Different Ways of Passing Values Between Windows Phone 7 Pages

public string MyName { get; set; }

Now we can access this "MyName" property from anywhere in the application using the "App.Current" object.

Code to set MyName value in Page1.xaml

private void btnGo_Click(object sender, RoutedEventArgs e)
{
var obj = App.Current as App;
obj.MyName = "dpkshr";
this.NavigationService.Navigate(new Uri("/frmMap.xaml", UriKind.Relative));
}

Code to get MyName value in Page2.xaml

private void PhoneApplicationPage_Loaded(object sender, RoutedEventArgs e)
{
var obj = App.Current as App;
MessageBox.Show(obj.MyName);
}

Using OnNavigatedFrom method

OnNavigateFrom is called when we call the NavigationService.Navigate method. It has a NavigationEventArgs object as a parameter that returns the destination page with its Content property with which we can access a property of the destination page "Page2.xaml.cs"

First, in the destination page "Page2.xaml.cs", declare a property "MyAddress":

public string MyAddress { get; set; }

Now, in "Page1.xaml.cs", override the OnNavigatedFrom method:

protected override void OnNavigatedFrom(NavigationEventArgs e)
{
// NavigationEventArgs returns destination page "Page2"
Page2 obj = e.Content as Page2;
if (obj != null)
{
// Change property of destination page "Page2"
obj.MyAddress = "New Delhi";
}
}

Now, get the MyAddress value in "Page2.xaml.cs":

private void PhoneApplicationPage_Loaded(object sender, RoutedEventArgs e)
{
// This will display "New Delhi"
MessageBox.Show(MyAddress);
}

Conclusion

In this article we saw various methods of passing values in Windows Phone 7 pages. We can use any of the methods as per our convenience.