C# MVVM灯光和ViewModelLocator
我可以看到,当我的应用程序启动时,ViewModelLocator的构造函数首先被执行,但如何让ViewModels的构造函数在启动之后运行,因为在它们内部,我有一个注册,我希望在我的应用程序中发生。由于绑定,当我进入视图时,CustomViewModel的构造函数将运行。绑定到一个名为CompositeViewModel的主类,该主类包含我的viewModels 复合视频模型:C# MVVM灯光和ViewModelLocator,c#,xaml,constructor,inversion-of-control,mvvm-light,C#,Xaml,Constructor,Inversion Of Control,Mvvm Light,我可以看到,当我的应用程序启动时,ViewModelLocator的构造函数首先被执行,但如何让ViewModels的构造函数在启动之后运行,因为在它们内部,我有一个注册,我希望在我的应用程序中发生。由于绑定,当我进入视图时,CustomViewModel的构造函数将运行。绑定到一个名为CompositeViewModel的主类,该主类包含我的viewModels 复合视频模型: class CompositeViewModel { public static CustomViewMod
class CompositeViewModel
{
public static CustomViewModel customViewModel { get; set; }
static CompositeViewModel()
{
customViewModel = new CustomViewModel();
}
}
public CustomViewModel()
{
Messenger.Default.Register<ObservableCollection<MyType>>
(
this,
(action) => ReceiveMessage(action)
);
}
private void ReceiveMessage(ObservableCollection<MyType> action)
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
this.MyDataSource.Clear();
foreach (MyTypet mt in action)
{
this.MyDataSource.Add(mt);
}
});
}
这是我的ViewModelLocator
public ViewModelLocator()
{
ServiceLocator.SetLocatorProvider(() => SimpleIoc.Default);
SimpleIoc.Default.Register<CustomViewModel>();
SimpleIoc.Default.Register<MainViewModel>();
}
public CustomViewModelTripTypeView
{
get
{
return ServiceLocator.Current.GetInstance<CustomViewModel>();
}
}
公共ViewModelLocator()
{
ServiceLocator.SetLocatorProvider(()=>SimpleIoc.Default);
SimpleIoc.Default.Register();
SimpleIoc.Default.Register();
}
公共CustomViewModelTripTypeView
{
得到
{
返回ServiceLocator.Current.GetInstance();
}
}
这是我的CustomViewModels构造函数中的代码:
class CompositeViewModel
{
public static CustomViewModel customViewModel { get; set; }
static CompositeViewModel()
{
customViewModel = new CustomViewModel();
}
}
public CustomViewModel()
{
Messenger.Default.Register<ObservableCollection<MyType>>
(
this,
(action) => ReceiveMessage(action)
);
}
private void ReceiveMessage(ObservableCollection<MyType> action)
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
this.MyDataSource.Clear();
foreach (MyTypet mt in action)
{
this.MyDataSource.Add(mt);
}
});
}
publiccustomviewmodel()
{
Messenger.Default.Register
(
这
(操作)=>ReceiveMessage(操作)
);
}
private void ReceiveMessage(ObservableCollection操作)
{
DispatcherHelper.CheckBeginInvokeOnUI(()=>
{
this.MyDataSource.Clear();
foreach(MyTypet mt正在运行)
{
this.MyDataSource.Add(mt);
}
});
}
对于带有bool
参数的Register
方法,有一个重载方法
SimpleIOC.Default.Register<MainViewModel>(true);
SimpleIOC.Default.Register(true);
此语句将立即创建
MainViewModel
的实例,该MainViewModel是否应该执行我的CompositeViewModel工作?