Question

XAML中是否有一种方法可以使标签项标题在标签控件的宽度上展开？

例如，我有三个标签：红色，蓝色和绿色。如果我有一个宽度设置为auto的标签控件，标签页眉只会填充标签内容上方的部分空间，但我希望它们填满所有空间。对于我的三个标签示例，红色应占据控件的前三分之一，蓝色应占据中心的第三个，绿色占据最后的三个。

我知道如何在我正在处理的代码中执行此操作，但我有兴趣以最简单的方式执行此操作。

Answer 1

我采用了乔丹的榜样并对其进行了一些修改。此版本适用于任意数量的选项卡：

namespace WpfApplication1.Converters
{
    public class TabSizeConverter : IMultiValueConverter
    {
        public object Convert(object[] values, Type targetType, object parameter,
            System.Globalization.CultureInfo culture)
        {
            TabControl tabControl = values[0] as TabControl;
            double width = tabControl.ActualWidth / tabControl.Items.Count;
            //Subtract 1, otherwise we could overflow to two rows.
            return (width <= 1) ? 0 : (width - 1);
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter,
            System.Globalization.CultureInfo culture)
        {
            throw new NotSupportedException();
        }
    }
}

xaml中的相同命名空间：

xmlns:local="clr-namespace:WpfApplication1.Converters"

这将使所有标签使用它：

<Window.Resources>
    <local:TabSizeConverter x:Key="tabSizeConverter" />
    <Style TargetType="{x:Type TabItem}">
        <Setter Property="Width">
            <Setter.Value>
                <MultiBinding Converter="{StaticResource tabSizeConverter}">
                    <Binding RelativeSource="{RelativeSource Mode=FindAncestor,
            AncestorType={x:Type TabControl}}" />
                    <Binding RelativeSource="{RelativeSource Mode=FindAncestor,
            AncestorType={x:Type TabControl}}" Path="ActualWidth" />
                </MultiBinding>
            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources>

Answer 2

每个人似乎都在转换路由，但它真的很简单，就像在UniformGrid模板中使用Rows设置为1的TabControl一样简单，代替{{ 1}}。当然，你必须重新模板化，但这并不是太糟糕。

Answer 3

我能够使用像这样的转换器：

namespace WpfApplication1.Converters
{
    public class SizeConverter : IValueConverter
    {
        #region IValueConverter Members

        public object Convert(object value, Type targetType, object parameter,
            System.Globalization.CultureInfo culture)
        {
            double width = Double.Parse(value.ToString());
            //Subtract 1, otherwise we could overflow to two rows.
            return .25 * width - 1;
        }

        public object ConvertBack(object value, Type targetType, object parameter,
            System.Globalization.CultureInfo culture)
        {
            throw new NotSupportedException();
        }

        #endregion
    }
}

然后将命名空间添加到我的xaml：

xmlns:local="clr-namespace:WpfApplication1.Converters"

然后让所有TabItems使用转换器：

<Window.Resources>
        <local:SizeConverter x:Key="sizeConverter" />
        <Style TargetType="{x:Type TabItem}">
            <Setter Property="Width" Value="{Binding ElementName=x_Grid, Path=ActualWidth, Converter={StaticResource sizeConverter}}" />
        </Style>
    </Window.Resources>

x_Grid是x：父元素的名称我希望标签是1/4，如果这是有道理的。

Answer 4

可以通过将宽度绑定到父选项卡控件的ActualWidth来实现，如下所示。

我已将其包装成样式以应用于所有标签页。

<Grid>
      <Grid.Resources>
        <Style TargetType="TabItem">
            <Setter Property="Width" Value="{Binding    
                     Path=ActualWidth,    
                     RelativeSource={RelativeSource    
                    Mode=FindAncestor,    
                    AncestorType={x:Type TabControl}}}"/>
        </Style>
    </Grid.Resources>

<TabControl>
    <TabItem Header="Page3"/>
    <TabItem Header="Page2"/>
    <TabItem Header="Page3"/>            
</TabControl> 
</Grid>

Answer 5

我是一个老派风格的家伙。并且更喜欢将这种功能封装到控件本身的代码中。我的派生控件如下所示：

    public class CustomTabControl :TabControl
{
    protected override void OnRenderSizeChanged(System.Windows.SizeChangedInfo sizeInfo)
    {
        foreach (TabItem item in this.Items)
        {
            double newW = (this.ActualWidth / Items.Count) - 1;
            if (newW < 0) newW = 0;

            item.Width = newW;
        }            
    }       
}

我的XAML看起来像

</infrastructure:CustomTabControl>
     <TabItem />
     <TabItem />
</infrustracture:CustomControl>

