Change ListView RowHeight programmatically in Xamarin Android

public override View GetView(int position, View convertView, ViewGroup parent)
        {
            View view = convertView ?? this.context.LayoutInflater.Inflate(Android.Resource.Layout.ActivityListItem, null);

            if (view.LayoutParameters == null)
            {
                view.LayoutParameters = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MatchParent, 300);
            }
            else
            {
                view.LayoutParameters.Height = 300;
            }

            ...other code here...

            return view;
        }