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Stili e modelli datePicker

In questo argomento vengono descritti gli stili e i modelli per il controllo DatePicker. È possibile modificare il ControlTemplate predefinito per assegnare al controllo un aspetto univoco. Per altre informazioni, vedere Creare un modello per un controllo.

Componenti del DatePicker

Nella tabella seguente sono elencate le parti denominate per il controllo DatePicker.

Parte Digitare Descrizione
PART_Root Grid Radice del controllo.
PART_Button Button Il pulsante che apre e chiude il Calendar.
PART_TextBox DatePickerTextBox Casella di testo che consente di immettere una data.
PART_Popup Popup Popup per il controllo DatePicker.

Stati DatePicker

Nella tabella seguente sono elencati gli stati di visualizzazione per il controllo DatePicker.

Nome VisualState Nome "VisualStateGroup" Descrizione
Normale StatiComuni Stato predefinito.
Disabile Stati Comuni Il DatePicker è disabilitato.
Valido StatiDiValidazione Il controllo utilizza la classe Validation e la proprietà associata Validation.HasError è false.
A fuoco non valido Stati di Validazione La proprietà associata Validation.HasError indica che true il controllo ha lo stato attivo.
InvalidoNonFocalizzato StatiDiValidazione La proprietà associata Validation.HasError è true quando il controllo non è a fuoco.

Parti di DatePickerTextBox

Nella tabella seguente sono elencate le parti denominate per il controllo DatePickerTextBox.

Parte Digitare Descrizione
PART_Watermark ContentControl Elemento che contiene il testo iniziale nella DatePicker.
PART_ElementoDiContenuto FrameworkElement Un elemento visivo che può contenere un FrameworkElement. Il testo del TextBox viene visualizzato in questo elemento.

Stati DatePickerTextBox

Nella tabella seguente sono elencati gli stati di visualizzazione per il controllo DatePickerTextBox.

Nome VisualState Nome del VisualStateGroup Descrizione
Normale CommonStates Stato predefinito.
Disabile StatiComuni Il DatePickerTextBox è disabilitato.
Passaggio del mouse StatiComuni Il puntatore del mouse è posizionato sulla DatePickerTextBox.
Sola lettura Stati Comuni L'utente non può modificare il testo nel DatePickerTextBox.
Focalizzato FocusStates Il controllo è in focus.
Sfocato FocusStates Il controllo non ha lo stato attivo.
Filigrana StatiDiFiligrana Il controllo visualizza il testo iniziale. Il DatePickerTextBox si trova nello stato in cui l'utente non ha immesso testo o ha selezionato una data.
Senza acqua WatermarkStates L'utente ha immesso testo nel DatePickerTextBox o ha selezionato una data nel DatePicker.
Valido Stati di Validazione Il controllo utilizza la classe Validation e la proprietà associata Validation.HasError è false.
FocusNonValido Stati di Convalida La proprietà collegata Validation.HasError è true e il controllo è attivo.
NonValidoNonFocalizzato Stati di Validazione La proprietà associata Validation.HasError è true e il controllo non ha lo stato attivo.

Esempio di controllo DatePickerTemplate

Nell'esempio seguente viene illustrato come definire un ControlTemplate per il controllo DatePicker.

<!--In this example, an implecit style for Calendar is defined elsewhere 
  in the application.  DatePickerCalendarStyle is based on the implicit 
  style so that the DatePicker will use the application's calendar style.-->
<Style x:Key="DatePickerCalendarStyle"
       TargetType="{x:Type Calendar}"
       BasedOn="{StaticResource {x:Type Calendar}}" />