有人可以解释为什么每个人都喜欢样式控制而不是派生。

Answer 6

我通过创建一个特殊的转换器解决了这个问题：

    public class TabItemWidthAdjustmentConverter : IValueConverter
    {
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        Double lTabControlWidth = value is Double ? (Double)value : 50; // 50 just to see something, in case of error
        Int32 lTabsCount = (parameter != null && parameter is String) ? Int32.Parse((String)parameter) : 1;
        return lTabControlWidth / lTabsCount;
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }
    }

我计算TabControl的Tag元素中一个标签项的值，以避免分别为每个标签计算它。下面是示例代码（请注意，在我的情况下，我需要一个水平ScrollViewer，因为我有多个标签项，并且具有最小宽度）：

<TabControl Name="tabControl" VerticalAlignment="Stretch" SelectionChanged="TabControl_SelectionChanged" 
                    Tag="{Binding RelativeSource={RelativeSource Self}, Path=ActualWidth, Converter={StaticResource tabItemWidthAdjustmentConverter}, ConverterParameter=15}"><!-- Here 15 because I have 15 tabs -->
            <TabControl.Template>
                <ControlTemplate TargetType="TabControl">
                    <StackPanel>
                        <ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Disabled">
                            <TabPanel x:Name="HeaderPanel"
                                      Panel.ZIndex="1"
                                      KeyboardNavigation.TabIndex="1"
                                      IsItemsHost="True"/>
                        </ScrollViewer>
                        <ContentPresenter x:Name="PART_SelectedContentHost" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
                                          Margin="{TemplateBinding Padding}"
                                          ContentSource="SelectedContent"/>
                    </StackPanel>
                </ControlTemplate>
            </TabControl.Template>
            <TabItem Header="Tab1" MinWidth="115" VerticalAlignment="Stretch" Width="{Binding ElementName=tabControl, Path=Tag}">
                <ContentControl ContentTemplate="{StaticResource My_TemplateTab1}">
                    <ContentPresenter />
                </ContentControl>
            </TabItem>
            <TabItem Header="Tab2" MinWidth="115" Height="50" Width="{Binding ElementName=tabControl, Path=Tag}">
                <ContentControl ContentTemplate="{StaticResource My_TemplateTab2}">
                    <ContentPresenter />
                </ContentControl>
            </TabItem>
            <!-- Here another 13 tabs which I skipped -->
            </TabControl>

