10

我有一个主数据网格，然后是它下面的手风琴控件。在一个手风琴项目中，我有另一个数据网格，它绑定到第一个数据网格的选定项目。简单的xml是：

<sdk:DataGrid Name="dgMain" ItemsSource="{Binding SomeSource}" />
<toolkit:Accordion>
    <toolkit:AccordionItem Header="Details">
        <sdk:DataGrid ItemsSource="{Binding ElementName=dgMain, Path=SelectedItem.Children}"/>
    </toolkit:AccordionItem>
</toolkit:Accordion>

我将第二个网格的 VerticalAlignment 属性设置为“Stretch”，因此它会随着绑定不同的集合大小而伸展，但问题是它只会在 AccordionItem 大小内伸展，所以如果我在第一个网格中选择一个具有更多的新项目“儿童”然后我必须滚动第二个网格，因为 AccordionItem 没有改变。

AccordionItem 区域只有在我再次压缩和扩展时才会改变。将手风琴项的 VerticalContentAlignment 设置为“Stretch”不起作用。我猜是因为它只在第一次扩展时才会触发。

有谁知道我还能尝试什么，或者我是否遗漏了什么。我宁愿坚持使用 xaml 解决方案，这样我可以保持对 MVVM 友好，但很高兴听到一切。

4

3 回答 3

6

AccordionItem无法正确调整大小的原因是其控制部件之一存在错误 - ExpandableContentControl。此处描述了该问题。

我认为您可以修复它的源代码，或者更轻松地将这个控件从其默认样式替换为普通的ContentControl. 我在这里包含了一个带有普通样式的样式，ContentControl并在@JohnNicholas 提供的代码中对其进行了测试，并且它可以工作。

    <Style TargetType="toolkit:AccordionItem">
        <Setter Property="BorderThickness" Value="1"/>
        <Setter Property="BorderBrush" Value="#FFECECEC"/>
        <Setter Property="Background" Value="White"/>
        <Setter Property="Margin" Value="0"/>
        <Setter Property="Padding" Value="0"/>
        <Setter Property="HorizontalAlignment" Value="Stretch"/>
        <Setter Property="VerticalAlignment" Value="Stretch"/>
        <Setter Property="HorizontalContentAlignment" Value="Left"/>
        <Setter Property="VerticalContentAlignment" Value="Top"/>
        <Setter Property="IsTabStop" Value="False"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="toolkit:AccordionItem">
                    <Grid Background="{TemplateBinding Background}" HorizontalAlignment="{TemplateBinding HorizontalAlignment}" VerticalAlignment="{TemplateBinding VerticalAlignment}">
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualStateGroup.Transitions>
                                    <VisualTransition GeneratedDuration="0"/>
                                </VisualStateGroup.Transitions>
                                <VisualState x:Name="Normal"/>
                                <VisualState x:Name="Pressed"/>
                                <VisualState x:Name="MouseOver"/>
                                <VisualState x:Name="Disabled"/>
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="FocusStates">
                                <VisualState x:Name="Focused"/>
                                <VisualState x:Name="Unfocused"/>
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="ExpansionStates">
                                <VisualStateGroup.Transitions>
                                    <VisualTransition GeneratedDuration="0"/>
                                </VisualStateGroup.Transitions>
                                <VisualState x:Name="Collapsed">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="ExpandSite">
                                            <DiscreteObjectKeyFrame KeyTime="0">
                                                <DiscreteObjectKeyFrame.Value>
                                                    <Visibility>Collapsed</Visibility>
                                                </DiscreteObjectKeyFrame.Value>
                                            </DiscreteObjectKeyFrame>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Expanded">
                                </VisualState>
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="LockedStates">
                                <VisualStateGroup.Transitions>
                                    <VisualTransition GeneratedDuration="0"/>
                                </VisualStateGroup.Transitions>
                                <VisualState x:Name="Locked">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="IsEnabled" Storyboard.TargetName="ExpanderButton">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="False"/>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Unlocked">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="IsEnabled" Storyboard.TargetName="ExpanderButton">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="True"/>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="ExpandDirectionStates">
                                <VisualStateGroup.Transitions>
                                    <VisualTransition GeneratedDuration="0"/>
                                </VisualStateGroup.Transitions>
                                <VisualState x:Name="ExpandDown">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Height" Storyboard.TargetName="rd1">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="*"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Width" Storyboard.TargetName="cd0">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="*"/>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="ExpandUp">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.Row)" Storyboard.TargetName="ExpanderButton">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="1"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.Row)" Storyboard.TargetName="ExpandSite">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="0"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Height" Storyboard.TargetName="rd0">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="*"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Width" Storyboard.TargetName="cd0">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="*"/>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="ExpandLeft">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.ColumnSpan)" Storyboard.TargetName="ExpanderButton">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="1"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.ColumnSpan)" Storyboard.TargetName="ExpandSite">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="1"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.RowSpan)" Storyboard.TargetName="ExpanderButton">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="2"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.RowSpan)" Storyboard.TargetName="ExpandSite">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="2"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.Column)" Storyboard.TargetName="ExpanderButton">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="1"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.Row)" Storyboard.TargetName="ExpandSite">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="0"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Height" Storyboard.TargetName="rd0">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="*"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Width" Storyboard.TargetName="cd0">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="*"/>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="ExpandRight">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.ColumnSpan)" Storyboard.TargetName="ExpanderButton">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="1"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.ColumnSpan)" Storyboard.TargetName="ExpandSite">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="1"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.RowSpan)" Storyboard.TargetName="ExpanderButton">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="2"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.RowSpan)" Storyboard.TargetName="ExpandSite">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="2"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.Row)" Storyboard.TargetName="ExpandSite">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="0"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="(Grid.Column)" Storyboard.TargetName="ExpandSite">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="1"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Height" Storyboard.TargetName="rd0">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="*"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Width" Storyboard.TargetName="cd1">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="*"/>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                        <Border x:Name="Background" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="1,1,1,1" Padding="{TemplateBinding Padding}">
                            <Grid>
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition x:Name="cd0" Width="Auto"/>
                                    <ColumnDefinition x:Name="cd1" Width="Auto"/>
                                </Grid.ColumnDefinitions>
                                <Grid.RowDefinitions>
                                    <RowDefinition x:Name="rd0" Height="Auto"/>
                                    <RowDefinition x:Name="rd1" Height="Auto"/>
                                </Grid.RowDefinitions>
                                <toolkit:AccordionButton x:Name="ExpanderButton" Background="{TemplateBinding Background}" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" Foreground="{TemplateBinding Foreground}" FontWeight="{TemplateBinding FontWeight}" FontStyle="{TemplateBinding FontStyle}" FontStretch="{TemplateBinding FontStretch}" FontSize="{TemplateBinding FontSize}" FontFamily="{TemplateBinding FontFamily}" HorizontalAlignment="{TemplateBinding HorizontalAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" IsTabStop="True" IsChecked="{TemplateBinding IsSelected}" Margin="0,0,0,0" Padding="0,0,0,0" Grid.Row="0" Style="{TemplateBinding AccordionButtonStyle}" VerticalAlignment="{TemplateBinding VerticalAlignment}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
                                <ContentControl x:Name="ExpandSite" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" Foreground="{TemplateBinding Foreground}" FontWeight="{TemplateBinding FontWeight}" FontStyle="{TemplateBinding FontStyle}" FontStretch="{TemplateBinding FontStretch}" FontSize="{TemplateBinding FontSize}" FontFamily="{TemplateBinding FontFamily}" HorizontalAlignment="{TemplateBinding HorizontalAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" IsTabStop="False" Margin="0,0,0,0" Grid.Row="1" Style="{TemplateBinding ExpandableContentControlStyle}" VerticalAlignment="{TemplateBinding VerticalAlignment}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
                            </Grid>
                        </Border>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

