protected virtual void OnPreviewDragDropCore(
RadListElement targetList,
RadListVisualItem targetElement)
{
int num = targetList.Items.Count - 1;
if (targetElement != null)
num = targetList.Items.IndexOf(targetElement.Data);
if (this.draggedItem.Owner != targetList)
++num;
RadListElement owner = this.draggedItem.Owner;
IList<RadListDataItem> radListDataItemList = (IList<RadListDataItem>) new List<RadListDataItem>(owner.SelectedItems.Count);
foreach (RadListDataItem selectedItem in (IEnumerable<RadListDataItem>) owner.SelectedItems)
radListDataItemList.Add(selectedItem);
owner.BeginUpdate();
foreach (RadListDataItem radListDataItem in (IEnumerable<RadListDataItem>) radListDataItemList)
{
radListDataItem.Selected = radListDataItem.Active = false;
owner.Items.Remove(radListDataItem);
}
owner.EndUpdate();
targetList.BeginUpdate();
foreach (RadListDataItem radListDataItem in (IEnumerable<RadListDataItem>) radListDataItemList)
{
targetList.Items.Insert(num++, radListDataItem);
radListDataItem.Selected = radListDataItem.Active = true;
}
targetList.EndUpdate();
}
protected virtual void OnPreviewDragDropCore(RadListVisualItem dragedItem, RadListElement targetList, RadListVisualItem targetElement)
{
int index = targetList.Items.IndexOf(targetElement.Data);
Debug.Assert(index != -1);
RadListElement dragedListView = dragedItem.Data.Owner;
IList <RadListDataItem> itemsToMove = new List <RadListDataItem>(dragedListView.SelectedItems.Count);
foreach (RadListDataItem item in dragedListView.SelectedItems)
{
itemsToMove.Add(item);
}
dragedListView.BeginUpdate();
foreach (RadListDataItem item in itemsToMove)
{
dragedListView.Items.Remove(item);
}
dragedListView.EndUpdate();
targetList.BeginUpdate();
foreach (RadListDataItem item in itemsToMove)
{
targetList.Items.Insert(index++, item);
}
targetList.EndUpdate();
}
