Solved

WPF C# Find Window Instance

Posted on 2010-09-03
6
1,953 Views
Last Modified: 2013-11-12
I have a click event button handler in which I need to find out the instance (not the class) of the window in which the button resides.

I know that Application.Current.MainWindow will tell me the name of the main window but the application launches several windows so there is no guarantee this button click occurred in the main window.

(P.S. the button resides on a page which is held in a frame of the window)

0
Comment
Question by:esc_toe_account
  • 4
6 Comments
 
LVL 8

Accepted Solution

by:
Gururaj Badam earned 250 total points
ID: 33598571
((Button)sender).Owner should give you the instance of the owner?

Other ways try LogicalTreeHelper.GetParent(sender as DependencyObject);
0
 

Author Comment

by:esc_toe_account
ID: 33598989
Thanks for responding.

((Button)sender.Owner is not valid as Button does not have an Owner property.

And LogicalTreeHelper.GetParent only goes up the tree as far as the page in which the button resides. (Curious as to why it doesn't go up at least to the frame in which in which the page is held?)
0
 

Author Comment

by:esc_toe_account
ID: 33599168
Don't know if this is relevant but the page is navigated to using the navigation service:

theWindow.frame.Navigate(myPage);

where the button in question resides on myPage;
0
Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

 
LVL 16

Expert Comment

by:SriVaddadi
ID: 33600699
RoutedEventArgs has a property Source which could be type casted to button and use the Parent property of the button

Buttong b = e.Source as Button;
b.Parent as Window;
0
 

Author Closing Comment

by:esc_toe_account
ID: 33617674
Not sure what I was looking at before. Of-course, VisualTreeHelper does go all the way up the tree. So your suggestion was accruate. In fact, here is a static method I wrote to browse up the tree looking for a specific type of control object (e.g. Window, Frame, etc.)

public static DependencyObject GetVisualParent(DependencyObject UIObj, string parentType)
        {
            DependencyObject parent = new DependencyObject();
            do
            {
                parent = VisualTreeHelper.GetParent(UIObj);
                if (parent.DependencyObjectType.Name == parentType)
                {
                    return parent;
                }
                UIObj = parent;
            } while (UIObj != null);
                       
            return null;
        }
0
 

Author Comment

by:esc_toe_account
ID: 33617721
Oops, somehow I started using VisualTreeHelper, instead of LogicalTreeHelper which you suggested. That must explain why the former worked and the latter stopped at the page reference. Never noticed the difference till I posted the response! Regardless, you got me to the right solution so points still seem appropriate.
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Many of us here at EE write code. Many of us write exceptional code; just as many of us write exception-prone code. As we all should know, exceptions are a mechanism for handling errors which are typically out of our control. From database errors, t…
More often than not, we developers are confronted with a need: a need to make some kind of magic happen via code. Whether it is for a client, for the boss, or for our own personal projects, the need must be satisfied. Most of the time, the Framework…
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

839 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question