Comment sélectionner le bouton par défaut dans la boîte de dialogue wpf ?

Question

Je crée une boîte de dialogue WPF. C'est comme notre bouton normal messagebox avec ok et cancel. Comment créer une telle boîte de dialogue de sorte que le bouton Ok soit sélectionné lorsque la boîte de dialogue est ouverte ?

Answer 1

il suffit de créer un nouveau modèle de bouton et de modifier l'apparence de l'état IsDefault=Tue. Je viens de créer un style et de modifier l'état.

<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:System="clr-namespace:System;assembly=mscorlib"
xmlns:Microsoft_Windows_Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero"
x:Class="WpfApplication7.Window3"
x:Name="Window"
Title="Window3"
Width="640" Height="480" FocusManager.FocusedElement="{Binding ElementName=test}">

<Window.Resources>
    <Style x:Key="ButtonFocusVisual">
        <Setter Property="Control.Template">
            <Setter.Value>
                <ControlTemplate>
                    <Rectangle Margin="2"
                    Stroke="red" StrokeThickness="1"
                     SnapsToDevicePixels="true"  StrokeDashArray="1 2"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <Style x:Key="ButtonStyle1" TargetType="{x:Type Button}">
        <Setter Property="FocusVisualStyle" Value="{StaticResource ButtonFocusVisual}"/>
        <Setter Property="HorizontalContentAlignment" Value="Center"/>
        <Setter Property="VerticalContentAlignment" Value="Center"/>
        <Setter Property="Padding" Value="1"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Button}">
                    <Border x:Name="border" BorderThickness="1" BorderBrush="#FF040000" CornerRadius="5">
                        <Border.Background>
                            <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                                <GradientStop Color="#FF7A7A7A" Offset="0"/>
                                <GradientStop Color="#FFE7E7E7" Offset="1"/>
                            </LinearGradientBrush>
                        </Border.Background>
                        <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                    </Border>
                    <ControlTemplate.Triggers>
                                                    <Trigger Property="IsDefault" Value="True">
                            <Setter Property="Background" TargetName="border">
                                <Setter.Value>
                                    <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                                        <GradientStop Color="#FFA76F6F" Offset="0"/>
                                        <GradientStop Color="#FFE7E7E7" Offset="1"/>
                                    </LinearGradientBrush>
                                </Setter.Value>
                            </Setter>
                        </Trigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsFocused" Value="True"/>
                                <Condition Property="IsDefault" Value="True"/>
                            </MultiTrigger.Conditions>
                            <Setter Property="Background" TargetName="border">
                                <Setter.Value>
                                    <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                                        <GradientStop Color="#FFC2BE5B" Offset="0.007"/>
                                        <GradientStop Color="#FFE7E7E7" Offset="1"/>
                                    </LinearGradientBrush>
                                </Setter.Value>
                            </Setter>
                        </MultiTrigger>
                        <Trigger Property="IsPressed" Value="True">
                            <Setter Property="BorderBrush" TargetName="border" Value="#FF01641D"/>
                            <Setter Property="BorderThickness" TargetName="border" Value="2"/>
                            <Setter Property="Background" TargetName="border">
                                <Setter.Value>
                                    <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                                        <GradientStop Color="#FF528159" Offset="0"/>
                                        <GradientStop Color="#FFE7E7E7" Offset="1"/>
                                    </LinearGradientBrush>
                                </Setter.Value>
                            </Setter>
                        </Trigger>

                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources>

<Grid x:Name="LayoutRoot">
    <Button x:Name="test" Content="Button" HorizontalAlignment="Left" Height="26" Margin="130,157,0,0" VerticalAlignment="Top" Width="164" Style="{DynamicResource ButtonStyle1}" IsDefault="True"/>
    <Button Content="Button" Height="26" Margin="298,157,162,0" VerticalAlignment="Top" Style="{DynamicResource ButtonStyle1}"/>
    <Button Content="Button" HorizontalAlignment="Right" Height="26" Margin="0,157,-6,0" VerticalAlignment="Top" Width="164" Style="{DynamicResource ButtonStyle1}"/>
</Grid>

Answer 2

Et IsDefault ?

<Button Command="{Binding MyButtonCommand}"
        Content="My Button Text"
        IsDefault="True"/>