internal void InvalidatePinnedRows()
{
this.ViewElement.TopPinnedRows.DisposeChildren();
this.ViewElement.BottomPinnedRows.DisposeChildren();
if (this.ViewInfo.ShowHeaderRow)
{
this.ViewElement.TopPinnedRows.Children.Add((RadElement)this.RowScroller.ElementProvider.GetElement(-1, (object)null));
}
if (this.ViewInfo.ShowNewRow)
{
this.ViewElement.TopPinnedRows.Children.Add((RadElement)this.RowScroller.ElementProvider.GetElement(-2, (object)null));
}
if (this.ViewInfo.ShowFilterRow)
{
this.ViewElement.TopPinnedRows.Children.Add((RadElement)this.RowScroller.ElementProvider.GetElement(-3, (object)null));
}
foreach (int topPinnedItem in this.RowsViewState.TopPinnedItems)
{
VirtualGridRowElement element = (VirtualGridRowElement)this.RowScroller.ElementProvider.GetElement(topPinnedItem, (object)null);
this.ViewElement.TopPinnedRows.Children.Add((RadElement)element);
element.Attach(topPinnedItem, (object)null);
}
foreach (int bottomPinnedItem in this.RowsViewState.BottomPinnedItems)
{
VirtualGridRowElement element = (VirtualGridRowElement)this.RowScroller.ElementProvider.GetElement(bottomPinnedItem, (object)null);
this.ViewElement.BottomPinnedRows.Children.Add((RadElement)element);
element.Attach(bottomPinnedItem, (object)null);
}
}
protected override IVirtualizedElement <int> UpdateElement(
int position,
int data)
{
if (this.tableElement == null)
{
return(base.UpdateElement(position, data));
}
object elementContext = this.GetElementContext();
if (position < this.Children.Count)
{
IVirtualizedElement <int> element = (IVirtualizedElement <int>) this.Children[position];
if (this.ElementProvider.ShouldUpdate(element, data, elementContext))
{
if (this.tableElement.IsRowExpanded(data))
{
for (int indexFrom = position; indexFrom < this.Children.Count; ++indexFrom)
{
VirtualGridRowElement child = this.Children[indexFrom] as VirtualGridRowElement;
if (child != null && child.IsChildViewInitialized && child.IsCompatible(data, elementContext))
{
child.Detach();
child.Attach(data, elementContext);
if (indexFrom != position)
{
this.Children.Move(indexFrom, position);
}
return((IVirtualizedElement <int>)child);
}
}
if ((this.ElementProvider as VirtualRowsElementProvider).TryGetElementWithChildView(data, elementContext, out element))
{
this.Children.Insert(position, (RadElement)element);
return(element);
}
}
else
{
for (int indexFrom = position; indexFrom < this.Children.Count; ++indexFrom)
{
VirtualGridRowElement child = this.Children[indexFrom] as VirtualGridRowElement;
if (child != null && !child.IsChildViewInitialized)
{
child.Detach();
child.Attach(data, elementContext);
if (indexFrom != position)
{
this.Children.Move(indexFrom, position);
}
return((IVirtualizedElement <int>)child);
}
}
if ((this.ElementProvider as VirtualRowsElementProvider).TryGetElementWithoutChildView(data, elementContext, out element))
{
this.Children.Insert(position, (RadElement)element);
return(element);
}
}
}
}
return(base.UpdateElement(position, data));
}