Correct Syntax for Webapi

Question

Goal:
The url should be "https://localhost:44353/api/Authentication/Validate?a=aa&b=bb"

Problem:
What syntax code am I missing in relation to web api?

Thank you!

// https://localhost:44353/api/Authentication/Validate/c/c
[HttpGet("Validate/{a}/{b}")]
public bool Validate(string a, string b)
{
    return false;
}

Answer 1

Query parameters don't need to be specified in the route pattern. The following should be enough to achieve the goal URL:

[HttpGet("Validate")]
public IActionResult Validate(string a, string b)
{
    return Ok(false);
}