L'obtention de la date de DatePicker dans le format aaaa/MM/jj

J'ai un WPF application en C# (.NET 4.0) et j'ai un sélecteur de date. Je voudrais savoir si je peux changer le format de la date (la propriété text du sélecteur de date) à la yyyy/MM/dd format.

Je suis en utilisant le pattern MVVM, donc je voudrais savoir le code XAML, si c'est possible de le faire dans ce lieu.

InformationsquelleAutor | 2012-12-22

c#datepicker mvvm wpf xaml

Je peux utiliser ce code:

<DatePicker SelectedDate="{Binding myVideModelProperty}"
                    Height="25" HorizontalAlignment="Left" Margin="81,-2,0,0" Name="myDatePicker" VerticalAlignment="Top" Width="115">
            <DatePicker.Resources>
                <Style TargetType="{x:Type DatePickerTextBox}">
                    <Setter Property="Control.Template">
                        <Setter.Value>
                            <ControlTemplate>
                                <TextBox x:Name="PART_TextBox" 
                                    Text="{Binding Path=SelectedDate, RelativeSource={RelativeSource AncestorType={x:Type DatePicker}}, StringFormat={}{0:yyyy/MM/dd}}" />
                            </ControlTemplate>
                        </Setter.Value>
                    </Setter>
                </Style>
            </DatePicker.Resources>
        </DatePicker>

En utilisant le datePicker de ressources que j'pouvez définir le format de sa zone de texte. De cette façon, Il n'est pas besoin d'un convertisseur, ni d'un modèle général et de tout autre code supplémentaire.

InformationsquelleAutor Álvaro García

1

Selon cette post vous pouvez changer la culture pour obtenir le bon format de date
```
System.Globalization.CultureInfo culInfo = new System.Globalization.CultureInfo("en-us");
System.Globalization.DateTimeFormatInfo dtinfo = new System.Globalization.DateTimeFormatInfo();
dtinfo.ShortDatePattern = "yyyy/MM/dd";
```
- mais c'est dans le axml? Je voudrais utiliser le pattern MVVM. Merci.
- Ce n'est pas mis dans le code xaml, pourriez-vous s'il vous plaît insérer som code dans votre exemple, alors je peux comprendre le problème plus clairement.
- MVVM “ne signifie pas " tout faire en XAML”.
- mais je pense que la présentation qu'il le ferait dans la axml. Si j'ai un multi-langue de l'application, je veux seulement changer le format de la date, et cela, je pense que c'est de la responsabilité de l'axml.
- Il n'est pas possible dans le code Xaml pour spécifier un format. Si vos choix sont: ajuster les paramètres de culture, ou de reconstruire le contrôle pour prendre en charge les formats de date. MS n'a pas pensé à tout, et si nous avons dû attendre pour que cela se produise avant ils ont sorti quoi que ce soit, nous serions probablement la chance de l'avoir .Net 1.0 beta maintenant. 🙂
InformationsquelleAutor Mattias Josefsson

De les utiliser pour la Template pour votre datepicker et utiliser ce convertisseur de valeurs. Dans le modèle, la ligne avec DatePickerTextBox a été modifié pour utiliser la yyyy/MM/dd format (via le convertisseur que vous avez demandées. Le modèle que j'ai modifié est venu de ici.

Exemple d'utilisation:

<DatePicker Template="{StaticResource SpecialDatePicker}" SelectedDate="{Binding Path=Date}" />

Valeur convertisseur de code:

public class DateFixerConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return DateTime.Parse((string)value).ToString("yyyy/MM/dd");
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return DateTime.Parse((string) value);
    }
}

Code de modèle:

