patterns & practices: Composite WPF and Silverlight

Hi

I am creating a prism2 Application mainly it contains 2 modules.

In module one i am going to place Images(around 10) using List Item and in Module 2 I Place an Image Control.

when i select a image in module one it should be displayed in module 2.

My Problem is am not able to generated a command Event of ListBox Selection Changed and Not able to Execute and publist the event.

Any help is Appreciated with a little sample code to gennerate Listitem Command Event (SilVerlight).

For Button  Command.Click.CommandName and Path by using commands namespace Is there any kind for ListBox selectionchange.

Thanks in advance.

dschenkelman wrote:

Hi

In my personal opinion there is no need to create a command to execute an action when a ListBox item is clicked. Instead you can bind the ListBox’s SelectedItem and publish the event through Event Aggregator every time the selected item changes.

If you do decide to use a command instead of plain binding you can use this code snippet. This sample application uses a command to execute an action when a new Grid item is selected, so you might find it useful.

Please let me know if this helps.

Damian Schenkelman
http://blogs.southworks.net/dschenkelman

 

 Hi Damian,

Thanks a lot for Reply and your code snippet is awesome and i am very much comfortable regarding prism while going through.

I am able to create application and build it but not able to publish the event i tried in many different ways I tried with INotifyProperty change but noluck .

VIEWMODEL(I CreateModel init)

public class ThumbViewModel 
    {
        public ICommand SelectionChanged { get; private set; }
        IEventAggregator _eventAggregator;
        public ThumbViewModel(IEventAggregator eventAggregator)
        {
            _eventAggregator = eventAggregator;
            this.SelectionChanged = new DelegateCommand(OnSearch);
            Stories = new ObservableCollection();
            Stories.Add(new People(){Title = "/DragDrop.Thumb;Component/Images/Sunset.jpg"});
            Stories.Add(new People() { Title = "/DragDrop.Thumb;Component/Images/Water lilies.jpg" });
            //OnPropertyChanged("Title");
        }
       
        private void OnSearch(People people)
        {
            CustomerSelected customerSelected = new CustomerSelected()
            {
                image = people.Title
                
            };
           _eventAggregator.GetEvent().Publish(customerSelected);
        }
       

        //#region INotifyPropertyChanged Members

        //public event PropertyChangedEventHandler PropertyChanged;

        //protected void OnPropertyChanged(string propertyName)
        //{
        //    if (this.PropertyChanged != null)
        //    {
        //        this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        //    }
        //}

        //#endregion


        public ObservableCollection Stories
        {
            get;
            private set;
        }

    }
    public class People
    {
        public string Title { get; set; }
    }

 XAML