get value from web api

See more:

C#

ASP.NET

API

my controller name is "testController" and my api as

[HttpGet]
     [ActionName("test_api")]
     public string test_api(ret request)
     {
         return "nesreen";
     }

and I want to call this api from another project

so I use this

 public static string callapi()
        {


            HttpClient client = new HttpClient();
            client.BaseAddress = new Uri("http://localhost:52559/");
            //client.DefaultRequestHeaders.Add("appkey", "myapp_key");
            client.DefaultRequestHeaders.Accept.Add(
               new MediaTypeWithQualityHeaderValue("application/json"));

            HttpResponseMessage response = client.GetAsync("api/test").Result;
            if (response.IsSuccessStatusCode)
            {
   // i want here to extract the string that returned from my api

            }
}

but I still cant call my controller and name of my web api


please help me