    <ControlTemplate x:Key="SpecialDatePicker" TargetType="DatePicker">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}" Padding="{TemplateBinding Control.Padding}" BorderBrush="{TemplateBinding Border.BorderBrush}" Background="{TemplateBinding Panel.Background}">
<Grid Name="PART_Root" HorizontalAlignment="{TemplateBinding Control.HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding Control.VerticalContentAlignment}">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Grid.Resources>
<SolidColorBrush x:Key="DisabledBrush">#A5FFFFFF</SolidColorBrush>
<ControlTemplate TargetType="Button" x:Key="DropDownButtonTemplate">
<Grid>
<Grid Background="#11FFFFFF" Width="19" Height="18" FlowDirection="LeftToRight" Margin="0,0,0,0" HorizontalAlignment="Center" VerticalAlignment="Center">
<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 BorderThickness="1,1,1,1" CornerRadius="0,0,1,1" BorderBrush="#FF45D6FA" Name="Highlight" Margin="-1,-1,-1,-1" Opacity="0" Grid.Row="0" Grid.ColumnSpan="4" Grid.RowSpan="4" />
<Border BorderThickness="1,1,1,1" CornerRadius="0.5,0.5,0.5,0.5" BorderBrush="#FFFFFFFF" Background="#FF1F3B53" Name="Background" Margin="0,-1,0,0" Opacity="1" Grid.Row="1" Grid.ColumnSpan="4" Grid.RowSpan="3" />
<Border BorderThickness="1,1,1,1" CornerRadius="0.5,0.5,0.5,0.5" BorderBrush="#BF000000" Name="BackgroundGradient" Margin="0,-1,0,0" Opacity="1" Grid.Row="1" Grid.ColumnSpan="4" Grid.RowSpan="3">
<Border.Background>
<LinearGradientBrush StartPoint="0.7,0" EndPoint="0.7,1">
<LinearGradientBrush.GradientStops>
<GradientStop Color="#FFFFFFFF" Offset="0" />
<GradientStop Color="#F9FFFFFF" Offset="0.375" />
<GradientStop Color="#E5FFFFFF" Offset="0.625" />
<GradientStop Color="#C6FFFFFF" Offset="1" />
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Border.Background>
</Border>
<Rectangle StrokeThickness="1" Grid.ColumnSpan="4" Grid.RowSpan="1">
<Rectangle.Fill>
<LinearGradientBrush StartPoint="0.46,1.6" EndPoint="0.3,-1.1">
<LinearGradientBrush.GradientStops>
<GradientStop Color="#FF4084BD" />
<GradientStop Color="#FFAFCFEA" Offset="1" />
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Rectangle.Fill>
<Rectangle.Stroke>
<LinearGradientBrush StartPoint="0.48,1.25" EndPoint="0.48,-1">
<LinearGradientBrush.GradientStops>
<GradientStop Color="#FF494949" />
<GradientStop Color="#FF9F9F9F" Offset="1" />
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Rectangle.Stroke>
</Rectangle>
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<Ellipse Fill="#FFFFFFFF" StrokeThickness="0" Width="3" Height="3" HorizontalAlignment="Center" VerticalAlignment="Center" Grid.ColumnSpan="4" />
<Border BorderThickness="1,1,1,1" CornerRadius="0,0,0.5,0.5" BorderBrush="#B2FFFFFF" Name="DisabledVisual" Opacity="0" Grid.Row="0" Grid.ColumnSpan="4" Grid.RowSpan="4" />
</Grid>
</Grid>
</ControlTemplate>
</Grid.Resources>
<Button Foreground="{TemplateBinding TextElement.Foreground}" Name="PART_Button" Width="20" Margin="3,0,3,0" HorizontalAlignment="Left" VerticalAlignment="Top" Focusable="False" Grid.Column="1" Grid.Row="0">
<Button.Template>
<ControlTemplate TargetType="Button">
<Grid>
