ViewModelManager
| Name | Value |
|---|---|
| Assembly | Catel.MVVM |
| Namespace | Catel.MVVM |
| Available on | .NET Framework 4.5, .NET Framework 4.6, Xamarin - Android, Xamarin - iOS |
public class ViewModelManager : IViewModelManager
Implements interfaces IViewModelManager
Manager for view models. Thanks to this manager, it is possible to subscribe to other view models and be able to respond correctly to property changes in other views.
Fields
Constructors
ViewModelManager()
Initializes a new instance of the ViewModelManager class.
Remarks
The constructor is private because this is a singleton class.
Properties
ActiveViewModels
Gets the active view models presently registered.
ViewModelCount
Gets the view model count.
Methods
GetChildViewModels(IViewModel parentViewModel)
Gets the child view models of the specified view model.
Parameters
| Name | Description |
|---|---|
| parentViewModel | The parent view model. |
Returns
The child view models.
GetChildViewModels(int parentUniqueIdentifier)
Gets the child view models of the specified view model unique identifier.
Parameters
| Name | Description |
|---|---|
| parentUniqueIdentifier | The parent unique identifier. |
Returns
The child view models.
GetFirstOrDefaultInstance(Type viewModelType)
Gets the first or default instance of the specified view model.
Parameters
| Name | Description |
|---|---|
| viewModelType | Type of the view mode. |
Returns
The IViewModel ornull if the view model is not registered.
Exceptions
| Name | Description |
|---|---|
| System.ArgumentException | The viewModelType is not of type IViewModel. |
GetFirstOrDefaultInstance<TViewModel>()
Gets the first or default instance of the specified view model.
Type Parameters
TViewModel The type of the view model.
Returns
The IViewModel ornull if the view model is not registered.
GetViewModel(int uniqueIdentifier)
Gets the view model by its unique identifier.
Parameters
| Name | Description |
|---|---|
| uniqueIdentifier | The unique identifier. |
Returns
The IViewModel ornull if the view model is not registered.
GetViewModelsOfModel(object model)
Gets the view models of a model.
Parameters
| Name | Description |
|---|---|
| model | The model to find the linked view models for. |
Returns
An array containing all the view models.
Exceptions
| Name | Description |
|---|---|
| ArgumentNullException | The model isnull. |
RegisterModel(IViewModel viewModel, object model)
Registers the model of a view model.
Parameters
| Name | Description |
|---|---|
| viewModel | The view model. |
| model | The model. |
Exceptions
| Name | Description |
|---|---|
| ArgumentNullException | The viewModel isnull. |
RegisterViewModelInstance(IViewModel viewModel)
Registers a view model instance with the manager. All view models must register themselves to the manager.
Parameters
| Name | Description |
|---|---|
| viewModel | The view model to register. |
Exceptions
| Name | Description |
|---|---|
| ArgumentNullException | The viewModel isnull. |
UnregisterAllModels(IViewModel viewModel)
Unregisters all models of a view model.
Parameters
| Name | Description |
|---|---|
| viewModel | The view model. |
Exceptions
| Name | Description |
|---|---|
| ArgumentNullException | The viewModel isnull. |
UnregisterModel(IViewModel viewModel, object model)
Unregisters the model of a view model.
Parameters
| Name | Description |
|---|---|
| viewModel | The view model. |
| model | The model. |
Exceptions
| Name | Description |
|---|---|
| ArgumentNullException | The viewModel isnull. |
UnregisterViewModelInstance(IViewModel viewModel)
Unregisters a view model instance from the manager. All view models must unregister themselves from the manager.
Parameters
| Name | Description |
|---|---|
| viewModel | The view model to unregister. |
Exceptions
| Name | Description |
|---|---|
| ArgumentNullException | The viewModel isnull. |
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