c# - WPF在没有按钮的对话框中关闭对话框

<Window x:Class="YourNamespace.YourDialog"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Your Dialog" Height="300" Width="400">
    <!-- 对话框内容 -->
</Window>

public partial class YourDialog : Window
{
    public YourDialog()
    {
        InitializeComponent();
    }

    protected override void OnSourceInitialized(EventArgs e)
    {
        base.OnSourceInitialized(e);
        // 移除窗口的关闭按钮
        RemoveCloseButton();
    }

    private void RemoveCloseButton()
    {
        IntPtr hwnd = new WindowInteropHelper(this).Handle;
        int style = GetWindowLong(hwnd, GWL_STYLE);
        style &= ~WS_SYSMENU;
        SetWindowLong(hwnd, GWL_STYLE, style);
    }

    private const int GWL_STYLE = -16;
    private const int WS_SYSMENU = 0x80000;

    [DllImport("user32.dll")]
    private static extern int GetWindowLong(IntPtr hwnd, int index);

    [DllImport("user32.dll")]
    private static extern int SetWindowLong(IntPtr hwnd, int index, int value);
}

YourDialog dialog = new YourDialog();
dialog.ShowDialog(); // 显示对话框
dialog.Close(); // 关闭对话框