Форум программистов [Powered by Invision Power Board]

Код

public Boolean ShowTree(System.Windows.Forms.TreeView Tree)
        {            
            DB.SelectTask(); //Заполняется датасет
            ParentIndex = 0;
            foreach (DataRow RowTask in DB.DataSetTask.Tables["Task"].Rows) //Ищем начала дерева
            {
                TaskID = (int)RowTask["TaskID"];
                FKTask = (int)RowTask["FK_Task"];
                if (TaskID == FKTask)
                {
                    Tree.Nodes.Add(RowTask["Name"].ToString());
                    Parent.Add(TaskID);
                    IndexMax++;
                }
            }
            if (Parent.Count < 1)
            {
                return false;
            }
            Children.Clear();
            Index.Clear();
            ChildIndex = -1;
            for (ParentIndex = 0; ParentIndex < Parent.Count; ParentIndex++)//К каждому узлу на самом верхнем уровне начинаем строить дерево
            {
                ChildrenPrev.Clear();
                IndexPrev.Clear();
                ChildrenPrev.Add((int)Parent[ParentIndex]);
                IndexPrev.Add(ParentIndex);
                FillingTree(Tree);
            }
            return true;
        }

        private void FillingTree(System.Windows.Forms.TreeView Tree)
        {
            Boolean Changed = false;
            Index.Clear();
            Children.Clear();
            /*Index = IndexPrev;
            Children = ChildrenPrev;*/
            for (int i = 0; i < IndexPrev.Count; i++)
            {
                if (DB.SelectTaskByFK((int)ChildrenPrev[i]) == null)//Получаем подузлы к этому узлу
                {
                    IndexPrev.RemoveAt(i);
                    ChildrenPrev.RemoveAt(i);
                    FillingTree(Tree);
                }
                foreach (DataRow RowTask in DB.DataSetTask.Tables["Task"].Rows)
                {
                    if ((int)ChildrenPrev[i] != (int)RowTask["TaskID"])
                    {
                        Changed = true;
                        IndexMax++;
                        Index.Add(IndexMax);                        
                        Children.Add((int)RowTask["TaskID"]);
                        //Tree.Nodes[(int)IndexPrev[i] - 1].Nodes.Add(RowTask["Name"].ToString());
                        Tree.Nodes[(int)IndexPrev[i]].Nodes.Add(RowTask["Name"].ToString()); //Пытаемся добавить к дереву
                        //Tree.Nodes[i].Nodes[].Nodes.Insert((int)IndexPrev[i], RowTask["Name"].ToString());
                    }
                }
            }
            if (Changed) //Если были изменения, поехали опять...
            {
                IndexPrev.Clear();
                CopyArrayTo(Index, IndexPrev);
                ChildrenPrev.Clear();
                CopyArrayTo(Children, ChildrenPrev);                
                FillingTree(Tree);
            }
        }