How to Navigate Between Views in a WPF MVVM Application?

View navigation in the WPF mvvm application

In the WPF MVVM application, the view navigation involves the DataContext of ContentControl to set the corresponding viewmodel. By binding ContentControl to the ViewModel attribute of the parent ViewModel, you can easily switch the view in the ViewModel.

Create the base class ViewModel

Define a base class for your ViewModel, such as BaseViewModel, which contains public attributes and interfaces, such as inotifypropertychanged. This base will provide a public structure for all ViewModels.

Create data binding in the app.xaml

In the app.xaml file, it specifies the datatemplate that connects the view to its corresponding ViewModel. For example:

Set ViewModel

<code class="language-xml"><DataTemplate DataType="{x:Type ViewModels:MainViewModel}">
    <MainView/>
</DataTemplate></code>

In the mainViewModel, create a ViewModel attribute that can be set to different ViewModel:

Display view

In your mainwindow.xaml, use ContentControl to display the current viewmodel:

<code class="language-csharp">public BaseViewModel ViewModel { get; set; }</code>

From sub -view navigation

From the sub -view navigation to another view, add the binding in the sub -view to the command in the mainViewModel. For example:

<code class="language-xml"><ContentControl Content="{Binding ViewModel}"/></code>

Define the command in the mainViewModel

In the mainViewModel, define a command that sets the ViewModel property to the required ViewModel:

<code class="language-xml"><!--  省略子视图中的绑定示例，因为原文未提供 --></code>

Through these steps, you can seamlessly navigate the view view in the WPF MVVM application. This method provides a flexible and easy -to -maintain way to realize any part of the application view conversion.

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