我可以说这就像我的情况下的魅力:) 希望有人会发现它有用！

P.S。在我的情况下，我不需要/想要任何风格。

Answer 7

这是一个只使用模板的无痛解决方案：

<Window x:Class="Window1"
        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"
        xmlns:EffectLibrary="clr-namespace:EffectLibrary;assembly=EffectLibrary"
        mc:Ignorable="d"
        Title="Window1" Height="300" Width="300">
    <TabControl Style="{DynamicResource TabControlStyle}" ItemContainerStyle="{DynamicResource TabItemStyle}" BorderBrush="{DynamicResource Pallete.Primary}" Foreground="{DynamicResource Pallete.Primary}" Background="Transparent" Margin="0" d:LayoutOverrides="Height">
        <TabControl.Resources>
            <Style x:Key="TabControlStyle" TargetType="{x:Type TabControl}">
                <Setter Property="Padding" Value="0"/>
                <Setter Property="HorizontalContentAlignment" Value="Center"/>
                <Setter Property="VerticalContentAlignment" Value="Center"/>
                <Setter Property="Background" Value="Transparent"/>
                <Setter Property="BorderBrush" Value="#093A5F"/>
                <Setter Property="BorderThickness" Value="1"/>
                <Setter Property="Foreground" Value="#001423"/>
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="{x:Type TabControl}">
                            <Border x:Name="Bg" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
                                <Grid x:Name="templateRoot" ClipToBounds="true" SnapsToDevicePixels="true" KeyboardNavigation.TabNavigation="Local">
                                    <Grid.ColumnDefinitions>
                                        <ColumnDefinition x:Name="ColumnDefinition0"/>
                                        <ColumnDefinition x:Name="ColumnDefinition1" Width="0"/>
                                    </Grid.ColumnDefinitions>
                                    <Grid.RowDefinitions>
                                        <RowDefinition x:Name="RowDefinition0" Height="Auto"/>
                                        <RowDefinition x:Name="RowDefinition1" Height="*"/>
                                    </Grid.RowDefinitions>
                                    <UniformGrid x:Name="headerPanel" IsItemsHost="True" Margin="0">
                                        <UniformGrid.Style>
                                            <Style TargetType="{x:Type UniformGrid}">
                                                <Setter Property="Rows" Value="1"/>
                                                <Style.Triggers>
                                                    <DataTrigger Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource TemplatedParent}}" Value="Right">
                                                        <Setter Property="Columns" Value="1"/>
                                                        <Setter Property="Rows" Value="0"/>
                                                    </DataTrigger>
                                                    <DataTrigger Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource TemplatedParent}}" Value="Left">
                                                        <Setter Property="Columns" Value="1"/>
                                                        <Setter Property="Rows" Value="0"/>
                                                    </DataTrigger>
                                                </Style.Triggers>
                                            </Style>
                                        </UniformGrid.Style>
                                    </UniformGrid>
                                    <Border x:Name="contentPanel" Grid.Column="0" KeyboardNavigation.DirectionalNavigation="Contained" Grid.Row="1" KeyboardNavigation.TabIndex="2" KeyboardNavigation.TabNavigation="Local" BorderThickness="0,1,0,0" BorderBrush="{TemplateBinding BorderBrush}">
                                        <ContentPresenter x:Name="PART_SelectedContentHost" ContentSource="SelectedContent" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                                    </Border>
                                </Grid>
                            </Border>
                            <ControlTemplate.Triggers>
                                <Trigger Property="TabStripPlacement" Value="Bottom">
                                    <Setter Property="Grid.Row" TargetName="headerPanel" Value="1"/>
                                    <Setter Property="Grid.Row" TargetName="contentPanel" Value="0"/>
                                    <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>
                                    <Setter Property="Height" TargetName="RowDefinition1" Value="Auto"/>
                                </Trigger>
                                <Trigger Property="TabStripPlacement" Value="Left">
                                    <Setter Property="Grid.Row" TargetName="headerPanel" Value="0"/>
                                    <Setter Property="Grid.Row" TargetName="contentPanel" Value="0"/>
                                    <Setter Property="Grid.Column" TargetName="headerPanel" Value="0"/>
                                    <Setter Property="Grid.Column" TargetName="contentPanel" Value="1"/>
                                    <Setter Property="Width" TargetName="ColumnDefinition0" Value="Auto"/>
                                    <Setter Property="Width" TargetName="ColumnDefinition1" Value="*"/>
                                    <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>
                                    <Setter Property="Height" TargetName="RowDefinition1" Value="0"/>
                                </Trigger>
                                <Trigger Property="TabStripPlacement" Value="Right">
                                    <Setter Property="Grid.Row" TargetName="headerPanel" Value="0"/>
                                    <Setter Property="Grid.Row" TargetName="contentPanel" Value="0"/>
                                    <Setter Property="Grid.Column" TargetName="headerPanel" Value="1"/>
                                    <Setter Property="Grid.Column" TargetName="contentPanel" Value="0"/>
                                    <Setter Property="Width" TargetName="ColumnDefinition0" Value="*"/>
                                    <Setter Property="Width" TargetName="ColumnDefinition1" Value="Auto"/>
                                    <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>
                                    <Setter Property="Height" TargetName="RowDefinition1" Value="0"/>
                                </Trigger>
                                <Trigger Property="IsEnabled" Value="false">
                                    <Setter Property="Effect" TargetName="templateRoot">
                                        <Setter.Value>
                                            <EffectLibrary:DesaturateEffect DesaturationFactor=".25"/>
                                        </Setter.Value>
                                    </Setter>
                                </Trigger>
                            </ControlTemplate.Triggers>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Style>
            <Style x:Key="TabItemStyle" TargetType="{x:Type TabItem}">
                <Setter Property="FocusVisualStyle" Value="{StaticResource FocusVisual}"/>
                <Setter Property="Foreground" Value="{Binding Foreground, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type TabControl}}}"/>
                <Setter Property="Background" Value="{Binding Background, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type TabControl}}}"/>
                <Setter Property="BorderBrush" Value="{Binding BorderBrush, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type TabControl}}}"/>
                <Setter Property="Margin" Value="0"/>
                <Setter Property="Padding" Value="0,5"/>
                <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
                <Setter Property="VerticalContentAlignment" Value="Stretch"/>
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="{x:Type TabItem}">
                            <Grid x:Name="templateRoot" SnapsToDevicePixels="true"  Background="{TemplateBinding Background}">
                                <Border x:Name="mainBorder" BorderBrush="{TemplateBinding BorderBrush}">
                                    <Border x:Name="highlightBorder"/>
                                </Border>
                                <ContentPresenter x:Name="contentPresenter" ContentSource="Header" Focusable="False" HorizontalAlignment="{Binding HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{Binding VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
                            </Grid>
                            <ControlTemplate.Triggers>
                                <Trigger Property="IsEnabled" Value="false">
                                    <Setter Property="Effect" TargetName="templateRoot">
                                        <Setter.Value>
                                            <EffectLibrary:DesaturateEffect DesaturationFactor=".25"/>
                                        </Setter.Value>
                                    </Setter>
                                </Trigger>
                                <DataTrigger Binding="{Binding IsSelected, RelativeSource={RelativeSource Self}}" Value="true">
                                    <Setter TargetName="highlightBorder" Property="Background" Value="#0B79CE"/>
                                </DataTrigger>
                                <DataTrigger Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Top">
                                    <Setter TargetName="mainBorder" Property="BorderThickness" Value="0,0,1,0"/>
                                    <Setter TargetName="highlightBorder" Property="Height" Value="2"/>
                                    <Setter TargetName="highlightBorder" Property="VerticalAlignment" Value="Bottom"/>
                                </DataTrigger>
                                <DataTrigger Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Bottom">
                                    <Setter TargetName="mainBorder" Property="BorderThickness" Value="0,0,1,0"/>
                                    <Setter TargetName="highlightBorder" Property="Height" Value="2"/>
                                    <Setter TargetName="highlightBorder" Property="VerticalAlignment" Value="Top"/>
                                </DataTrigger>
                                <DataTrigger Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Left">
                                    <Setter TargetName="mainBorder" Property="BorderThickness" Value="0,0,0,1"/>
                                    <Setter TargetName="highlightBorder" Property="Width" Value="2"/>
                                    <Setter TargetName="highlightBorder" Property="HorizontalAlignment" Value="Right"/>
                                </DataTrigger>
                                <DataTrigger Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Right">
                                    <Setter TargetName="mainBorder" Property="BorderThickness" Value="0,0,0,1"/>
                                    <Setter TargetName="highlightBorder" Property="Width" Value="2"/>
                                    <Setter TargetName="highlightBorder" Property="HorizontalAlignment" Value="Left"/>
                                </DataTrigger>
                            </ControlTemplate.Triggers>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Style>
        </TabControl.Resources>
        <TabItem Header="Years">
            <ListBox Background="{DynamicResource Pallete.Primary.Brightest}" Foreground="{DynamicResource Pallete.Primary}">
                <TextBlock Text="2015"/>
                <TextBlock Text="2016"/>
                <TextBlock Text="2017"/>
            </ListBox>
        </TabItem>
        <TabItem Header="Tables">
            <ListBox  Background="{DynamicResource Pallete.Primary.Brightest}" Foreground="{DynamicResource Pallete.Primary}">
                <TextBlock Text="Table1..."/>
                <TextBlock Text="Table2..."/>
                <TextBlock Text="Table3..."/>
            </ListBox>
        </TabItem>
    </TabControl>
</Window>