<!--The template for the button that displays the calendar.-->
<Style x:Key="DropDownButtonStyle"
       TargetType="Button">
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type Button}">
        <Grid>
          <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="CommonStates">
              <VisualStateGroup.Transitions>
                <VisualTransition GeneratedDuration="0" />
                <VisualTransition GeneratedDuration="0:0:0.1"
                                  To="MouseOver" />
                <VisualTransition GeneratedDuration="0:0:0.1"
                                  To="Pressed" />
              </VisualStateGroup.Transitions>
              <VisualState x:Name="Normal" />
              <VisualState x:Name="MouseOver">
                <Storyboard>
                  <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[1].(GradientStop.Color)">
                    <SplineColorKeyFrame KeyTime="0"
                                         Value="#F2FFFFFF" />
                  </ColorAnimationUsingKeyFrames>
                  <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[2].(GradientStop.Color)">
                    <SplineColorKeyFrame KeyTime="0"
                                         Value="#CCFFFFFF" />
                  </ColorAnimationUsingKeyFrames>
                  <ColorAnimation Duration="0"
                                  To="#FF448DCA"
                                  Storyboard.TargetProperty="(Border.Background).
                            (SolidColorBrush.Color)"
                                  Storyboard.TargetName="Background" />
                  <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[3].(GradientStop.Color)">
                    <SplineColorKeyFrame KeyTime="0"
                                         Value="#7FFFFFFF" />
                  </ColorAnimationUsingKeyFrames>
                </Storyboard>
              </VisualState>
              <VisualState x:Name="Pressed">
                <Storyboard>
                  <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="Background"
                                                Storyboard.TargetProperty="(Border.Background).
                      (SolidColorBrush.Color)">
                    <SplineColorKeyFrame KeyTime="0"
                                         Value="#FF448DCA" />
                  </ColorAnimationUsingKeyFrames>
                  <DoubleAnimationUsingKeyFrames BeginTime="0"
                                                 Duration="00:00:00.001"
                                                 Storyboard.TargetProperty="(UIElement.Opacity)"
                                                 Storyboard.TargetName="Highlight">
                    <SplineDoubleKeyFrame KeyTime="0"
                                          Value="1" />
                  </DoubleAnimationUsingKeyFrames>
                  <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[0].(GradientStop.Color)">
                    <SplineColorKeyFrame KeyTime="0"
                                         Value="#F4FFFFFF" />
                  </ColorAnimationUsingKeyFrames>
                  <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[1].(GradientStop.Color)">
                    <SplineColorKeyFrame KeyTime="0"
                                         Value="#EAFFFFFF" />
                  </ColorAnimationUsingKeyFrames>
                  <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[2].(GradientStop.Color)">
                    <SplineColorKeyFrame KeyTime="0"
                                         Value="#C6FFFFFF" />
                  </ColorAnimationUsingKeyFrames>
                  <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[3].(GradientStop.Color)">
                    <SplineColorKeyFrame KeyTime="0"
                                         Value="#6BFFFFFF" />
                  </ColorAnimationUsingKeyFrames>
                </Storyboard>
              </VisualState>
              <VisualState x:Name="Disabled" />
            </VisualStateGroup>
          </VisualStateManager.VisualStateGroups>
          <Grid Background="#11FFFFFF"
                FlowDirection="LeftToRight"
                HorizontalAlignment="Center"
                Height="18"
                Margin="0"
                VerticalAlignment="Center"
                Width="19">
            <Grid.ColumnDefinitions>
              <ColumnDefinition Width="20*" />
              <ColumnDefinition Width="20*" />
              <ColumnDefinition Width="20*" />
              <ColumnDefinition Width="20*" />
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
              <RowDefinition Height="23*" />
              <RowDefinition Height="19*" />
              <RowDefinition Height="19*" />
              <RowDefinition Height="19*" />
            </Grid.RowDefinitions>
            <Border x:Name="Highlight"
                    BorderThickness="1"
                    Grid.ColumnSpan="4"
                    CornerRadius="0,0,1,1"
                    Margin="-1"
                    Opacity="1"
                    Grid.Row="0"
                    Grid.RowSpan="4">
