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POHandling Navigation in MVVM WPF application
 

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    <p>I am developing a WPF application that follows MVVM. Now I am handling navigation of views in the following manner. MainWindow View</p> <pre><code>&lt;Border&gt; &lt;StackPanel&gt; &lt;local:Home Content="{Binding CurrentView,Converter={StaticResource ViewConverterHome}, UpdateSourceTrigger=PropertyChanged}"/&gt; &lt;local:Page1 Content="{Binding CurrentView,Converter={StaticResource ViewConverterPage1}, UpdateSourceTrigger=PropertyChanged}"/&gt; &lt;local:Page2 Content="{Binding CurrentView,Converter={StaticResource ViewConverterPage2}, UpdateSourceTrigger=PropertyChanged}"/&gt; &lt;/StackPanel&gt; &lt;/Border&gt; </code></pre> <p>Home, Page1,Page2 are 3 views. HomeVM,Page1VM,Page2VM are view models corresponding to the views. There is a class call ApplicationViewModel that contains a property CurrentView of type CViewModelBase which is the parent class for all three viewmodels. ApplicationViewModel handles the navigation in the folowing manner</p> <pre><code> private void OnUserInputNextClicked(object sender, OperationInformationChangedEventArgs e) { do { if (this.CurrentView is HomeVM) { this.CurrentView = null; Page1VM page1 = new Page1VM("BNM", "MATH HONS", "13"); page1.NextCilcked += new EventHandler&lt;OperationInformationChangedEventArgs&gt;(OnUserInputNextClicked); page1.BackCilcked += new EventHandler&lt;OperationInformationChangedEventArgs&gt;(OnUserInputBackClicked); this.CurrentView = page1; break; } if (this.CurrentView is Page1VM) { this.CurrentView = null; Page2VM page2 = new Page2VM("Kolkata", "Monoj", "Itachuna"); page2.NextCilcked += new EventHandler&lt;OperationInformationChangedEventArgs&gt;(OnUserInputNextClicked); page2.BackCilcked += new EventHandler&lt;OperationInformationChangedEventArgs&gt;(OnUserInputBackClicked); this.CurrentView = page2; break; } if (this.CurrentView is Page2VM) { this.CurrentView = null; HomeVM home = new HomeVM("Anirban", "30"); home.NextCilcked += new EventHandler&lt;OperationInformationChangedEventArgs&gt;(OnUserInputNextClicked); this.CurrentView = home; break; } } while (false); } </code></pre> <p>The navigation is working perfectly; But dispose of disappeared views are not getting called.So all the views live till the end. Is there any way to prevent that? </p>
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