How to get the Dialog Box Message from a Revit Dialog Box Showing Event

Question

I was wondering if there is a way to get the string message from the revit dialog box showing event. I am able to get the DialogId but not the description message of the revit warning.

public Result OnStartup(UIControlledApplication application)
{
    application.DialogBoxShowing +=
        new EventHandler<Autodesk.Revit.UI.Events.DialogBoxShowingEventArgs>(highlightedWallHandler);

    return Result.Succeeded;
}

public void highlightedWallHandler(object sender,DialogBoxShowingEventArgs args)
{
    // Get the string id of the showing dialog
    string dialogId = args.DialogId;

    //get message description
    //args.Message == "Highlighted walls overlap. One of them may be ignored when Revit finds room boundaries. Use Cut Geometry to embed one wall within the other."
}