WPF：window设置单一开启

方法一：

Window window = new Window();

window.ShowDialog;

方法二： 设置一个判断窗口打开状态的全局控制变量

private bool isOpened = false; private void Button_Click(object sender, RoutedEventArgs e) { if (!isOpened) { isOpened = true; Window window = new Window(); window.IsVisibleChanged += (e2, o2) => { isOpened = window.IsVisible ? true : false; }; window.Show(); } }