Clever Geek Handbook

C # How can I expand an item in a ListView to span multiple lines?

I currently have a ListView (using a detail view). I would like to implement a behavior where the user selects one item (log entry), the log record expands (from one line to multiple lines) to provide more details about the error that occurred.

My question is: is this possible? If so, is there a good resource I can use to help me?

EDIT:

If I need to use WPF, I think I am using ElementHost with a control. However, I don't know how about designing / coding / using WPF components. Any suggestions?

+1


source to share


4 answers


Edit: sorry this is wpf

The trick I used to achieve the same was to create a trigger showing a secondary grid that was collapsed by default.



Try the following:

    <ListBox ItemsSource="{Binding}">
        <ListBox.ItemTemplate>
            <DataTemplate>
                <Grid>
                    <Grid.RowDefinitions>
                        <RowDefinition></RowDefinition>
                        <RowDefinition></RowDefinition>
                    </Grid.RowDefinitions>

                    <Grid Grid.Row="0" Height="20" >
                        <TextBlock Text="Not Selected"></TextBlock>
                    </Grid>
                    <Grid x:Name="selectedOnlyGrid" Grid.Row="1" Visibility="Collapsed">
                        <TextBlock Text="Selected"></TextBlock>
                    </Grid>

                </Grid>

                <DataTemplate.Triggers>
                    <DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBoxItem}, AncestorLevel=1}, Path=IsSelected}" Value="True">
                        <Setter Property="Visibility" Value="Visible" TargetName="selectedOnlyGrid" />
                    </DataTrigger>
                </DataTemplate.Triggers>
            </DataTemplate>
        </ListBox.ItemTemplate>
    </ListBox>
+4


source


Read the post on CodeProject here: Extended List Box



Must have all the information you need :)

+2


source


One way to do this with a ListView is to dynamically add a new ListViewItem for each additional row you want when the parent is selected. Likewise, you will need to remove them when the selection changes to a different item.

You will also probably want to override the default up / down behavior to skip child elements.

+1


source


Not a direct answer to your question, but I think you're better off with a grid in this case.

0


source






More articles:


All Articles