protected override void OnBeforeSave()
{
base.OnBeforeSave();
if (base.IsNew)
{
if (Guid.Empty.Equals(this.ParentGroupClassId))
{
throw new NotSupportedException("A new Task group entry needs to have its ParentGroupClassId set.");
}
byte[] nodeBefore = null;
if (this.parentGroup != null)
{
ReadOnlyCollection <TaskGroupEntryInfo> childTaskFolders = this.parentGroup.GetChildTaskFolders();
if (childTaskFolders.Count > 0)
{
nodeBefore = childTaskFolders[childTaskFolders.Count - 1].Ordinal;
}
}
else
{
bool flag;
nodeBefore = FolderTreeData.GetOrdinalValueOfFirstMatchingNode(base.MailboxSession, TaskGroupEntry.FindLastTaskFolderOrdinalSortOrder, (IStorePropertyBag row) => TaskGroup.IsFolderTreeData(row) && TaskGroup.IsTaskSection(row) && TaskGroup.IsTaskFolderInGroup(row, this.ParentGroupClassId), TaskGroup.TaskInfoProperties, out flag);
}
base.SetNodeOrdinalInternal(nodeBefore, null);
}
}