public void Redo(object sender, EventArgs e) { if (RActions.Count == 0) { return; } TilemapUndoEntry item = RActions.Pop(); item.Redo(t.tiles); item.reRender(t); UActions.Push(item); redobutton.Enabled = RActions.Count > 0; undobutton.Enabled = true; pictureBox1.Invalidate(true); }