View navigation in

in the application of WPF MVVM

In the WPF MVVM application, the view navigation involves setting the DataContext of ContentControl to be set to the corresponding ViewModel. By binding ContentControl to the ViewModel attribute of the parent ViewModel, you can easily switch the view in the 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 is specified to connect the viewmplate to the corresponding ViewModel. For example:

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Set ViewModel in MainViewModel

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

Public BaseViewModel ViewModel {get; set;}

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

from sub -view navigation

public BaseViewModel ViewModel { get; set; }

Define commands in MainViewModel

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

Public Icommand DisplayersonView => New ActionCommand ( () => ViewModel = New PersonviewModel (), () =>! IsViewModeloftype () );

 You can seamlessly navigate the view view in WPF MVVM applications. This method provides a flexible and easy -to -maintain way to realize any part of the application view conversion.