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Boucle WPF Infinite dans les références trouvées lors du traitement du modèle - wpf, xaml

Je suis assez nouveau sur WPF et j'obtiens cette erreur une fois que ma souris a survolé mon élément de zone de liste personnalisé.

Erreur: boucle infinie dans les références trouvées lors du traitement du modèle pour un élément nommé "" de type "System.Windows.Controls.TextBox".

 <Window.Resources>

<ControlTemplate x:Key="MouseOverFocusTemplate" >
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="55*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBox Width="290" TextAlignment="Left" VerticalContentAlignment="Center" BorderThickness="0" BorderBrush="Transparent"
Foreground="#FF6FB8FD"
FontSize="24"
TextWrapping="Wrap"
Text="{Binding .}"
Grid.Column="1"
Grid.Row="1"
MinHeight="55"
Cursor="Hand"
IsReadOnly="True"
FontFamily="Arial"
>
<TextBox.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FF013B73" Offset="0.501"/>
<GradientStop Color="#FF091F34"/>
<GradientStop Color="#FF014A8F" Offset="0.5"/>
<GradientStop Color="#FF003363" Offset="1"/>
</LinearGradientBrush>
</TextBox.Background>

</TextBox>
</Grid>
</ControlTemplate>
<Style x:Key="MouseOverFocusStyle" TargetType="{x:Type TextBox}">
<Setter Property="Template" Value="{StaticResource MouseOverFocusTemplate}"/>
</Style>


<ControlTemplate x:Key="LostFocusTemplate" >
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="55*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBox Width="290" TextAlignment="Left" VerticalContentAlignment="Center" BorderThickness="0" BorderBrush="Transparent"
Foreground="#FF6FB8FD"
FontSize="24"
TextWrapping="Wrap"
Text="{Binding .}"
Grid.Column="1"
Grid.Row="1"
MinHeight="55"
Cursor="Hand"
IsReadOnly="True"
FontFamily="Arial"
>
<TextBox.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<LinearGradientBrush.RelativeTransform>
<TransformGroup>
<ScaleTransform CenterX="0.5" CenterY="0.5"/>
<SkewTransform CenterX="0.5" CenterY="0.5"/>
<RotateTransform CenterX="0.5" CenterY="0.5"/>
<TranslateTransform/>
</TransformGroup>
</LinearGradientBrush.RelativeTransform>
<GradientStop Color="#FF091F34" Offset="1"/>
<GradientStop Color="#FF002F5C" Offset="0.4"/>
</LinearGradientBrush>
</TextBox.Background>

</TextBox>
</Grid>
</ControlTemplate>
<Style x:Key="LostFocusStyle" TargetType="{x:Type TextBox}">
<Setter Property="Template" Value="{StaticResource LostFocusTemplate}"/>
</Style>

<ControlTemplate x:Key="GotFocusTemplate" >
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="55*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBox Width="290" TextAlignment="Left" VerticalContentAlignment="Center" BorderThickness="0" BorderBrush="Transparent"
Foreground="#FFE38E27"
FontSize="24"
TextWrapping="Wrap"
Text="{Binding .}"
Grid.Column="1"
Grid.Row="1"
MinHeight="55"
Cursor="Hand"
IsReadOnly="True"
FontFamily="Arial"
>
<TextBox.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Black" Offset="0.501"/>
<GradientStop Color="#FF091F34"/>
<GradientStop Color="#FF002F5C" Offset="0.5"/>
</LinearGradientBrush>
</TextBox.Background>

</TextBox>
</Grid>
</ControlTemplate>
<Style x:Key="GotFocusStyle" TargetType="{x:Type TextBox}">
<Setter Property="Template" Value="{StaticResource GotFocusTemplate}"/>
</Style>

<Style TargetType="ListBoxItem">
<EventSetter Event="GotFocus" Handler="ListItem_GotFocus"></EventSetter>
<EventSetter Event="LostFocus" Handler="ListItem_LostFocus"></EventSetter>
<EventSetter Event="Mouse.MouseMove" Handler="ListItem_MouseOver"></EventSetter>
</Style>

