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ViewExtensions

Name Value
Assembly Catel.MVVM
Namespace Catel.MVVM.Views
Available on .NET Framework 4.5, .NET Framework 4.6, Xamarin - Android, Xamarin - iOS 
public static class ViewExtensions

Extension methods for views.

Fields

Methods

AutoDetectViewPropertiesToSubscribe(Type viewType)

Automatically detects view properties to subscribe to by searching for dependency properties decorated with the ViewToViewModelAttribute.

Parameters

Name Description
viewType The view type.

Dispatch(IView view, Action action)

Runs the specified action on the view dispatcher.

Parameters

Name Description
view The view.
action The action.

Exceptions

Name Description
ArgumentNullException The view isnull.

EnsureVisualTree(IView view)

Ensures that a visual tree exists for the view.

Parameters

Name Description
view The view.

FindParentByPredicate(IView view, Predicate<object> predicate)

Finds a parent by predicate. It first tries to find the parent via theUserControl.Parent property, and if that doesn’t satisfy, it uses theUserControl.TemplatedParent property.

Parameters

Name Description
view The control.
predicate The predicate.

Returns

ornull if no parent is found that matches the predicate.

FindParentByPredicate(FrameworkElement view, Predicate<object> predicate, int maxDepth)

Finds a parent by predicate. It first tries to find the parent via theUserControl.Parent property, and if that doesn’t satisfy, it uses theUserControl.TemplatedParent property.

Parameters

Name Description
view The control.
predicate The predicate.
maxDepth The maximum number of levels to go up when searching for the parent. If smaller than 0, no maximum is used.

Returns

ornull if no parent is found that matches the predicate.

FindParentViewModelContainer(IView view)

Finds the parent view model container.

Parameters

Name Description
view The view.

Returns

The IViewModelContainer ornull if the container is not found.

GetParent(IView view)

Gets the parent of the specified view.

Parameters

Name Description
view The view.

Returns

GetParent(FrameworkElement element)

Gets the parent of the specified element.

Parameters

Name Description
element The element.

Returns

The parent ornull if there is no parent.

GetPossibleParents(FrameworkElement element)

Gets the possible parents of the specified element.

Parameters

Name Description
element The element.

Returns

The possible parents ornull if there is no parent.

GetProperties(IView view)

Gets the properties of the view.

Parameters

Name Description
view The view.

Returns

List of properties.

SubscribeToPropertyChanged(IView view, string propertyName, EventHandler<PropertyChangedEventArgs> handler)

Subscribes to the property changed event.

Parameters

Name Description
view The view.
propertyName Name of the property.
handler The handler.

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