Buttons and Editor in separate views using MVVM and Unity

[Ahmet Karakoc]

Hi,

We have a silverlight application with a menu view containing the ribbonbar and another view with the richtextbox. Is it possible to edit the contents of the richtextbox using prism commands and RichTextBoxCommands when user clicks a ribbonbarbutton eg. bold, insert image etc.

Update: We managed to make the views interact using some code like this:

public RichTextBoxViewModel(IEventAggregator eventAggregator, IUnityContainer container)
        {
            _container = container;

            eventAggregator.GetEvent<HtmlEditorCommandsEvent>().Subscribe(OnHtmlEditorCommand, true);
        }

        private void OnHtmlEditorCommand(string param)
        {
            var radRichTextBox = _container.Resolve<RadRichTextBox>();

            switch (param)
            {
                case HtmlEditorCommands.InsertPictureCommand:
                    var command = new InsertPictureCommand(radRichTextBox);
                    command.Execute();
                    break;
                default:
                    break;
            }
        }

But it would be better to resolve RadRichTextBox in our menu view so we can do something like this in the ribbonbar:

DataContext="{Binding Path=Commands,ElementName=_container.Resolve<RadRichTextBox>()}"









How can we achieve this in the menu viewmodel?



Br,
Ahmet

[Ahmet Karakoc]

When using above code and debugging I get an exception saying "Dialogs must be initiated by user" for the insert picture command. However, the dialog shows and inserts an image when we are not in debug mode.

I tested the same for insert hyperlink command and it is not responding or giving exception at all.

/Ahmet

[Ivailo Karamanolev]

Hi Ahmet Karakoc,

In scenarios like yours, using the RadRichTextBox API in your own custom control logic is the appropriate way to go. The exceptions you're seeing are part of the Silverlight security model and I'd suggest you review these details further.
Get back to us if we can assist you any more.

All the best,
Ivailo
the Telerik team