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POHow to modify Silverlight template at runtime?
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  1. POHow to modify Silverlight template at runtime?
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    copied!<p>I have a custom control containing a path that has a templated tooltip. I want to be able to get a reference to a grid in the template at runtime so that I can modify it's children depending on use. </p> <p>I thought I could use GetTemplateChild to get a reference to the grid in the template from within the OnApplyTemplate method of the control but this method is not firing. </p> <pre><code>public override void OnApplyTemplate() { base.OnApplyTemplate(); _tooltipDetails = (Grid)GetTemplateChild("TooltipDetailsGrid"); } </code></pre> <p>How else might I be able to do this?</p> <p>Here is the user control's XAML.</p> <pre><code>&lt;UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" x:Class="MiX.AssetManagement.UI.Timeline.Silverlight.TimelineBarRibbonItem" FontSize="9.333" Foreground="White" mc:Ignorable="d"&gt; &lt;UserControl.Resources&gt; &lt;ControlTemplate x:Key="ToolTipControlTemplateTimelineView" TargetType="ToolTip"&gt; &lt;StackPanel Orientation="Horizontal" Margin="16,0,0,0"&gt; &lt;VisualStateManager.VisualStateGroups&gt; &lt;VisualStateGroup x:Name="OpenStates"&gt; &lt;VisualState x:Name="Closed"/&gt; &lt;VisualState x:Name="Open"/&gt; &lt;/VisualStateGroup&gt; &lt;/VisualStateManager.VisualStateGroups&gt; &lt;Border CornerRadius="4"&gt; &lt;Border.Background&gt; &lt;LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"&gt; &lt;GradientStop Color="#7F000000" Offset="0"/&gt; &lt;GradientStop Color="#B2000000" Offset="1"/&gt; &lt;/LinearGradientBrush&gt; &lt;/Border.Background&gt; &lt;Grid Margin="4"&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition/&gt; &lt;ColumnDefinition/&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;Border x:Name="Info" Height="16" Width="16" BorderThickness="2" CornerRadius="8" HorizontalAlignment="Left" VerticalAlignment="Top"&gt; &lt;Border.BorderBrush&gt; &lt;LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"&gt; &lt;GradientStop Color="White" Offset="0"/&gt; &lt;GradientStop Color="#7FFFFFFF" Offset="1"/&gt; &lt;/LinearGradientBrush&gt; &lt;/Border.BorderBrush&gt; &lt;Path Fill="White" Stretch="Fill" Margin="5.229,2.089,5.035,2.82" RenderTransformOrigin="0.5,0.5" UseLayoutRounding="False" Data="M0.77471197,5.0623446 L2.4198356,5.0623446 L2.4198356,10.18 L0.77471197,10.18 z M0.72914064,3.0891075 L2.4654069,3.0891075 L2.4654069,4.3332038 L0.72914064,4.3332038 z"&gt; &lt;Path.RenderTransform&gt; &lt;TransformGroup&gt; &lt;ScaleTransform/&gt; &lt;SkewTransform/&gt; &lt;RotateTransform/&gt; &lt;TranslateTransform/&gt; &lt;/TransformGroup&gt; &lt;/Path.RenderTransform&gt; &lt;/Path&gt; &lt;/Border&gt; &lt;ContentPresenter d:LayoutOverrides="Width, Height" Margin="20,0,0,0"/&gt; &lt;Grid Grid.Column="1" x:Name="TooltipDetailsGrid"&gt; &lt;TextBlock Text="Tooltip in a Grid"/&gt; &lt;/Grid&gt; &lt;/Grid&gt; &lt;/Border&gt; &lt;/StackPanel&gt; &lt;/ControlTemplate&gt; &lt;/UserControl.Resources&gt; &lt;Path x:Name="RibbonItem" Cursor="Hand"&gt; &lt;Path.Fill&gt; &lt;LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"&gt; &lt;GradientStop Color="#FF66CC33"/&gt; &lt;GradientStop Color="#FF339900" Offset="1"/&gt; &lt;/LinearGradientBrush&gt; &lt;/Path.Fill&gt; &lt;ToolTipService.ToolTip&gt; &lt;ToolTip x:Name="RibbonItemTooltip" Content="" Foreground="#FFFFFFFF" FontSize="9.333" Placement="Mouse" Template="{StaticResource ToolTipControlTemplateTimelineView}"/&gt; &lt;/ToolTipService.ToolTip&gt; &lt;Path.Data&gt; &lt;GeometryGroup x:Name="RibbonItemGeometryGroup"&gt; &lt;RectangleGeometry x:Name="RibbonItemBackground" /&gt; &lt;/GeometryGroup&gt; &lt;/Path.Data&gt; &lt;/Path&gt; &lt;/UserControl&gt; </code></pre>
 

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