除非纯粹的类型检查,否则使用as转换比is快 // is 转换object obj = GetReferent();if (obj is SomeType)} 相关文章: 2022-12-23 2021-05-28 2022-12-23 2022-12-23 2022-12-23 2021-11-06 2022-01-13 2021-12-11