Je développe une application de vérification de numéro de document et j'ai écrit un comportement attaché à la boîte de texte pour vérifier le texte. Voici le code du comportement :
public class CPFTextBehavior : Behavior<TextBox>
{
static readonly DependencyPropertyKey IsCPFPropertyKey =
DependencyProperty.RegisterAttachedReadOnly("IsCPF", typeof(bool), typeof(CPFTextBehavior),
new FrameworkPropertyMetadata(false));
public static readonly DependencyProperty IsCPFProperty = IsCPFPropertyKey.DependencyProperty;
public static bool GetIsCPF(TextBox tb)
{
return (bool)tb.GetValue(IsCPFProperty);
}
public bool IsCPF
{
get { return GetIsCPF(AssociatedObject); }
private set { AssociatedObject.SetValue(IsCPFPropertyKey, value); }
}
protected override void OnAttached()
{
base.OnAttached();
AssociatedObject.TextChanged += LocusProject.Validacao.CPF_CNPJValidation.ValidateCPF;
AssociatedObject.PreviewTextInput += LocusProject.Validacao.CPF_CNPJValidation.ValidateCPFMask;
DataObject.AddPastingHandler(AssociatedObject, LocusProject.Validacao.CPF_CNPJValidation.PastingCPFMask);
AssociatedObject.PreviewKeyDown += Interactivity.PreventInsertKey;
}
protected override void OnDetaching()
{
base.OnDetaching();
AssociatedObject.TextChanged -= LocusProject.Validacao.CPF_CNPJValidation.ValidateCPF;
AssociatedObject.PreviewTextInput -= LocusProject.Validacao.CPF_CNPJValidation.ValidateCPFMask;
DataObject.RemovePastingHandler(AssociatedObject, LocusProject.Validacao.CPF_CNPJValidation.PastingCPFMask);
AssociatedObject.PreviewKeyDown -= Interactivity.PreventInsertKey;
}
}
Et voici ce que je fais sur mon ResourceDictionary :
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:i="clr-namespace:LocusProject">
<Style TargetType="{x:Type TextBox}" x:Key="TextFields">
<Setter Property="BorderBrush" Value="DarkBlue"/>
<Setter Property="BorderThickness" Value="1"/>
<Style.Triggers>
<EventTrigger RoutedEvent="TextBox.GotFocus">
<EventTrigger.Actions>
<BeginStoryboard>
<Storyboard>
<ColorAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0000000" Value="White"/>
<SplineColorKeyFrame KeyTime="00:00:00.3500000" Value="LightBlue"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
<EventTrigger RoutedEvent="TextBox.LostFocus">
<EventTrigger.Actions>
<BeginStoryboard>
<Storyboard>
<ColorAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0000000" Value="LightBlue"/>
<SplineColorKeyFrame KeyTime="00:00:00.3500000" Value="White"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
</Style.Triggers>
</Style>
<Style TargetType="{x:Type TextBox}" x:Key="CPFField" BasedOn="{StaticResource TextFields}">
<Setter Property="i:CPFTextBehavior.IsCPF" Value="True" />
</Style>
Mais voilà. Il est écrit "Exception has been thrown by the target of invocation" et je n'arrive pas à le faire fonctionner.
Est-ce que je fais quelque chose de mal ? Merci d'avance.