Question

First off let me just say I’m very new to coding so there are big gaps in my knowledge… anywho:

Right, I’m trying to sort a WPF listbox when a button is clicked, preferrably in pure xaml (otherwise VB). I’m having a hard time seeing as most samples are written in C#. Here’s my code:

 <Grid.Resources>       <CollectionViewSource x:Key='myCollectionView'                             Source='{Binding Path=Query4, Source={x:Static Application.Current}}' >            <CollectionViewSource.SortDescriptions>                 <scm:SortDescription PropertyName='ContactID'                                      Direction='Descending'/>            </CollectionViewSource.SortDescriptions>       </CollectionViewSource> </Grid.Resources>  <ListBox x:Name='ContDefault'          IsSynchronizedWithCurrentItem='True'          ItemsSource='{Binding Source={StaticResource myCollectionView}}'          ItemTemplate='{StaticResource ContactsList}' /> 

Now, what I want to do is add a button like so:

 <Button x:Name='SortNameAsc'          Content='Sort By Name'          Visibility='Visible'> 

Now when this button is clicked, I’d like the listbox to sort by the field ‘First Name’, I assume I have to change the sort description somehow, so could anyone tell me how please? Or am i going about this hte worng way. Again preferabbly in XAML, but if need be in VB could you try and keep it simple please??

Thanks guys

Answer 1

Hope it helps: Google came up with this (http://www.kudzuworld.com/blogs/Tech/20070815A.en.aspx)

ListCollectionView view = new ListCollectionView(channel.Members); view.SortDescriptions.Add(new System.ComponentModel.SortDescription('lastName',   System.ComponentModel.ListSortDirection.Ascending); view.SortDescriptions.Add(new System.ComponentModel.SortDescription('firstName',   System.ComponentModel.ListSortDirection.Ascending);  view.CustomSort = new IComprarerImplementation; //Do this if you want a custom sort; view.Refresh(); 

Regarding Example 3 this should be correct:

<ListBox x:Name='ContDefault'          IsSynchronizedWithCurrentItem='True'          ItemsSource='{Binding Source={StaticResource myCollectionView}}'          ItemTemplate='{StaticResource ContactsList}'          SortDescription='First Name' />