So I have a StackPanel that I am using as a ContentControl. I have a place where I want buttons to be generated based on data that I am binding to, and that is all working good, but I want the buttons to be laid out horizontally, not vertically as is what is currently happening. Here's a screenshot:

And here is the code from my ContentTemplate description:
<StackPanel Name="wpReleaseButtons" Orientation="Horizontal" Grid.Row="2">
<ItemsControl IsTabStop="False" ItemsSource="{Binding Path=BranchCommands}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Button Tag="{Binding}" Padding="3">
<TextBlock Text="{Binding Path=DisplayValue}" />
</Button>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</StackPanel>
Not sure what I'm doing wrong here. Any info would be greatly appreciated. Thanks!