Call WebAPI Using HTTPClient

protected void Button2_Click(object sender, EventArgs e)
       {
           HttpClient client = new HttpClient();
           client.BaseAddress = new Uri(&"site name";);

           // Add an Accept header for JSON format.
           client.DefaultRequestHeaders.Accept.Add(
               new MediaTypeWithQualityHeaderValue("application/json"));

               HttpResponseMessage response = client.GetAsync("user/view.json?api_public=M01&api_secret=1;api_name=ezd").Result;

               if (response.IsSuccessStatusCode)
               {
                   // Parse the response body. Blocking!
                   string matchIdToFind = "26";
                   var product = response.Content.ReadAsAsync<JObject>().Result;
                   JObject match = product;

                   GridView1.DataSource = match;

                   GridView1.DataBind();
               }
               else
               {
                   TextBox3.Text = "errror";
               }



       }