How to dynamically map two class properties in C#-CodePudding

I have two applications A and B and I created another API utility between them to map the properties dynamically for every client and then send requests. I have properties mapping information in the JSON.

For example, I have two clients.

Client A want to map Employee properties of A application with B Application like below:

Application A Employee Class Application B Employee Class
FirstName LastName <---------> Name
Description <---------> Title
Title <---------> JobTitle

Client B want to map Employee properties of A application with B Application like below:

Application A Employee Class Application B Employee Class
FirstName LastName <---------> Name
Description <---------> JobTitle
Title <---------> Title

I have some other fields which need to map based on the client's requirements.

How can I achieve this? so that I just get the mapping details from the database and map them accordingly

I tried automapper ForMember method but I don't know how to pass the value from database?

CodePudding user response：

Let’s set up the scene, assuming you have the info for the client (A or B) in the Employee records.

DB Entity,

Employee:
  FirstName,
  LastName
  Description,
  Title,
  ClientId

ViewModel,

EmployeeModel:
  Name,
  Title,
  JobTitle

Create custom resolvers,

public class TitleResolver : IValueResolver<Employee, EmployeeModel, string>
{
     public string Resolve(Employee source, EmployeeModel destination, string title, ResolutionContext context)
     {
        if(source.ClienId == "A") // as an example, you could do something different.
           return source.Description;
        return source.Title;
     }
}

 public class JobTitleResolver : IValueResolver<Employee, EmployeeModel, string>
 {
     public string Resolve(Employee source, EmployeeModel destination, string title, ResolutionContext context)
     {
        if(source.ClienId == "A")
           return source.Title;
        return source.Description;
     }
 }

When you configure the mapping,

 var configuration =new MapperConfiguration(cfg => cfg.CreateMap<Employee, EmployeeModel>()
   .ForMember(dest => dest.Title, opt => opt.MapFrom<TitleResolver>())
   .ForMember(dest => dest.JobTitle, opt => opt.MapFrom<JobTitleResolver>()));

Let me know if this makes sense.