// Here we just clear the token cache, sign out the GraphServiceClient, and end the session with the web app.
public void SignOut()
{
if (Request.IsAuthenticated)
{
// Get the user's token cache and clear it.
string userObjectId = ClaimsPrincipal.Current.FindFirst(ClaimTypes.NameIdentifier).Value;
SessionTokenCache tokenCache = new SessionTokenCache(userObjectId, HttpContext);
tokenCache.Clear(userObjectId);
}
SDKHelper.SignOutClient();
// Send an OpenID Connect sign-out request.
HttpContext.GetOwinContext().Authentication.SignOut(
CookieAuthenticationDefaults.AuthenticationType);
Response.Redirect("/");
}