Dialog Class

The IDialogViewModel instance bound to the DialogDataContextProperty will be assigned to the Content of the Window. To layout the content requires to define an implicit DataTemplate that targets the type of the IDialogViewModel implementation. Alternatively set the template for the ContentTemplate via a Style that targets Window and is assigned to the StyleProperty attached property. For more complex scenarios it is possible to assign a DataTemplateSelector to the DataTemplateSelectorProperty attached property.

To define the attributes like title and icon of the dialog, set the corresponding values of the IDialogViewModel implementation. Dialog sets up a data binding to those properties, so that they can be dynamically changed by the view model.

It is recommended to use and extend the abstract DialogViewModel, which provides the basic IDialogViewModel implementation and logic. It only needs to be extended to provide the required specific properties for the dialog's context.

To show a dialog, simply assign an instance of IDialogViewModel to the attached property DialogDataContextProperty. A change of that property will automatically display a new dialog window. To each IDialogViewModel maps an instance of Window. It is recommended to bind the attached DialogDataContextProperty to a property of a view model class that implements INotifyPropertyChanged. This way it is very simple to display dialogs dynamically initiated by the view model i.e. the binding source of the attached DialogDataContextProperty property.

To close a dialog, raise the InteractionCompleted event from the IDialogViewModel implementation e.g., by calling OnInteractionCompleted() or by invoking the SendResponseAsyncCommand (in case you followed the recommendation to extend DialogViewModel).

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