How do I ensure only the headers are shown for the first item in an ItemsControl in WPF?
- by Dan Ryan
I am using MVVM binding an ObservableCollection of children to an ItemsControl. The ItemsControl contains a UserControl used to style the UI for the children.
<ItemsControl ItemsSource="{Binding Documents}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<View:DocumentView Margin="0, 10, 0, 0" />
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
I want to show a header row for the contents of the ItemsControl but only want to show this once at the top (not for every child). How can I implement this behaviour in the DocumentView user control? Fyi I am using a Grid layout to style the child rows:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="34"/>
<ColumnDefinition Width="100"/>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="60" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<TextBlock Grid.ColumnSpan="4" Grid.Row="0" Text="Should only show this at the top"></TextBlock>
<Image Grid.Column="0" Grid.Row="1" Height="24" Width="24" Source="/Beazley.Documents.Presentation;component/Icons/error.png"></Image>
<ComboBox Grid.Column="1" Grid.Row="1" Name="ContentTypes" ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type View:MainView}}, Path=DataContext.ContentTypes}" SelectedValue="{Binding ContentType}"/>
<TextBox Grid.Column="2" Grid.Row="1" Text="{Binding Path=FileName}"/>
<Button Grid.Column="3" Grid.Row="1"
Command="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type View:MainView}}, Path=DataContext.RemoveFile}"
CommandParameter="{Binding}">Remove</Button>
</Grid>
