xamarin Cross Platform Helping Center

Android.Telephony.TelephonyManager mTelephonyMgr;   //Telephone Number    mTelephonyMgr = (Android.Telephony.TelephonyManager)GetSystemService(TelephonyService);   var PhoneNumber = mTelephonyMgr.Line1Number;      //IMEI number    String m_deviceId = mTelephonyMgr.DeviceId;                  //Android ID    String m_androidId = Android.Provider.Settings.Secure.GetString(ContentResolver, Android.Provider.Settings.Secure.AndroidId);                              //WLAN MAC Address                Android.Net.Wifi.WifiManager m_wm...

using System; using System.Collections.Generic; using System.ComponentModel; namespace Timer.Utilities {     public class BaseViewModel : INotifyPropertyChanged     {         public event PropertyChangedEventHandler PropertyChanged;         protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)         {             PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));         }     } }