WPF:包含ListView的垂直扩展器无法正确扩展

时间:2011-01-05 16:25:59

标签: c# wpf listview expander

我有一个包含列表视图的扩展器。最初禁用扩展器,并在应用程序启动后的某个时间启用。

如果在InitializeComponent()之前我用至少一个项填充ListView的ItemsSource(一些可观察的集合,当然是在InitializeComponent之前创建),那么一切都很有用。扩展器正确扩展,项目显示应该。唯一的问题是,需要更多空间的新项目会被裁剪 - 我认为这意味着ListView没有正确刷新?

但是,如果我在InitializeComponent()之后的任何时候将项添加到集合中,则展开器只会扩展一点(仅几个像素)。当我强制ListView的宽度为某个大值时,扩展器会扩展,但插入列表的项目仅使用背景颜色呈现,没有内容......

我认为这与ListView初始化,刷新或者你有什么关系。代码如下:

XAML:

<DockPanel Name="mainPanel">
    <Expander DockPanel.Dock="Right" ExpandDirection="Right" IsExpanded="False" IsEnabled="{Binding ExpanderEnabled}">
        <Expander.Style>
            <Style TargetType="Expander">
                <Setter Property="Background" Value="#FFFF3333" />
                <Style.Triggers>
                    <DataTrigger Binding="{Binding ExpanderEnabled}" Value="True">
                        <Setter Property="Background" Value="LightGreen" />
                    </DataTrigger>
                </Style.Triggers>
             </Style>
         </Expander.Style>
         <Expander.Header>
             <Grid Width="30" VerticalAlignment="Top" HorizontalAlignment="Left">
                 <Grid Width="300" Height="300" VerticalAlignment="Top" HorizontalAlignment="Left">
                      <TextBlock Text="Expander Name" FontSize="12" FontWeight="Bold" Margin="22,170,0,0" VerticalAlignment="Center" HorizontalAlignment="Left" RenderTransformOrigin="0,1">
            <TextBlock.RenderTransform>
                <TransformGroup>
                    <ScaleTransform/>
                    <SkewTransform/>
                    <RotateTransform Angle="-90"/>
                    <TranslateTransform/>
                </TransformGroup>
            </TextBlock.RenderTransform>
                            </TextBlock>
                        </Grid>
                    </Grid>
         </Expander.Header>
         <ListView ItemsSource="{Binding Items}" BorderBrush="LightGreen" BorderThickness="3">
             <ListView.Style>
                 <Style TargetType="ListView">
                     <Style.Resources>
                         <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Black"/>
                     </Style.Resources>
                 </Style>
              </ListView.Style>
              <ListView.View>
                  <GridView>
                      <GridView.ColumnHeaderContainerStyle>
                          <Style TargetType="{x:Type GridViewColumnHeader}">
                              <Setter Property="Visibility" Value="Collapsed"/>
                          </Style>
                      </GridView.ColumnHeaderContainerStyle>
                      <GridViewColumn DisplayMemberBinding="{Binding Path=A, Converter={StaticResource aConverter}}" Width="Auto" />
                      <GridViewColumn DisplayMemberBinding="{Binding Path=B, Converter={StaticResource bConverter}}" Width="Auto" />
                      <GridViewColumn DisplayMemberBinding="{Binding Path=C, Converter={StaticResource cConverter}}" Width="Auto" />
                      <GridViewColumn DisplayMemberBinding="{Binding Path=D, StringFormat='\{0\} ds'}" Width="Auto" />
                  </GridView>
              </ListView.View>
           </ListView>
      </Expander>
      ...

0 个答案:

没有答案