protected void Page_Load()
{
// Process the result from an auth provider in the request
ProviderName = OpenAuthProviders.GetProviderNameFromRequest(Request);
if (String.IsNullOrEmpty(ProviderName))
{
Response.Redirect("~/Account/Login");
}
if (!IsPostBack)
{
IAuthenticationManager manager = new AuthenticationIdentityManager(new IdentityStore(new ApplicationDbContext())).Authentication;
var auth = Context.GetOwinContext().Authentication;
ClaimsIdentity id = manager.GetExternalIdentity(auth);
IdentityResult result = manager.SignInExternalIdentity(auth, id);
if (result.Success)
{
OpenAuthProviders.RedirectToReturnUrl(Request.QueryString["ReturnUrl"], Response);
}
else if (User.Identity.IsAuthenticated)
{
result = manager.LinkExternalIdentity(id, User.Identity.GetUserId());
if (result.Success)
{
OpenAuthProviders.RedirectToReturnUrl(Request.QueryString["ReturnUrl"], Response);
}
else
{
AddErrors(result);
return;
}
}
else
{
userName.Text = id.Name;
}
}
}
