//127.0.0.1/Myfriends/index.php?pseudo=rabah&action=info&what=p&value=072345321 public async void ContactInfo() { ContactPicker x = new ContactPicker(); IReadOnlyList <ContactInformation> contacts = await x.PickMultipleContactsAsync(); if (contacts == null) { return; } HttpClient client = new HttpClient(); string server = UserSingleton.server; server += "api.php?action=info"; server += "&pseudo=" + usercurrent.Token; foreach (ContactInformation cont in contacts) { foreach (ContactField field in cont.PhoneNumbers) { server += "&what[]=ContactPhone&value[]=" + cont.Name + "&value2[]" + field.Value; } foreach (ContactField field in cont.Emails) { server += "&what[]=ContactEmail&value[]=" + cont.Name + "&value2[]" + field.Value; } } try { string res = await client.GetStringAsync(server); } catch { MessageDialog c = new MessageDialog("Erreur Server ne repond pas "); } }