protected override void CreateChildElements()
{
base.CreateChildElements();
this.scrollableRows = new ScrollableVirtualRowsContainer();
this.Children.Add((RadElement)this.scrollableRows);
this.topPinnedRows = new StackLayoutElement();
this.topPinnedRows.Orientation = Orientation.Vertical;
this.topPinnedRows.ElementSpacing = -1;
this.Children.Add((RadElement)this.topPinnedRows);
this.bottomPinnedRows = new StackLayoutElement();
this.bottomPinnedRows.Orientation = Orientation.Vertical;
this.bottomPinnedRows.ElementSpacing = -1;
this.Children.Add((RadElement)this.bottomPinnedRows);
}
private float GetParentRowOffset()
{
float num1 = 0.0f;
RadElement parent = this.Parent;
int rowIndex = this.rowIndex;
while (parent != null)
{
ScrollableVirtualRowsContainer virtualRowsContainer = parent as ScrollableVirtualRowsContainer;
VirtualGridRowElement virtualGridRowElement = parent as VirtualGridRowElement;
if (virtualRowsContainer != null)
{
int num2 = -1;
IEnumerator enumerator = ((IEnumerable)virtualRowsContainer.TableElement.RowScroller).GetEnumerator();
try
{
if (enumerator.MoveNext())
{
num2 = (int)enumerator.Current;
}
}
finally
{
(enumerator as IDisposable)?.Dispose();
}
if (num2 != -1)
{
num1 += virtualRowsContainer.ScrollOffset.Height + (float)virtualRowsContainer.TableElement.RowScroller.GetItemOffset(rowIndex) - (float)virtualRowsContainer.TableElement.RowScroller.GetItemOffset(num2) + (float)virtualRowsContainer.TableElement.RowsViewState.GetItemSize(rowIndex, true, false) + virtualRowsContainer.TableElement.ViewElement.TopPinnedRows.DesiredSize.Height;
}
else
{
continue;
}
}
if (virtualGridRowElement != null)
{
rowIndex = virtualGridRowElement.rowIndex;
}
parent = parent.Parent;
}
return(num1);
}