              <Border.BorderBrush>
                <SolidColorBrush Color="{DynamicResource ControlPressedColor}" />
              </Border.BorderBrush>
            </Border>
            <Border x:Name="Background"
                    BorderBrush="#FFFFFFFF"
                    BorderThickness="1"
                    Grid.ColumnSpan="4"
                    CornerRadius=".5"
                    Margin="0,-1,0,0"
                    Opacity="1"
                    Grid.Row="1"
                    Grid.RowSpan="3">
              <Border.Background>
                <SolidColorBrush Color="{DynamicResource ControlDarkColor}" />
              </Border.Background>
            </Border>
            <Border x:Name="BackgroundGradient"
                    BorderBrush="#BF000000"
                    BorderThickness="1"
                    Grid.ColumnSpan="4"
                    CornerRadius=".5"
                    Margin="0,-1,0,0"
                    Opacity="1"
                    Grid.Row="1"
                    Grid.RowSpan="3">
              <Border.Background>
                <LinearGradientBrush EndPoint=".7,1"
                                     StartPoint=".7,0">
                  <GradientStop Color="#FFFFFFFF"
                                Offset="0" />
                  <GradientStop Color="#F9FFFFFF"
                                Offset="0.375" />
                  <GradientStop Color="#E5FFFFFF"
                                Offset="0.625" />
                  <GradientStop Color="#C6FFFFFF"
                                Offset="1" />
                </LinearGradientBrush>
              </Border.Background>
            </Border>
            <Rectangle Grid.ColumnSpan="4"
                       Grid.RowSpan="1"
                       StrokeThickness="1">
              <Rectangle.Fill>
                <LinearGradientBrush EndPoint="0,1"
                                     StartPoint="0,0">
                  <GradientStop Color="{DynamicResource HeaderTopColor}" />
                  <GradientStop Color="{DynamicResource ControlMediumColor}"
                                Offset="1" />
                </LinearGradientBrush>
              </Rectangle.Fill>
              <Rectangle.Stroke>
                <LinearGradientBrush EndPoint="0.48,-1"
                                     StartPoint="0.48,1.25">
                  <GradientStop Color="#FF494949" />
                  <GradientStop Color="#FF9F9F9F"
                                Offset="1" />
                </LinearGradientBrush>
              </Rectangle.Stroke>
            </Rectangle>
            <Path Fill="#FF2F2F2F"
                  Grid.Row="1"
                  Grid.Column="0"
                  Grid.RowSpan="3"
                  Grid.ColumnSpan="4"
                  HorizontalAlignment="Center"
                  VerticalAlignment="Center"
                  RenderTransformOrigin="0.5,0.5"
                  Margin="4,3,4,3"
                  Stretch="Fill"
                  Data="M11.426758,8.4305077 L11.749023,8.4305077 
                    L11.749023,16.331387 L10.674805,16.331387 
                    L10.674805,10.299648 L9.0742188,11.298672
                    L9.0742188,10.294277 C9.4788408,10.090176 
                    9.9094238,9.8090878 10.365967,9.4510155 
                    C10.82251,9.0929432 11.176106,8.7527733 
                    11.426758,8.4305077 z M14.65086,8.4305077 
                    L18.566387,8.4305077 L18.566387,9.3435936 
                    L15.671368,9.3435936 L15.671368,11.255703 
                    C15.936341,11.058764 16.27293,10.960293 
                    16.681133,10.960293 C17.411602,10.960293 
                    17.969301,11.178717 18.354229,11.615566 
                    C18.739157,12.052416 18.931622,12.673672
                    18.931622,13.479336 C18.931622,15.452317 
                    18.052553,16.438808 16.294415,16.438808
                    C15.560365,16.438808 14.951641,16.234707 
                    14.468243,15.826504 L14.881817,14.929531
                    C15.368796,15.326992 15.837872,15.525723 
                    16.289043,15.525723 C17.298809,15.525723 
                    17.803692,14.895514 17.803692,13.635098 
                    C17.803692,12.460618 17.305971,11.873379 
                    16.310528,11.873379 C15.83071,11.873379 
                    15.399232,12.079271 15.016094,12.491055
                    L14.65086,12.238613 z" />
            <Ellipse Grid.ColumnSpan="4"
                     Fill="#FFFFFFFF"
                     HorizontalAlignment="Center"
                     Height="3"
                     StrokeThickness="0"
                     VerticalAlignment="Center"
                     Width="3" />
            <Border x:Name="DisabledVisual"
                    BorderBrush="#B2FFFFFF"
                    BorderThickness="1"
                    Grid.ColumnSpan="4"
                    CornerRadius="0,0,.5,.5"
                    Opacity="0"
                    Grid.Row="0"
                    Grid.RowSpan="4" />
          </Grid>
        </Grid>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

