Hi

I declare private variable 

private IFilterViewModel filterViewModelTreeHotel;

Then i create my FIlterView on LoadDimensionsCompleted of my adomdDataSource

...

this.filterViewModelTreeHotel = this.adomdDataSourceVyber.CreateFilterViewModel(herarchy);

this.filterViewModelTreeHotel.LoadFilterMembersCompleted += new EventHandler<AsyncCompletedEventArgs>(fvm_LoadFilterMembersCompletedTreeHotely);

this.filterViewModelTreeHotel.LoadFilterMembersAsync();

This filtrView i Use as ItemSource for my TreeView

private void fvm_LoadFilterMembersCompletedTreeHotely(object sender, AsyncCompletedEventArgs e)

{

this.myTreeView.ItemsSource = this.filterViewModelTreeHotel.FilterMembers;

}

1. Question Why method fvm_LoadFilterMembersCompletedTreeHotely fired twice?

Now i have some logic on TreeView and setting IsSelected and IsEpanded property of FilterMember in FilterMembers collection.

Then I create another AdomdDataSource and use his.filterViewModelTreeHotel for columns

AdomdDataSource adomdDataSourceData = new AdomdDataSource();

...

adomdDataSourceData.Rows.Add(this.filterViewModelTreeHotel);

When data is Loaded, my TreeView is Empty! my collection in this.filterViewModelTreeHotel.FilterMembers[0].FilterMembers is empty ! Why?

But in adomdDataSourceData.Rows[0].FilterMembers[0].FilterMembers is everithing ok.