PS。AccordionItem如果您想为展开/折叠设置动画，您可以在'sCollapsed和Expanded视觉状态中定义自己的动画。

这真的是一个迟到的回复，希望它可以提供任何帮助。:)

于 2011-10-26T11:11:54.363 回答
2

很久以前我有类似的问题，我想这就是我所做的。基本上在内部数据网格的大小改变事件中，我们重新调用手风琴的测量通道。

在内部数据网格中，像这样附加大小更改事件。

private void InnerDataGrid_SizeChanged(object sender, System.Windows.SizeChangedEventArgs e)
    {
        this.AccordionName.Measure(new Size());
        this.AccordionName.UpdateLayout();
    }
于 2011-04-14T22:55:43.457 回答
0

此代码将演示问题

子子手风琴中的手风琴在您第一次展开时不会展开。但是，如果您折叠其父级并重新展开，它将显示。Alternativley 调整浏览器窗口的大小，它还将调整所有内容的大小以显示它。

这个例子有点做作，但通常我会展示一个子控件，它也有一个手风琴来解决这个问题。将所有内容包装在滚动查看器中时也会出现问题，但这些可能与第一个有关。

<UserControl x:Class="SilverlightApplication1.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400" xmlns:toolkit="http://schemas.microsoft.com/winfx/2006/xaml/presentation/toolkit">

    <Grid x:Name="LayoutRoot" Background="White">
        <toolkit:Accordion  HorizontalAlignment="Stretch" Name="accordion1" SelectionMode="ZeroOrOne"  >
            <toolkit:AccordionItem>
                <toolkit:AccordionItem.Header>
                    <TextBlock Text="Title"  />
                </toolkit:AccordionItem.Header>

                <toolkit:AccordionItem.Content>
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="auto"/>
                            <RowDefinition Height="auto"/>
                        </Grid.RowDefinitions>

                        <TextBox Grid.Row="0"  Height="200" Width="400" />
                        <toolkit:Accordion Grid.Row="1" HorizontalAlignment="Stretch" Name="subAccordion" SelectionMode="ZeroOrOne" >
                            <toolkit:AccordionItem>
                                <toolkit:AccordionItem.Header>
                                    <TextBlock Text="Sub Accordion"  />
                                </toolkit:AccordionItem.Header>
                                <toolkit:AccordionItem.Content>
                                    <Grid>
                                        <Grid.RowDefinitions>
                                            <RowDefinition Height="auto"/>
                                            <RowDefinition Height="auto"/>
                                        </Grid.RowDefinitions>

                                        <TextBox Grid.Row="0"  Height="150" Width="400" Text="Sub Accordion" />
                                        <toolkit:Accordion Grid.Row="1"  HorizontalAlignment="Stretch" Name="subAccordion2" SelectionMode="ZeroOrOne" >
                                            <toolkit:AccordionItem>
                                                <toolkit:AccordionItem.Header>
                                                    <TextBlock Text="Sub sub Accordion"  />
                                                </toolkit:AccordionItem.Header>
                                                <toolkit:AccordionItem.Content>
                                                    <TextBox Text="sub sub" Height ="100" />
                                                </toolkit:AccordionItem.Content>
                                            </toolkit:AccordionItem>
                                        </toolkit:Accordion>
                                    </Grid>

                                </toolkit:AccordionItem.Content>
                            </toolkit:AccordionItem>
                        </toolkit:Accordion>
                    </Grid>


                </toolkit:AccordionItem.Content>
            </toolkit:AccordionItem>
        </toolkit:Accordion>
    </Grid>
</UserControl>
于 2010-11-19T13:24:36.887 回答