<Style TargetType="{x:Type DatePicker}">
  <Setter Property="Foreground"
          Value="#FF333333" />
  <Setter Property="IsTodayHighlighted"
          Value="True" />
  <Setter Property="SelectedDateFormat"
          Value="Short" />
  <Setter Property="Padding"
          Value="2" />
  <Setter Property="BorderThickness"
          Value="1" />
  <Setter Property="HorizontalContentAlignment"
          Value="Stretch" />
  <!--Set CalendarStyle to DatePickerCalendarStyle.-->
  <Setter Property="CalendarStyle"
          Value="{DynamicResource DatePickerCalendarStyle}" />
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type DatePicker}">
        <Border BorderThickness="{TemplateBinding BorderThickness}"
                Padding="{TemplateBinding Padding}">
          <Border.BorderBrush>
            <LinearGradientBrush EndPoint="0.5,1"
                                 StartPoint="0.5,0">
              <GradientStop Color="{DynamicResource BorderLightColor}"
                            Offset="0" />
              <GradientStop Color="{DynamicResource BorderDarkColor}"
                            Offset="1" />
            </LinearGradientBrush>
          </Border.BorderBrush>
          <Border.Background>
            <LinearGradientBrush EndPoint="0.5,1"
                                 StartPoint="0.5,0">
              <GradientStop Color="{DynamicResource HeaderTopColor}"
                            Offset="0" />
              <GradientStop Color="{DynamicResource ControlMediumColor}"
                            Offset="1" />
            </LinearGradientBrush>
          </Border.Background>
          <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="CommonStates">
              <VisualState x:Name="Normal" />
              <VisualState x:Name="Disabled">
                <Storyboard>
                  <DoubleAnimation Duration="0"
                                   To="1"
                                   Storyboard.TargetProperty="Opacity"
                                   Storyboard.TargetName="PART_DisabledVisual" />
                </Storyboard>
              </VisualState>
            </VisualStateGroup>
          </VisualStateManager.VisualStateGroups>
          <Grid x:Name="PART_Root"
                HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
            <Grid.ColumnDefinitions>
              <ColumnDefinition Width="*" />
              <ColumnDefinition Width="Auto" />
            </Grid.ColumnDefinitions>
            <Button x:Name="PART_Button"
                    Grid.Column="1"
                    Foreground="{TemplateBinding Foreground}"
                    Focusable="False"
                    HorizontalAlignment="Left"
                    Margin="3,0,3,0"
                    Grid.Row="0"
                    Style="{StaticResource DropDownButtonStyle}"
                    VerticalAlignment="Top" />
            <DatePickerTextBox x:Name="PART_TextBox"
                               Grid.Column="0"
                               Foreground="{TemplateBinding Foreground}"
                               Focusable="{TemplateBinding Focusable}"
                               HorizontalContentAlignment="Stretch"
                               Grid.Row="0"
                               VerticalContentAlignment="Stretch" />
            <Grid x:Name="PART_DisabledVisual"
                  Grid.ColumnSpan="2"
                  Grid.Column="0"
                  IsHitTestVisible="False"
                  Opacity="0"
                  Grid.Row="0">
              <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="Auto" />
              </Grid.ColumnDefinitions>
              <Rectangle Grid.Column="0"
                         Fill="#A5FFFFFF"
                         RadiusY="1"
                         Grid.Row="0"
                         RadiusX="1" />
              <Rectangle Grid.Column="1"
                         Fill="#A5FFFFFF"
                         Height="18"
                         Margin="3,0,3,0"
                         RadiusY="1"
                         Grid.Row="0"
                         RadiusX="1"
                         Width="19" />
              <Popup x:Name="PART_Popup"
                     AllowsTransparency="True"
                     Placement="Bottom"
                     PlacementTarget="{Binding ElementName=PART_TextBox}"
                     StaysOpen="False" />
            </Grid>
          </Grid>
        </Border>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

