户的响应。
和 HttpContext.Current.User.Identity 来充满饼干你需要多一个请求。

Because when you call FormsAuthentication.SetAuthCookie(txtUsername.Value, true); you store the key on the client's cookies. For this you need to do a response to the user. And for HttpContext.Current.User.Identity to be filled with cookie you need one more request.

在短期你的计划是这样的：

In short your scheme looks like this:

1. 客户端发送他的用户名和密码。

1. Client sends his UserName and Password.

服务器获取并检查它。如果它们是有效的服务器发送设置Cookie 头给客户端。

Server gets and checks it. If they are valid the server sends Set-Cookie header to the client.

客户端接收并存储。对于每个请求客户机发送的cookie回服务器

Client receives and stores it. For each request client sends cookies back to the server.

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