.Net核心MVC中如何从OpenIdConnect令牌响应中提取状态参数

services.AddAuthentication(options =>
{
    options.DefaultScheme = CookieAuthenticationDefaults.AuthenticationScheme;
    options.DefaultChallengeScheme = OpenIdConnectDefaults.AuthenticationScheme;
})
.AddCookie()
.AddOpenIdConnect(options =>
{
    options.ClientId = "your_client_id";
    options.ClientSecret = "your_client_secret";
    options.Authority = "https://your_authority_url";
    options.ResponseType = "code";
    options.Scope.Add("openid");
    options.Scope.Add("profile");
    options.CallbackPath = "/signin-oidc";
    options.SaveTokens = true;
});

var state = HttpContext.Request.Query["state"];