How to call one controller from another controller in asp.net core api

Question

Hi, this description may weired! but as a POC I want to do something like ..

 

I have an Employee controller .this controller is concidered as main controller and having a methode which fetch all the employee details based on their grade.Now i have to create 2 microservices for my project.Age and Gender is the 2 seperate MS.I want to know the correct way of creating/implimenting these microservices.

 

In Employee controller

[HttpPost("api/Employee/GetallEmployee")]
public async Task GetallEmployee(input)
{
//i have to get merged json result here from below controllers(2 microservices having seperate db and seperate controller) and this url will connect with API gateway
// I should merge these 2 result( using newtonsoft i can do it)
//the merged json responce will concidered as main api
//is this the correct way to create microservices?
mergedresult= result1+result2
}

But in this i have some microservices like Age and Gender means for creating microservices in to my solution i have created seperate 2 controller like AgeController and GenderController

 

But the challenge i am facing is i have to call the main api only api/Employee/GetallEmployee

by using this i have to call both below controller and in main methode i shud combain the 2 joson results.Anyone please help me

 

AgeController

[HttpPost("api/Age/Ageofall")]
public async Task Ageofall(input)
{
var result1 = await _getemployee.getalldetails(input);
return new JsonResult(result1);
}
GenderController
[HttpPost("api/Gender/Genderofall")]
public async Task Genderofall(input)
{
var result2 = await _getemployee.getalldetails(input);
return new JsonResult(result2);
}

Please suggest the best practice to create microservices if i am doing wrong here..Thanks