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POSilverlight 4 : TreeView/ HierarchicalDataTemplate/ AutoExpand Issue
 

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  1. POSilverlight 4 : TreeView/ HierarchicalDataTemplate/ AutoExpand Issue
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    <p>I have a treeview control in my silverlight application which uses 2 HierarchicalDataTemplate(s) to show data in a rquired format. I would like to have this tree autoexpanded when open for first time (preferably, a code snippet which i may call any time i want).</p> <p>Any alternatives to the given code would also be welcome.</p> <pre><code>&lt;sdk:TreeView x:Name="tvPageManager" Style="{StaticResource PageManagerStyle}" ScrollViewer.HorizontalScrollBarVisibility="Hidden" ScrollViewer.VerticalScrollBarVisibility="Auto"&gt; &lt;sdk:TreeView.ItemTemplate&gt; &lt;sdk:HierarchicalDataTemplate ItemsSource="{Binding KeyPoints, Mode=TwoWay}"&gt; &lt;StackPanel Orientation="Horizontal"&gt; &lt;ToolTipService.ToolTip&gt; &lt;ToolTip Content="{Binding PageName}" Style="{StaticResource ToolTipStyle}"/&gt; &lt;/ToolTipService.ToolTip&gt; &lt;Image x:Name="imgPageIcon" Source="{Binding PageIconImage}" Style="{StaticResource PageIconStyle}" Tag="{Binding BurstPageId, Mode=TwoWay}" /&gt; &lt;TextBlock x:Name="tbkLiteralTextPage" Text="Page " Style="{StaticResource PageNameLiteralTextBlockStyle}" /&gt; &lt;TextBox x:Name="tbPageName" Text="{Binding PageName, Mode=TwoWay}" Style="{StaticResource PageNameTextBoxStyle}" /&gt; &lt;/StackPanel&gt; &lt;sdk:HierarchicalDataTemplate.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;StackPanel Orientation="Horizontal"&gt; &lt;Image x:Name="imgKeypointIcon" Source="../Assets/Images/bullet_yellow.png" Style="{StaticResource KeypointIconStyle}"/&gt; &lt;TextBlock x:Name="tbkKeypointTitle" Text="{Binding Title, Mode=TwoWay}" Style="{StaticResource KeypointNameTextBlockStyle}" /&gt; &lt;StackPanel x:Name="spnlMoveImages" Orientation="Horizontal" HorizontalAlignment="Right" Width="30"&gt; &lt;Image x:Name="imgMoveUp" Source="../Assets/Images/up_arrow.png" Style="{StaticResource MoveIconsStyle}" Tag="{Binding KeyPointId}"/&gt; &lt;Image x:Name="imgMoveDn" Source="../Assets/Images/down_arrow.png" Style="{StaticResource MoveIconsStyle}" Tag="{Binding KeyPointId}"/&gt; &lt;/StackPanel&gt; &lt;/StackPanel&gt; &lt;/DataTemplate&gt; &lt;/sdk:HierarchicalDataTemplate.ItemTemplate&gt; &lt;/sdk:HierarchicalDataTemplate&gt; &lt;/sdk:TreeView.ItemTemplate&gt; &lt;/sdk:TreeView&gt; </code></pre> <p>This control is bound to a Observable list of BurstPage class. The complete data structure is as;</p> <p>The parent element is Burst object which contains 1 to n BurstPage objects, Any given BurstPage may have 1 to n Keypoint objects in it.</p> <p>BurstPage.Name (say 1) Keypoint.Name (say A) Keypoint.Name (say B) Keypoint.Name (say C) BurstPage.Name (say 2) BurstPage.Name (say 3) Keypoint.Name (say D) Keypoint.Name (say E)</p>
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    1. USAkash Lomas
    1. USAkash Lomas
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    1. This table or related slice is empty.
 

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