ZForge.Controls.TreeViewAdv.Tree.NormalInputState.MouseDown C# (CSharp) Method

        public override void MouseDown(TreeNodeAdvMouseEventArgs args)
        {
            if (args.Node != null)
            {
                Tree.ItemDragMode = true;
                Tree.ItemDragStart = args.Location;

                if (args.Button == MouseButtons.Left || args.Button == MouseButtons.Right)
                {
                    Tree.BeginUpdate();
                    try
                    {
                        Tree.CurrentNode = args.Node;
                        if (args.Node.IsSelected)
                            _mouseDownFlag = true;
                        else
                        {
                            _mouseDownFlag = false;
                            DoMouseOperation(args);
                        }
                    }
                    finally
                    {
                        Tree.EndUpdate();
                    }
                }

            }
            else
            {
                Tree.ItemDragMode = false;
                MouseDownAtEmptySpace(args);
            }
        }