Calling an API on Xamarin getting Bad Request - asp.net

Question

So, I'm new to Xamarin and I'm trying to call API. I didn't have any trouble when I want to get data from a wheather api. But when I try to call my own API which is created with ASP.NET RESTFull and help of internet.
So this is my code. I can get what I need when I use ;
http://localhost:1658/api/person
on my browser, it works perfectly. But when I use;
string querystring = "http://10.0.2.2:1658/api/person";
JContainer results = await GetDataFromService(querystring);
}
public static async Task<JContainer> GetDataFromService(string queryString)
{
HttpClient client = new HttpClient();
var response = await client.GetAsync(queryString);
JContainer data = null;
if (response.IsSuccessStatusCode)
{
string json = response.Content.ReadAsStringAsync().Result;
data = (JContainer)JsonConvert.DeserializeObject(json);
}
return data;
}
it didn't work.
This is my API codes:
// This code piece in PersonController.cs
// GET: api/Person
public ArrayList Get()
{
PersonPersistance pp = new PersonPersistance();
return pp.getPersons();
}
// This piece of code in PersonPersistance.cs
public Person getPerson(long ID)
{
Person p = new Person();
//MySql.Data.MySqlClient.MySqlDataReader MSR = null;
SqlDataReader MSR = null;
string selectquery = "select * from person where Id="+ID.ToString();
//MySql.Data.MySqlClient.MySqlCommand cmd = new MySql.Data.MySqlClient.MySqlCommand(selectquery,conn);
SqlCommand cmd = new SqlCommand(selectquery, conn);
//MSR = cmd.ExecuteReader();
MSR = cmd.ExecuteReader();
if(MSR.Read())
{
p.Id = MSR.GetInt32(0);
p.FirstName = MSR.GetString(1);
p.LastName = MSR.GetString(2);
p.Pay = MSR.GetInt32(3);
p.BeginDay = MSR.GetDateTime(4);
p.EndDate = MSR.GetDateTime(5);
return p;
}
else
{
return null;
}
}

Answer 1

Try adding await to your ReadAsStringAsync():
public static async Task<JContainer> GetDataFromService(string queryString)
{
HttpClient client = new HttpClient();
var response = await client.GetAsync(queryString);
JContainer data = null;
if (response.IsSuccessStatusCode)
{
string json = await response.Content.ReadAsStringAsync();
data = JsonConvert.DeserializeObject<JContainer>(json);
}
return data;
}