How to get a top object (Window or Page) in WPF?

Question

Within my custom WPF control I want to get a containing Window or Page. Window.GetWindow() method works fine when control is in a windowed app but when it's in the XBAP app in a browser it returns browser window instead of the page.

Is there any other way to do this?

score 90 · Answer 1 · edited Feb 25 '16 at 23:38

90

This works for me:

Window parentWindow = Window.GetWindow(this);

edited Feb 25 '16 at 23:38

Kirk Woll

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answered May 01 '13 at 20:27

CompG33k

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6
7

Great thanks. Missing the Page.GetPage method ... :S – Ignacio Soler Garcia Feb 23 '15 at 12:48
Very useful! I now can access the controls of the parent window "MyWindow" like this: [ MyWindow mw = parentWindow as MyWindow; ]. – Exel Gamboa Apr 25 '18 at 16:00

score 30 · Answer 2 · edited Mar 01 '14 at 15:43

30

var parent = VisualTreeHelper.GetParent(this);
while (!(parent is Page))
{
    parent = VisualTreeHelper.GetParent(parent);
}
(parent as Page).DoStuff();

edited Mar 01 '14 at 15:43

Community

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1

answered Aug 11 '10 at 21:52

Tomislav Markovski

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Hi Tomislav Markovski, your solution is very helpful for finding the topmost parent i.e. Page. But the DoStuff() method could not be called. I get error saying 'Windows.UI.Xaml.Controls.Page' does not contain a definition for 'DoStuff' (are you missing a using directive or an assemply reference?) I desperately need to call a method in MainPage from a dynamic user control and unable to do this. Help please. – Merin Nakarmi Mar 12 '13 at 17:18
3

Change `while (!(parent is Page))` and `(parent as Page).DoStuff();` to test and cast to your page class. If that is MainPage, then `parent is MainPage` etc. Obviously `DoStuff()` should be the name of your function. – Tomislav Markovski Mar 13 '13 at 19:05

score 7 · Answer 3 · answered May 08 '09 at 13:58

7

You can use the VisualTreeHelper class to retrieve the top-level control :

DependencyObject GetTopLevelControl(DependencyObject control)
{
    DependencyObject tmp = control;
    DependencyObject parent = null;
    while((tmp = VisualTreeHelper.GetParent(tmp)) != null)
    {
        parent = tmp;
    }
    return parent;
}

answered May 08 '09 at 13:58

Thomas Levesque

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Hmm... I think I've already posted this comment... This doesn't work when your control is in a Template. The loop ends when you reach the template "root". – Alan Mendelevich May 16 '09 at 07:20

score 0 · Answer 4 · answered Jul 02 '12 at 20:47

0

i think best way is

var obj = VisualTreeHelper.GetParent((DependencyObject)Content);

answered Jul 02 '12 at 20:47

user1497142

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2

2

This will only give you the direct parent. Consider if you have multiple nested user controls in one window. – ezolotko Aug 27 '13 at 06:38

How to get a top object (Window or Page) in WPF?

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