C#点击按钮时label可见，再次点击label不可见

C#点击按钮bu_1时label可见，再次点击label不可见

eg: private bool kong = true;

private void bu_1_Click(object sender, EventArgs e) { label.Visible = kong; bool tmp = kong; if (tmp==true) { kong = false; } if (tmp == false) { kong = true; } }