private void SetFilterFlag(ref FilterField flags, FilterField field, bool value, [CallerMemberName] string propertyName = "")
{
if (value && !flags.HasFlag(field))
{
flags |= field;
}
else if (!value && flags.HasFlag(field))
{
flags &= ~field;
}
else
{
return;
}
this.NotifyPropertyChanged(propertyName);
this.NotifyPropertyChanged("Description");
}