IF not entering condition

Question

Debugging the system code I am maintaining, but I noticed that "if (_start + 15 >= _Count) Return;" does not allow the code to continue, it goes back to Return. What would be the suggestion to resolve this? Since it should enter the condition and perform pagination, changing the grid data.

 case "btnNavNext":
{
var count = 0;
if (_start + 15 >= _count) return;
_currentPage++;
var data = getCaptureValue2(out count, _start + 30, _limit);
StoreSales.PageSize = count;

GridComercio.GetStore().DataSource = data;
GridComercio.GetStore().DataBind();
}
break;