public static void SetValue <T>(this IUserPreference pref, PrefKeys key, T value)
{
string strKey = key.ToString();
pref.SetValue(strKey, value);
}
public static T GetValue <T>(this IUserPreference pref, PrefKeys key)
{
string strKey = key.ToString();
return(pref.GetValue <T>(strKey, (T)DefaultValues[key]));
}