public void GetNextPage()
{
if (CurrentIndex >= AllProducts.Count)
{
return;
}
var diff = AllProducts.Count - CurrentIndex;
if (diff > PageSize)
{
diff = PageSize;
}
CurrentProducts.Clear();
CurrentProducts = AllProducts.GetRange((int)CurrentIndex, (int)diff);
CurrentIndex += diff;
}
public void GetPreviousPage()
{
if (CurrentIndex <= 1)
{
return;
}
var diff = CurrentIndex - PageSize;
if (diff < 0)
{
diff = CurrentIndex;
}
else
{
diff = PageSize;
}
CurrentProducts.Clear();
CurrentProducts = AllProducts.GetRange((int)(CurrentIndex - diff), (int)diff);
CurrentIndex -= diff;
}