How to pass values between two pages in WPF

Question

what is the best practice to pass values between pages in WPF?

thanks

I go through a few different methods to pass parameters in [this answer](http://stackoverflow.com/a/12444817/200442). It goes over using query string parameters, constructor arguments and a few others. — Daniel Little, Sep 24 '12 at 03:30
possible duplicate of [How to pass values (parameters) between XAML pages?](http://stackoverflow.com/questions/12444816/how-to-pass-values-parameters-between-xaml-pages) — Daniel Little, Jan 13 '14 at 01:25

score 9 · Accepted Answer · answered Oct 26 '11 at 11:46

9

Your fixed point of reference is the Application object. You can store stuff in the Properties collection:

 string myText = (string)Application.Current.Properties["test"];

Or you can add any kind of data to your derived App class.

answered Oct 26 '11 at 11:46

H H

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this approach risks your App object becoming a God object. – Joe Oct 26 '11 at 12:08
An Application object always is a God object. No problem, just add a Configuration property. – H H Jan 26 '19 at 23:53

score 8 · Answer 2 · edited Mar 13 '14 at 14:52

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Example variable name = DeptName

Declare the variable in App.xaml i.e.

public string DeptName { get; set; }

assign the value in your page-1

(App.Current as App).DeptName = "test";

then call the value in your page-2

 string selected_dept = (App.Current as App).DeptName;

edited Mar 13 '14 at 14:52

ohlmar

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answered Mar 13 '14 at 14:32

Raj

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score 5 · Answer 3 · edited Oct 26 '11 at 11:44

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Probably via the Model in an MVVM architecture.

edited Oct 26 '11 at 11:44

Klaus Byskov Pedersen

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answered Oct 26 '11 at 11:43

Joe

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But where do you store the model? It's a good idea but just moves the problem around. – H H Oct 26 '11 at 11:47
@Henk, a short answer to a short question. But designing an MVVM application is a big subject, the link kindly provided by Klaus in my answer is a good starting point. – Joe Oct 26 '11 at 12:05

score 1 · Answer 4 · answered Oct 26 '11 at 11:44

same as Windows Forms:

do not just use global variables or access page's controls from another page. if you have two pages which need to share the same object, e.g. Student, have a method like SetStudent(Student student) in your page or use a property so one page can pass the object Student using that method. You can also have the Get of course, if needed.

How to pass values between two pages in WPF

4 Answers4

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