How should I pass multiple parameters to an ASP.Net Web API GET?

I think the easiest way is to simply use AttributeRouting.

It’s obvious within your controller, why would you want this in your Global WebApiConfig file?

Example:

    [Route("api/YOURCONTROLLER/{paramOne}/{paramTwo}")]
    public string Get(int paramOne, int paramTwo)
    {
        return "The [Route] with multiple params worked";
    }

The {} names need to match your parameters.

Simple as that, now you have a separate GET that handles multiple params in this instance.