internal async Task LoadData()
{
var client = new SchoolServiceClient(SchoolServiceClient.EndpointConfiguration.BasicHttpBinding_ISchoolService);
string jsonStringResp = await client.GetUsersAsync();
var listUsers = JsonConvert.DeserializeObject<List<UserDTO>>(jsonStringResp);
_users.Clear();
foreach (var it in listUsers)
{
string uri = string.IsNullOrEmpty(it.imageUri) ?
@"http://www.wageningenur.nl/upload_mm/8/8/e/ee050040-ff95-4b6a-8005-d0089348ba13_student_studeren_bieb_bibliotheek_lezen_640x430_640x430.jpg" :
it.imageUri;
_users.Add(User.CreateUser(it.FirstName, it.SecondName, it.LastName, uri, it.Age, "Student"));
}
}