How to Best Pass Parameters Between XAML Pages in Different Platforms?

Passing Parameters Between XAML Pages

Question Summary:

• How to pass parameters between XAML pages in various platforms (WP7, Silverlight, WPF, Windows 8).
• Differences between Uri navigation and manual navigation.
• Best practices for passing complex objects.

Methods to Pass Parameters:

1. Using the Query String (Uri Navigation)

• Parameters are URL-encoded and passed through the URI.
• Suitable for passing simple data values.
• NavigationContext.QueryString retrieves parameters in the destination page.

2. Using NavigationEventArgs (Uri Navigation)

• Utilizes the OnNavigatedFrom method to set a property on the destination page.
• Allows passing arbitrary objects.

3. Using Manual Navigation (WPF/Windows 8 Only)

• Pages are created directly without using URI navigation.
• Parameters can be passed through the page constructor or properties.

Difference Between Uri and Manual Navigation:

• Uri navigation keeps pages in memory for faster navigation.
• Manual navigation creates new instances of pages.

Passing Complex Objects:

• Use the Query String or NavigationEventArgs methods.
• Alternatively, store objects in the Application class properties or Application.Current.Properties.

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