Question

默认情况下，文字位于ListView（内容单元格中不）标题的中心位置，我一直在努力让它保持对齐，这就是我的意思我想出了：

<ListView.Resources>
    <DataTemplate x:Key="Templ">
       <TextBlock HorizontalAlignment="Left" Text="{Binding}"/>
    </DataTemplate>
</ListView.Resources>   
...
<GridViewColumn HeaderTemplate="{StaticResource Templ}">File</GridViewColumn>

这似乎是改变标题外观的正确位置，因为我可以更改Margin等其他属性，但它不会响应HorizontalAlignment属性！我猜测文本框的大小适合内容并且本身居中，从而使对齐属性变得多余。

如何使文字左对齐？

Answer 1

将HeaderContainerStyle设置为将HorizontalContentAlignment设置为左侧的样式：

<ListView.Resources>
    <DataTemplate x:Key="Templ">
        <TextBlock HorizontalAlignment="Left" Text="{Binding}"/>
    </DataTemplate>
    <Style x:Key="HeaderStyle" TargetType="GridViewColumnHeader">
        <Setter Property="HorizontalContentAlignment" Value="Left"/>
    </Style>
</ListView.Resources>
<ListView.View>
    <GridView>
        <GridView.Columns>
            <GridViewColumn HeaderTemplate="{StaticResource Templ}" HeaderContainerStyle="{StaticResource HeaderStyle}">File</GridViewColumn>
        </GridView.Columns>
    </GridView>
</ListView.View>

Answer 2

这是用于设置标题内容对齐的附加属性：

    #region HeaderContentAlignment

    /// <summary>Gets a <see cref="GridViewColumn"/>'s header content alignment.</summary>
    [Category("Common")]
    [AttachedPropertyBrowsableForType(typeof(GridViewColumn))]
    public static HorizontalAlignment GetHeaderContentAlignment(GridViewColumn gridViewColumn)
    {
        return (HorizontalAlignment)gridViewColumn.GetValue(HeaderContentAlignmentProperty);
    }
    /// <summary>Sets a <see cref="GridViewColumn"/>'s header content alignment.</summary>
    public static void SetHeaderContentAlignment(GridViewColumn gridViewColumn, HorizontalAlignment value)
    {
        gridViewColumn.SetValue(HeaderContentAlignmentProperty, value);
    }

    /// <summary>Indicates a <see cref="GridViewColumn"/>'s <see cref="GridViewColumn.HeaderContainerStyle"/>.</summary>
    public static readonly DependencyProperty HeaderContentAlignmentProperty = 
        DependencyProperty.RegisterAttached(
            "HeaderContentAlignment",
            typeof(HorizontalAlignment), // type
            typeof(GridViewExtensions), // containing static class
            new PropertyMetadata(HorizontalAlignment.Center, OnHeaderContentAlignmentChanged)
            );

    private static void OnHeaderContentAlignmentChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        OnHeaderContentAlignmentChanged((GridViewColumn)d, (HorizontalAlignment)e.NewValue);
    }

    private static void OnHeaderContentAlignmentChanged(GridViewColumn gridViewColumn, HorizontalAlignment alignment)
    {
        Style style;
        if (ColumnHeaderAlignments.TryGetValue(alignment, out style) == false)
        {// style NOT created -> create, cache
            style = new Style(typeof(GridViewColumnHeader));
            style.Setters.Add(new Setter(Control.HorizontalContentAlignmentProperty, alignment));
            ColumnHeaderAlignments.Add(alignment, style);
        }
        gridViewColumn.HeaderContainerStyle = style;
    }

    /// <summary>cache [HorizontalAlignment]: [Style]</summary>
    static readonly Dictionary<HorizontalAlignment, Style> ColumnHeaderAlignments = new Dictionary<HorizontalAlignment, Style>(4);

    #endregion HeaderContentAlignment

Answer 3

这可能会对其他人有所帮助，因为我也在努力挣扎，最好的方法是为GridViewColumn定义样式。

您可以设置一种样式以应用于所有列标题，如下所示

<GridView>
  <GridView.ColumnHeaderContainerStyle>
      <Style TargetType="{x:Type GridViewColumnHeader}">
        <Setter Property="HorizontalContentAlignment" Value="Left" />
      </Style>
   </GridView.ColumnHeaderContainerStyle>
</GridView>

并且您可以覆盖特定列的标题样式，如下所示：

<GridViewColumn Header="Something">
   <GridViewColumn.HeaderContainerStyle>
    <Style TargetType="{x:Type GridViewColumnHeader}">
        <Setter Property="HorizontalContentAlignment" Value="Left" />
    </Style>
   </GridViewColumn.HeaderContainerStyle>
</GridViewColumn>

WPF：设置GridViewColumn的文本对齐方式

3 个答案: