新窗口在当前窗口下打开

我在代码中构建了一个窗口,显示:

Window wndViewer = new Window();
wndViewer.Background = new SolidColorBrush(System.Windows.Media.Color.FromArgb(0xFF, 0x31, 0x31, 0x31));
wndViewer.WindowState = WindowState.Maximized;
wndViewer.Width = 1024;
wndViewer.Height = 768;

Grid grd = new Grid();

wndViewer.Title = "<Removed>";

Viewer vw = new Viewer(); // This is a UserControl
vw.StudyDate = ((StudyItem)sender).StudyDate.ToString("MM/dd/yyyy");
vw.PatientName = ((StudyItem)sender).PatientName;
vw.PatientId = ((StudyItem)sender).OwnerName;

vw.Margin = new Thickness(3, 30, 3, 3);
vw.StudyInstance = ((StudyItem)sender).ItemStudy;
grd.Children.Add(vw);

wndViewer.Content = grd;

refreshTimer.Stop();

wndViewer.Tag = vw.StudyInstance;

wndList.Add(wndViewer); // List<Window> of all the windows opened this way.

DependencyObject dpParent = LogicalTreeHelper.GetParent(this);

while (dpParent != null && dpParent.GetType() != typeof(Window))
{
    dpParent = LogicalTreeHelper.GetParent(dpParent);
}

wndViewer.Owner = (Window)dpParent;

wndViewer.ShowActivated = true;

wndViewer.Show();

问题是我需要这个窗口显示在当前窗口的顶部,它总是出现在当前窗口的下面。我尝试过几种解决方案:

wndViewer.BringIntoView();

导入和调用:

[DllImport("User32.dll")]
public static extern Int32 SetForegroundWindow(int hWnd);

[DllImport("user32.dll")]
public static extern int FindWindow(string lpClassName, string lpWindowName);                       

所以,我肯定我忽略了一些东西。谢谢你的帮助!

~md5微米~