我正在使用 WPF 应用程序,并且我使用以下方式对我的项目进行分组<DataGrid.GroupStyle>
,我想知道当组折叠时如何设置标题文本。我正在将订单加载到分组网格中,当我折叠特定组时,我希望看到类似 Order : order number 的内容,因为更容易定位。现在我只看到订单数量,但如何添加文本:
<DockPanel>
<TextBlock FontWeight="Bold" Text="{Binding Path=Name}" /> //+ some text
</DockPanel>
(另外,在我添加之后<DataGrid.Columns>
因为我想手动添加我的列,垂直滑块突然出现在屏幕上,即使左侧或右侧没有更多项目,它看起来又糟糕又烦人,我怎样才能删除该滑块,我想保留我的数据网格列,因为我想要样式它们是我想要的,但我不想看到那个滑块:/?)
这是我的代码:
<Grid.ColumnDefinitions>
<ColumnDefinition Width="10*" />
</Grid.ColumnDefinitions>
<DataGrid Grid.Column="0" RowHeaderWidth="0" CanUserAddRows="False" AutoGenerateColumns="False" x:Name="datagrid1" Margin="10,150,8,50" Background="Transparent" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" ItemsSource="{Binding}">
<DataGrid.Resources>
<Style TargetType="{x:Type DataGridColumnHeader}">
<Setter Property="Background" Value="Black"/>
<Setter Property="Opacity" Value="0.5"/>
<Setter Property="Foreground" Value="White"/>
<Setter Property="HorizontalContentAlignment" Value="Center" />
<Setter Property="FontSize" Value="15"/>
<Setter Property="FontFamily" Value="Arial"/>
<Setter Property="Height" Value="50"/>
</Style>
</DataGrid.Resources>
<DataGrid.Columns>
<DataGridTextColumn Binding="{Binding ProductName}" Header="Title" MinWidth="50" FontSize="16" FontFamily="Verdana" />
<DataGridTextColumn Binding="{Binding Quantity}" Header="Quantity" MinWidth="30" FontSize="16" FontFamily="Verdana" />
<DataGridTextColumn Binding="{Binding NumberOfOrder}" Header="Order number" MinWidth="30" FontSize="16" FontFamily="Verdana" />
<DataGridTextColumn Binding="{Binding User}" Header="User" Width="*" FontSize="16" FontFamily="Verdana" />
</DataGrid.Columns>
<DataGrid.GroupStyle>
<!-- Style for groups at top level. -->
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GroupItem}">
<Expander IsExpanded="True">
<Expander.Header>
<DockPanel>
<TextBlock FontWeight="Bold" Text="{Binding Path=Name}" /> //I am wondering what does this line mean?
</DockPanel>
</Expander.Header>
<Expander.Content>
<ItemsPresenter />
</Expander.Content>
</Expander>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
</DataGrid.GroupStyle>
</DataGrid>
P.S 数据网格底部垂直滑块的屏幕截图
我们需要一个Trigger
这里如下所示,和一个IValueConverter
查找组中的项目数:
<Expander.Style>
<Style TargetType="Expander">
<Style.Triggers>
<Trigger Property="IsExpanded" Value="True">
<Setter Property="Header">
<Setter.Value>
<DockPanel>
<TextBlock FontWeight="Bold" Text="{Binding Name}" />
</DockPanel>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="IsExpanded" Value="False">
<Setter Property="Header">
<Setter.Value>
<DockPanel>
<TextBlock FontWeight="Bold">
<TextBlock.Inlines>
<Run Text="{Binding Name}"/>
<Run Text=" ( "/>
<Run Text="{Binding Name, Converter={StaticResource ItemCountCnvKey}}" />
<Run Text=" ) "/>
</TextBlock.Inlines>
</TextBlock>
</DockPanel>
</Setter.Value>
</Setter>
</Trigger>
</Style.Triggers>
</Style>
</Expander.Style>
物品计数转换器
public class ItemCountConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
CollectionViewGroup group = (CollectionViewGroup)value;
ReadOnlyObservableCollection<object> items = group.Items;
return items.Count;
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
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