<Grid Background="#11FFFFFF" Width="19" Height="18" FlowDirection="LeftToRight" Margin="0,0,0,0" HorizontalAlignment="Center" VerticalAlignment="Center">
<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 BorderThickness="1,1,1,1" CornerRadius="0,0,1,1" BorderBrush="#FF45D6FA" Name="Highlight" Margin="-1,-1,-1,-1" Opacity="0" Grid.Row="0" Grid.ColumnSpan="4" Grid.RowSpan="4" />
<Border BorderThickness="1,1,1,1" CornerRadius="0.5,0.5,0.5,0.5" BorderBrush="#FFFFFFFF" Background="#FF1F3B53" Name="Background" Margin="0,-1,0,0" Opacity="1" Grid.Row="1" Grid.ColumnSpan="4" Grid.RowSpan="3" />
<Border BorderThickness="1,1,1,1" CornerRadius="0.5,0.5,0.5,0.5" BorderBrush="#BF000000" Name="BackgroundGradient" Margin="0,-1,0,0" Opacity="1" Grid.Row="1" Grid.ColumnSpan="4" Grid.RowSpan="3">
<Border.Background>
<LinearGradientBrush StartPoint="0.7,0" EndPoint="0.7,1">
<LinearGradientBrush.GradientStops>
<GradientStop Color="#FFFFFFFF" Offset="0" />
<GradientStop Color="#F9FFFFFF" Offset="0.375" />
<GradientStop Color="#E5FFFFFF" Offset="0.625" />
<GradientStop Color="#C6FFFFFF" Offset="1" />
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Border.Background>
</Border>
<Rectangle StrokeThickness="1" Grid.ColumnSpan="4" Grid.RowSpan="1">
<Rectangle.Fill>
<LinearGradientBrush StartPoint="0.46,1.6" EndPoint="0.3,-1.1">
<LinearGradientBrush.GradientStops>
<GradientStop Color="#FF4084BD" />
<GradientStop Color="#FFAFCFEA" Offset="1" />
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Rectangle.Fill>
<Rectangle.Stroke>
<LinearGradientBrush StartPoint="0.48,1.25" EndPoint="0.48,-1">
<LinearGradientBrush.GradientStops>
<GradientStop Color="#FF494949" />
<GradientStop Color="#FF9F9F9F" Offset="1" />
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Rectangle.Stroke>
</Rectangle>
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<Ellipse Fill="#FFFFFFFF" StrokeThickness="0" Width="3" Height="3" HorizontalAlignment="Center" VerticalAlignment="Center" Grid.ColumnSpan="4" />
<Border BorderThickness="1,1,1,1" CornerRadius="0,0,0.5,0.5" BorderBrush="#B2FFFFFF" Name="DisabledVisual" Opacity="0" Grid.Row="0" Grid.ColumnSpan="4" Grid.RowSpan="4" />
</Grid>
</Grid>
</ControlTemplate>
</Button.Template>
</Button>
<!-- THIS LINE :: Notice the binding for Text -->
<DatePickerTextBox  Text="{Binding RelativeSource={RelativeSource AncestorType=DatePicker},Path=Text,Converter={StaticResource DateFixer}}" Foreground="{TemplateBinding TextElement.Foreground}" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" Name="PART_TextBox" Grid.Column="0" Grid.Row="0" xml:space="preserve"></DatePickerTextBox>
<Grid Name="PART_DisabledVisual" Opacity="0" IsHitTestVisible="False" Grid.Column="0" Grid.Row="0" Grid.ColumnSpan="2">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Rectangle RadiusX="1" RadiusY="1" Fill="#A5FFFFFF" Grid.Column="0" Grid.Row="0" />
<Rectangle RadiusX="1" RadiusY="1" Fill="#A5FFFFFF" Width="19" Height="18" Margin="3,0,3,0" Grid.Column="1" Grid.Row="0" />
<Popup Placement="Bottom" StaysOpen="False" AllowsTransparency="True" Name="PART_Popup" />
</Grid>
</Grid>
</Border>
</ControlTemplate>

InformationsquelleAutor mlorbetske

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