Microsoft.AspNetCore.Mvc Controller with same method name but different parameter

How can I have my controller actions get triggered by parameter names.

public IActionResult Test(int a1) ... http://test.com?a1=3

public IActionResult Test(string s1, string s2) http://test.com?s1=3&s2=10

I want the actions to get triggered by the matching parameter name. 

This is how the old web api used to work but since I am doing this with .net core mvc controller I am not able to produce the same results.

Appreciate in advance.