public class StaffFile FullAuditedAggregateRootlong IMultiTenant 租户 public Guid TenantId get; set; summary 姓名 summary public string Name get; set;

The line of code CreateMap<SaveStaffFileDto, StaffFile>().ForMember(dest => dest.Job.Id, opt => opt.MapFrom(src => $"{src.Id}{src.JobId}")); is used to map the properties of the SaveStaffFileDto class to the properties of the StaffFile class.

In this case, it is mapping the JobId property of the SaveStaffFileDto class to the Id property of the Job property of the StaffFile class. The mapping is done by concatenating the Id property of the SaveStaffFileDto class with the JobId property of the SaveStaffFileDto class