/// <summary>
/// 获取用户登录信息。
/// </summary>
/// <param name="loginProvider">登录提供者名称。</param>
/// <param name="providerKey">登录唯一键。</param>
/// <param name="cancellationToken">取消标志。</param>
/// <returns>返回当前用户登录信息。</returns>
protected override Task <TUserLogin> FindUserLoginAsync(string loginProvider, string providerKey, CancellationToken cancellationToken)
{
return(UserLoginContext.FindAsync(
x => x.LoginProvider == loginProvider && x.ProviderKey == providerKey,
cancellationToken));
}
