dynamic attributes and values in httpclient getasyn

I have to get dynamic attributes and values as parameters in httpclient getasync() from angular.no matter what ever attributes and values in params i should be able to get it in httpclient getasync(). i wote a code like below

[HttpGet]
public async Task QuickSearch([FromUri] queryString)
{
Debugger.Launch();
try
{
using (HttpClient client = new HttpClient())
{
client.DefaultRequestHeaders.Accept.Clear();
//string queryString = "";
//if (!string.IsNullOrEmpty(param.ssn))
//{
// queryString = "?ssn=" + param.ssn;
//}
//if (!string.IsNullOrEmpty(param.applicant))
//{
// queryString = "?applicant=" + param.applicant;
//}
HttpResponseMessage response = await client.GetAsync("http://localhost:8080/document/quicksearch/" + queryString);
if (response.IsSuccessStatusCode)
{
Console.Write("Success");
}
else
{
Console.Write("Failure");
}
return response;
}
}
catch (Exception e)
{
throw e;
}
}