xamarin 값 저장

protected void retrieveset()
{
//retreive
var prefs = Application.Context.GetSharedPreferences("MyApp", FileCreationMode.Private);
var somePref = prefs.GetString("PrefName", null);

//Show a toast
RunOnUiThread(() => Toast.MakeText(this, somePref, ToastLength.Long).Show());

}
protected void saveset(){

//store
var prefs = Application.Context.GetSharedPreferences("MyApp", FileCreationMode.Private);
var prefEditor = prefs.Edit();
prefEditor.PutString("PrefName", "Some value");
prefEditor.Commit();

}