Nell'esempio precedente viene utilizzata una o più delle risorse seguenti.

<!--Control colors.-->
<Color x:Key="WindowColor">#FFE8EDF9</Color>
<Color x:Key="ContentAreaColorLight">#FFC5CBF9</Color>
<Color x:Key="ContentAreaColorDark">#FF7381F9</Color>

<Color x:Key="DisabledControlLightColor">#FFE8EDF9</Color>
<Color x:Key="DisabledControlDarkColor">#FFC5CBF9</Color>
<Color x:Key="DisabledForegroundColor">#FF888888</Color>

<Color x:Key="SelectedBackgroundColor">#FFC5CBF9</Color>
<Color x:Key="SelectedUnfocusedColor">#FFDDDDDD</Color>

<Color x:Key="ControlLightColor">White</Color>
<Color x:Key="ControlMediumColor">#FF7381F9</Color>
<Color x:Key="ControlDarkColor">#FF211AA9</Color>

<Color x:Key="ControlMouseOverColor">#FF3843C4</Color>
<Color x:Key="ControlPressedColor">#FF211AA9</Color>


<Color x:Key="GlyphColor">#FF444444</Color>
<Color x:Key="GlyphMouseOver">sc#1, 0.004391443, 0.002428215, 0.242281124</Color>

<!--Border colors-->
<Color x:Key="BorderLightColor">#FFCCCCCC</Color>
<Color x:Key="BorderMediumColor">#FF888888</Color>
<Color x:Key="BorderDarkColor">#FF444444</Color>

<Color x:Key="PressedBorderLightColor">#FF888888</Color>
<Color x:Key="PressedBorderDarkColor">#FF444444</Color>

<Color x:Key="DisabledBorderLightColor">#FFAAAAAA</Color>
<Color x:Key="DisabledBorderDarkColor">#FF888888</Color>

<Color x:Key="DefaultBorderBrushDarkColor">Black</Color>

<!--Control-specific resources.-->
<Color x:Key="HeaderTopColor">#FFC5CBF9</Color>
<Color x:Key="DatagridCurrentCellBorderColor">Black</Color>
<Color x:Key="SliderTrackDarkColor">#FFC5CBF9</Color>

<Color x:Key="NavButtonFrameColor">#FF3843C4</Color>

<LinearGradientBrush x:Key="MenuPopupBrush"
                     EndPoint="0.5,1"
                     StartPoint="0.5,0">
  <GradientStop Color="{DynamicResource ControlLightColor}"
                Offset="0" />
  <GradientStop Color="{DynamicResource ControlMediumColor}"
                Offset="0.5" />
  <GradientStop Color="{DynamicResource ControlLightColor}"
                Offset="1" />
</LinearGradientBrush>

<LinearGradientBrush x:Key="ProgressBarIndicatorAnimatedFill"
                     StartPoint="0,0"
                     EndPoint="1,0">
  <LinearGradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#000000FF"
                    Offset="0" />
      <GradientStop Color="#600000FF"
                    Offset="0.4" />
      <GradientStop Color="#600000FF"
                    Offset="0.6" />
      <GradientStop Color="#000000FF"
                    Offset="1" />
    </GradientStopCollection>
  </LinearGradientBrush.GradientStops>
</LinearGradientBrush>

Per l'esempio completo, vedere Applicazione di stili con ControlTemplates Sample.

Vedere anche