private void LoadNextPageIfNeeded()
{
// If we are less than one page from the end of the currently loaded rows, load the next page
int currentRowIndex = gridView.GetDataSourceRowIndex(gridView.FocusedRowHandle);
// Get the number of visible rows to pre-fetch the data pages.
if (gridVisibleRows == 0)
{
gridVisibleRows = (gridView.ViewRect.Height / gridView.RowHeight);
}
if (currentRowIndex + gridVisibleRows > gridView.DataRowCount - 1)
{
viewModel.ExecuteNextPage();
}
}