How Can I Effectively Pass Values Between XAML Pages in WPF, Silverlight, and Windows Apps?

Passing Values between XAML Pages

Overview

Passing values between XAML pages is a crucial aspect of UI development. This can involve sharing data between pages, passing parameters for initialization, or returning results from child pages. This article explores various methods for passing values in WPF, Silverlight, Windows 8, and Windows Phone applications.

Methods to Pass Parameters

1. Using Query String:

This method is used with Uri navigation. Data is converted to strings, URL-encoded, and appended to the query string. It is suitable for passing simple data.

2. Using NavigationEventArgs:

This technique allows passing values through the NavigationEventArgs object. The navigating page can modify properties of the destination page before navigation.

3. Using Manual Navigation:

In this method, a Page object is manually created with parameters passed through its constructor. The destination page can access these parameters in its constructor.

Difference between Uri and Manual Navigation

Uri navigation creates a new page instance and adds it to the navigation history. Manual navigation, on the other hand, keeps the page in memory even after navigating away.

Passing Complex Objects

Converting complex objects to strings or using Application-scoped properties are possible but not ideal. It is recommended to use method one or two for passing complex objects between XAML pages.

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