您可以使用 RelayCommand（）和


$ b将按钮绑定到命令$ b使用 Application.Current.MainWindow 属性从ViewModel打开子窗口，将新子窗口链接到现有的MainWindow。

You can bind your button to a command using RelayCommand() and

have the child Window being opened from the ViewModel using the Application.Current.MainWindow property to link your new child window to the existing MainWindow.