StackOverflow 文档 C# Language 教程 运算符 集体成员运算符会员访问 集体成员运算符会员访问 Created: November-22, 2018 var now = DateTime.UtcNow; //accesses member of a class. In this case the UtcNow property. 类成员操作符函数调用空融合运算符