获取数据方（usercontrol111）声明

 public Func<Tuple<int, int>> GetCurrentResult { get; set; }

获取数据方调用

 var val = GetCurrentResult?.Invoke() ?? new Tuple<decimal, decimal>(0, 0);

数据发送方声明与赋值

 usercontrol111.GetCurrentResult = TransCurrentResult;

数据发送方赋值

private Tuple<decimal, decimal> TransCurrentResult()
{return new Tuple<decimal, decimal>(2m,8m);
}