我在Windows 10移动版的整个应用程序中都使用ContentDialogs.默认情况下,ContentDialog和MessageDialog似乎都倾向于锚定在屏幕顶部.但是,我已经看到一些应用程序,它垂直显示在屏幕中间,因此显示为条状.我不知道如何将其垂直放置在中间.我已经试过了
cd.VerticalAlignment = VerticalAlignment.Center;
cd是我的ContentDialog实例,但是不起作用.它仍然固定在窗口顶部.
谢谢!
解决方法:
您应该为ContentDialog覆盖Style.我尝试将VerticalAlignment.Center设置为Container,LayoutRoot和BackgroundElement,但这无济于事.因此,将BackgroundElement放置在LayoutRoot中Row的中心,只需添加新的RowDefinition并为BackgroundElement设置Grid.Row =“ 1”即可.
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
查看完整的ContentDialog样式.
笔记
但请注意,因为这仅适用于移动设备.您应仅将此样式应用于移动平台.
<ContentDialog.Style>
<Style TargetType="ContentDialog">
<Setter Property="Foreground" Value="{ThemeResource SystemControlPageTextBaseHighBrush}" />
<Setter Property="Background" Value="{ThemeResource SystemControlBackgroundChromeMediumLowBrush}" />
<Setter Property="HorizontalAlignment" Value="Center" />
<Setter Property="VerticalAlignment" Value="Top" />
<Setter Property="IsTabStop" Value="False" />
<Setter Property="MaxHeight" Value="{ThemeResource ContentDialogMaxHeight}" />
<Setter Property="MinHeight" Value="{ThemeResource ContentDialogMinHeight}" />
<Setter Property="MaxWidth" Value="{ThemeResource ContentDialogMaxWidth}" />
<Setter Property="MinWidth" Value="{ThemeResource ContentDialogMinWidth}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ContentDialog">
<Border x:Name="Container">
<Grid x:Name="LayoutRoot">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Border x:Name="BackgroundElement"
Grid.Row="1"
Background="{TemplateBinding Background}"
FlowDirection="{TemplateBinding FlowDirection}"
BorderThickness="{ThemeResource ContentDialogBorderWidth}"
BorderBrush="{ThemeResource SystemControlForegroundAccentBrush}"
MaxWidth="{TemplateBinding MaxWidth}"
MaxHeight="{TemplateBinding MaxHeight}"
MinWidth="{TemplateBinding MinWidth}"
MinHeight="{TemplateBinding MinHeight}" >
<Grid x:Name="DialogSpace" VerticalAlignment="Stretch">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<ScrollViewer x:Name="ContentScrollViewer"
HorizontalScrollBarVisibility="Disabled"
VerticalScrollBarVisibility="Disabled"
ZoomMode="Disabled"
Margin="{ThemeResource ContentDialogContentScrollViewerMargin}"
IsTabStop="False">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<ContentControl x:Name="Title"
Margin="{ThemeResource ContentDialogTitleMargin}"
Content="{TemplateBinding Title}"
ContentTemplate="{TemplateBinding TitleTemplate}"
FontSize="20"
FontFamily="XamlAutoFontFamily"
FontWeight="Normal"
Foreground="{TemplateBinding Foreground}"
HorizontalAlignment="Left"
VerticalAlignment="Top"
IsTabStop="False"
MaxHeight="{ThemeResource ContentDialogTitleMaxHeight}" >
<ContentControl.Template>
<ControlTemplate TargetType="ContentControl">
<ContentPresenter
Content="{TemplateBinding Content}"
MaxLines="2"
TextWrapping="Wrap"
ContentTemplate="{TemplateBinding ContentTemplate}"
Margin="{TemplateBinding Padding}"
ContentTransitions="{TemplateBinding ContentTransitions}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
</ControlTemplate>
</ContentControl.Template>
</ContentControl>
<ContentPresenter x:Name="Content"
ContentTemplate="{TemplateBinding ContentTemplate}"
Content="{TemplateBinding Content}"
FontSize="{ThemeResource ControlContentThemeFontSize}"
FontFamily="{ThemeResource ContentControlThemeFontFamily}"
Margin="{ThemeResource ContentDialogContentMargin}"
Foreground="{TemplateBinding Foreground}"
Grid.Row="1"
TextWrapping="Wrap" />
</Grid>
</ScrollViewer>
<Grid x:Name="CommandSpace" Grid.Row="1" HorizontalAlignment="Stretch" VerticalAlignment="Bottom">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Border x:Name="Button1Host"
Margin="{ThemeResource ContentDialogButton1HostMargin}"
MinWidth="{ThemeResource ContentDialogButtonMinWidth}"
MaxWidth="{ThemeResource ContentDialogButtonMaxWidth}"
Height="{ThemeResource ContentDialogButtonHeight}"
HorizontalAlignment="Stretch" />
<Border x:Name="Button2Host"
Margin="{ThemeResource ContentDialogButton2HostMargin}"
MinWidth="{ThemeResource ContentDialogButtonMinWidth}"
MaxWidth="{ThemeResource ContentDialogButtonMaxWidth}"
Height="{ThemeResource ContentDialogButtonHeight}"
Grid.Column="1"
HorizontalAlignment="Stretch" />
</Grid>
</Grid>
</Border>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ContentDialog.Style>