var primaryScreen = Screen.PrimaryScreen;

    var window = Window.GetWindow(ExportButton);//获取当前主窗口
    var intPtr = new WindowInteropHelper(window).Handle;//获取当前窗口的句柄
    var screen = Screen.FromHandle(intPtr);//获取当前屏幕

    using (Graphics currentGraphics = Graphics.FromHwnd(intPtr))
    {
        double dpiXRatio = currentGraphics.DpiX / DpiPercent;
        double dpiYRatio = currentGraphics.DpiY / DpiPercent;
        var width = screen.Bounds.Width / dpiXRatio;
        var height = screen.Bounds.Height / dpiYRatio;
        var left = screen.Bounds.Left / dpiXRatio;
        var top = screen.Bounds.Top / dpiYRatio;
    }

    var screenHeight = SystemParameters.PrimaryScreenHeight;
    var screenWidth = SystemParameters.PrimaryScreenWidth;

    var primaryScreenHeight = SystemParameters.FullPrimaryScreenHeight;
    var primaryScreenWidth = SystemParameters.FullPrimaryScreenWidth;

    var workAreaWidth = SystemParameters.WorkArea.Size.Width;
    var workAreaHeight = SystemParameters.WorkArea.Size.Height;