« Prism 8 » : différence entre les versions
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| Ligne 39 : | Ligne 39 : | ||
<filebox fn='MyViewModel.cs'> | <filebox fn='MyViewModel.cs'> | ||
public DelegateCommand DoCommand { get; } | public DelegateCommand DoCommand { get; } | ||
public DelegateCommand DoWithParamCommand<string> { get; } | |||
public MyViewModel() | public MyViewModel() | ||
{ | { | ||
DoCommand = new DelegateCommand(Do, CanDo); | DoCommand = new DelegateCommand(Do, CanDo); | ||
DoWithParamCommand = new DelegateCommand<string>(DoWithParam, CanDoWithParam); | |||
} | } | ||
| Ligne 49 : | Ligne 51 : | ||
private bool CanDo() => true; | private bool CanDo() => true; | ||
private void DoWithParam(string parameter) | |||
{ } | |||
private bool CanDoWithParam(string parameter) => true; | |||
</filebox> | </filebox> | ||
<filebox fn='MyView.xaml'> | <filebox fn='MyView.xaml'> | ||
<Button Command="{Binding DoCommand}" | <Button Command="{Binding DoCommand}" | ||
Content="Do" /> | |||
<Button Command="{Binding DoWithParamCommand}" | |||
CommandParameter="{Binding Content, RelativeSource={RelativeSource Self}}}" | |||
Content="Do" /> | Content="Do" /> | ||
</filebox> | </filebox> | ||
Version du 10 avril 2021 à 20:28
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Description
Fully open source version of Prism including MVVM, dependency injection, commands, EventAggregator, and others.
Prism 8 supports WPF, Xamarin Forms and UNO, but not Silverlight, Windows 8/8.1/WP8.1 or UWP.
Getting Started
- Nuget packages
- Prism.Core
- Prism.Wpf
- Prism.DryIoc
- Prism Template Pack Visual Studio extension
Dependency Injection
| App.xaml.cs |
public partial class App
{
protected override void RegisterTypes(IContainerRegistry containerRegistry)
{
// register a singleton service
containerRegistry.RegisterSingleton<IMyService, MyService>();
// registera transient service
containerRegistry.Register<IMyService, MyService>();
}
|
| singleton service | for a service which is used throughout the application and that retains its state. |
| transient service | create a new instance each time. |
| scoped service | no implementation because unlike a web application, desktop applications are dealing with a single user and not scoped user requests. |
Commands
| MyViewModel.cs |
public DelegateCommand DoCommand { get; }
public DelegateCommand DoWithParamCommand<string> { get; }
public MyViewModel()
{
DoCommand = new DelegateCommand(Do, CanDo);
DoWithParamCommand = new DelegateCommand<string>(DoWithParam, CanDoWithParam);
}
private void Do()
{ }
private bool CanDo() => true;
private void DoWithParam(string parameter)
{ }
private bool CanDoWithParam(string parameter) => true;
|
| MyView.xaml |
<Button Command="{Binding DoCommand}"
Content="Do" />
<Button Command="{Binding DoWithParamCommand}"
CommandParameter="{Binding Content, RelativeSource={RelativeSource Self}}}"
Content="Do" />
|
