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Get Open A Child Window From View Model In Mvvm In Wpf
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This guide provides detailed instructions on how to open a child window from a view model using the MVVM (Model-View-ViewModel) pattern in WPF (Windows Presentation Foundation). Follow these steps to effectively implement this functionality in your WPF application.
Follow the steps to open a child window from your view model
- Click the ‘Get Form’ button to obtain the form and open it in the editor.
- Create a new project named 'PrismMVVMTestProject' as a WPF application.
- Set up three folders within the project for Model, View, and ViewModel to organize your components.
- On the child window page, 'PopUpWindow.xaml', add a label using the following code:
- On 'TestViewModel.cs', add essential namespaces at the top of the file:
- Create a command named 'ShowCommand' in the view model and attach it to a method called 'ShowMethod'. This method will instantiate and display the child window.
- In 'TestView.xaml', add a button to trigger the command using the following code:
- Ensure to add ‘PrismMVVMTestProject.ViewModels’ namespace in 'TestView.xaml.cs' and set the Data Context to the 'TestViewModel'.
- Modify the 'StartupUri' to change from the default 'MainWindow' to 'TestView'.
- Run the application to see the output. When clicking on the 'Show PopUp' button, the child window should appear.
Begin implementing these steps online to effectively open a child window from your view model in WPF.
Passing Data between fragments in Android using ViewModel: This is because ViewModel is tied to the activity lifecycle. To actually pass the data between fragments, we need to create a ViewModel object with an activity scope of both the fragments, initialize the ViewModel , and set the value of the LiveData object.
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