如何检查用户是否“登录”？

我在我的 ASP.NET 应用程序中使用以下方法进行表单身份验证

FormsAuthentication.RedirectFromLoginPage(txtUsername.Text, true);

如何检查用户是否已登录？如何获取已登录用户的用户名？

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小开

Easiest way to check if they are authenticated is Request.User.IsAuthenticated I think (from memory)

小开

最佳答案

I managed to find the correct one. It is below.

bool val1 = System.Web.HttpContext.Current.User.Identity.IsAuthenticated

EDIT

The credit of this edit goes to @Gianpiero Caretti who suggested this in comment.

bool val1 = (System.Web.HttpContext.Current.User != null) && System.Web.HttpContext.Current.User.Identity.IsAuthenticated

小开

The simplest way:

if (Request.IsAuthenticated) ...

小开

if (User.Identity.IsAuthenticated)
{
Page.Title = "Home page for " + User.Identity.Name;
}
else
{
Page.Title = "Home page for guest user.";
}