Databases
StackOverflow2013
Postsdbo
POAccess parent datacontext in listbox in Silverlight
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POAccess parent datacontext in listbox in Silverlight
    primarykey
    data
    text
    <p>In Silverlight 2 I'm using a usercontrol which inherits the datacontext of the page that it's embedded on. This datacontext contains question text, a question type and a collection of answers. In the user control is a listbox which is bound to the collection of answers. As shown below:</p> <pre><code>&lt;ListBox DataContext="{Binding}" x:Name="AnswerListBox" ItemContainerStyle="{StaticResource QuestionStyle}" Grid.Row="1" Width="Auto" Grid.Column="2" ItemsSource="{Binding Path=AnswerList}" BorderBrush="{x:Null}" /&gt; </code></pre> <p>This listbox has an associated style to display the answers in the form of radio buttons or checkboxes (which I would like to hide or show depending on the question type) as:</p> <pre><code>&lt;Style TargetType="ListBoxItem" x:Key="QuestionStyle"&gt; &lt;Setter Property="Template"&gt; &lt;Setter.Value&gt; &lt;ControlTemplate TargetType="ListBoxItem"&gt; &lt;StackPanel Background="Transparent" &gt; &lt;RadioButton Visibility="{Binding Path=QuestionType, Converter={StaticResource QuestionTypeConverter}, ConverterParameter='RadioButtonStyle'}" Height="auto" Margin="0,0,0,10" IsChecked="{TemplateBinding IsSelected}" IsHitTestVisible="False" Content="{Binding Path=AnswerText}"&gt; &lt;/RadioButton&gt; &lt;CheckBox Visibility="{Binding Path=QuestionType, Converter={StaticResource QuestionTypeConverter}, ConverterParameter='CheckBoxStyle'}" Height="auto" Margin="0,0,0,10" Content="{Binding Path=AnswerText}"&gt; &lt;/CheckBox&gt; &lt;/StackPanel&gt; &lt;/ControlTemplate&gt; &lt;/Setter.Value&gt; &lt;/Setter&gt; &lt;/Style&gt; </code></pre> <p>So my question is then: how do you access the parent data context in order to get the QuestionType (as this is a property on the user control datacontext itself, not a property on an AnswerItem in the AnswerList)?</p> <p>Alternatively is there a better way to switch styles dynamically in the xaml based on a binding value?</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USJames_2195
    plurals
    1. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    3. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POAccess parent datacontext in listbox in Silverlight
      1. USgeofftnz
      1. VTFavorite
    2. VO
      singulars
      1. POAccess parent datacontext in listbox in Silverlight
      1. USMike
      1. VTFavorite
    3. VO
      singulars
      1. POAccess parent datacontext in listbox in Silverlight
      1. This table or related slice is empty.
      1. VTUpMod
    1. CODo you have any way to change your accepted answer? The one below, by Roboblob, is a correct answer. The accepted answer is incorrect for Silverlight and misleading.
      singulars
      1. POAccess parent datacontext in listbox in Silverlight
      1. USGone Coding
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload