PowerArgs.Cli.Grid.PageDown C# (CSharp) Method

        public void PageDown()
        {
            if (SelectedIndex != visibleRowOffset+DataView.Items.Count-1)
            {
                SelectedIndex = visibleRowOffset+DataView.Items.Count - 1;
            }
            else
            {
                visibleRowOffset = visibleRowOffset + DataView.Items.Count - 1;
                SelectedIndex = visibleRowOffset;
                this.query.Skip = visibleRowOffset;
                DataView = DataSource.GetDataView(query);
            }

            if (SelectedIndex - visibleRowOffset < DataView.Items.Count)
            {
                SelectedItem = DataView.Items[SelectedIndex - visibleRowOffset];
            }
            else if (SelectedIndex > 0)
            {
                SelectedIndex--;
                SelectedItem = DataView.Items[SelectedIndex - visibleRowOffset];
            }
        }