只有在右击节点时才会触发
private void treeList1_MouseDown(object sender, MouseEventArgs e) { if (e.Button == MouseButtons.Right) { treeList1.ContextMenuStrip = null; TreeListHitInfo hInfo = treeList1.CalcHitInfo(new Point(e.X, e.Y)); TreeListNode node = hInfo.Node; treeList1.FocusedNode = node; if (node != null) { treeList1.ContextMenuStrip = contextMenuStrip1; } }