<DataTemplate DataType="{x:Type TextBlock}">
</DataTemplate>

<DataTemplate x:Key="CustomListData" DataType="{x:Type ListBoxItem}">
<Border BorderBrush="Black" BorderThickness="1" Margin="-2,0,0,-1">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="55*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RenderTransform>
<TransformGroup>
<ScaleTransform ScaleX="1" ScaleY="1"/>
<SkewTransform AngleX="0" AngleY="0"/>
<RotateTransform Angle="0"/>
<TranslateTransform X="0" Y="0"/>
</TransformGroup>
</Grid.RenderTransform>
<!--<ScrollViewer x:Name="PART_ContentHost" />-->
<TextBox Width="290" TextAlignment="Left" VerticalContentAlignment="Center" BorderThickness="0" BorderBrush="Transparent"
Foreground="#FF6FB8FD"
FontSize="24"
FocusVisualStyle="{StaticResource GotFocusStyle}"
TextWrapping="Wrap"
Text="{Binding .}"
Grid.Column="1"
Grid.Row="1"
MinHeight="55"
Cursor="Hand"
IsReadOnly="True"
FontFamily="Arial"
>
<TextBox.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<LinearGradientBrush.RelativeTransform>
<TransformGroup>
<ScaleTransform CenterX="0.5" CenterY="0.5"/>
<SkewTransform CenterX="0.5" CenterY="0.5"/>
<RotateTransform CenterX="0.5" CenterY="0.5"/>
<TranslateTransform/>
</TransformGroup>
</LinearGradientBrush.RelativeTransform>
<GradientStop Color="#FF091F34" Offset="1"/>
<GradientStop Color="#FF002F5C" Offset="0.4"/>
</LinearGradientBrush>
</TextBox.Background>

</TextBox>
</Grid>
</Border>
</DataTemplate>

<Style TargetType="{x:Type ListBox}">
<Setter Property="ItemTemplate" Value="{StaticResource CustomListData }" />
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Disabled" />
</Style>

</Window.Resources>

<Window.DataContext>
<ObjectDataProvider
ObjectType="{x:Type local:ImageLoader}"
MethodName="LoadImages"
/>
</Window.DataContext>

<ListBox ItemsSource="{Binding}" Width="320" Background="#FF021422" BorderBrush="#FF1C4B79">

<ListBox.Resources>
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}">Transparent</SolidColorBrush>
</ListBox.Resources>

</ListBox>

Le code derrière pour la souris sur l'événement est le suivant

private void ListItem_MouseOver(object sender, RoutedEventArgs e)
{
e.Handled = true;
FrameworkElement element = e.OriginalSource as FrameworkElement;
if (element != null)
{
while (VisualTreeHelper.GetParent(element) != null)
{
element = VisualTreeHelper.GetParent(element) as FrameworkElement;
TextBox item = element as TextBox;
if (item != null)
{
item.Style = (Style)item.FindResource("MouseOverFocusStyle");
return;
}

}
}
}

Qu'est-ce que je rate? Existe-t-il un moyen plus simple de procéder?

Merci d'avance Ryan

Réponses:

1 pour la réponse № 1

Je pense que vous essayez de le faire à la dure, les modèles de contrôle prennent en charge les événements (appelés déclencheurs). http://msdn.microsoft.com/en-us/library/ms750821%28VS.85%29.aspx

Mise à jour: Ok, je pense que je vois quel est votre problème, vous définissez un style pour le type TextBox, puis placez un TextBox dans le style. Vous devriez toujours pouvoir combiner tous vos styles en un en utilisant des déclencheurs

Exemple

<Style x:Key="{x:Type TextBox}" TargetType="{x:Type TextBoxBase}">
<Setter Property="SnapsToDevicePixels" Value="True"/>
<Setter Property="OverridesDefaultStyle" Value="True"/>
<Setter Property="KeyboardNavigation.TabNavigation" Value="None"/>
<Setter Property="FocusVisualStyle" Value="{x:Null}"/>
<Setter Property="AllowDrop" Value="true"/>
<Setter Property="Margin" Value="2" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TextBoxBase}">
<Border
Name="Border"
CornerRadius="2"
Padding="2"
Background="{DynamicResource TextBoxBackBrush}"
BorderBrush="{StaticResource SolidBorderBrush}"
BorderThickness="1" >
<ScrollViewer Margin="0" x:Name="PART_ContentHost"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter TargetName="Border" Property="Background" Value="{StaticResource PressedBrush}"/>
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource DisabledBackgroundBrush}"/>
<Setter Property="Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>