WPF change ItemsPanel and ItemTemplate in code behind

I have the following list in XAML:

<ListView Name="ListViewBack"
          Margin="3"
          ScrollViewer.HorizontalScrollBarVisibility="Disabled"
          ItemsPanel="{StaticResource IconListPanelTemplate}"
          ItemTemplate="{StaticRes开发者_StackOverflow社区ource IconListDataTemplate}">
</ListView>

Now I would like to be able to change the ItemsPanel and ItemTemplate from the List to the Grid version. I've tried this using the following code:

ListViewBack.ItemsPanel = Resources["IconGridPanelTemplate"] as ItemsPanelTemplate;
ListViewBack.ItemTemplate = Resources["IconGridDataTemplate"] as DataTemplate;

But nothing happens when excecuted.

Any idea's?

Thanks!

Your obvious problem is that you are using Resources[] instead of FindResource(). In general, Resources[] will only work if your resource is in the this.Resources dictionary, and not elsewhere.

This is how I would rewrite your two lines of code:

ListViewBack.ItemsPanel = (ItemsPanelTemplate)ListViewBack.FindResource("IconGridPanelTemplate");
ListViewBack.ItemTemplate = (DataTemplate)ListViewBack.FindResource("IconGridDataTemplate");

Acutally I would be more likely to use triggers or use DynamicResource and swap resource dictionaries for this purpose, but that's another story.

Note that I called ListViewBack.FindResource() instead of just FindResource(). This is in case where IconGridPanelTemplate is redefined in a resource dictionary below the UserControl level. If this will never be possible, you can simply call FindResource().

You need to style your ListView.View, not the ListView itself. Check the documentation for the ViewBase Class for an example.