希望我已经包含了所有颜色，它会对你有用。啊......啪！我的去饱和效果！ My WPF startup project如果你愿意的话，你可以从那里获取效果（在触发器中将效果更容易，而不是重新着色所有的东西，与高光相同）。是的，这是很多代码，但我只是将ItemsContainer改为看起来更好并用UniformGrid替换标准Header控件，并根据TabStripPlacement将Rows或Columns设置为1。现在我可以折叠此代码，或隐藏它在某处。：）

Answer 8

我按照查理的建议继续重新模板化。以下是TabControl的简单实现，它使用TabItem在UniformGrid之间平均划分可用空间：

控制XAML

<TabControl x:Class="YourNamespace.Views.BigTabsTabControl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:YourNamespace.Views"
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300"
            Padding="2" HorizontalContentAlignment="Center" VerticalContentAlignment="Center"
            BorderThickness="1" Foreground="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}">

    <TabControl.Resources>
        <SolidColorBrush x:Key="TabItem.Selected.Background" Color="#FFFFFF"/>
        <SolidColorBrush x:Key="TabItem.Selected.Border" Color="#ACACAC"/>
    </TabControl.Resources>

    <TabControl.Style>
        <Style TargetType="{x:Type TabControl}">
            <Setter Property="Background" Value="{StaticResource TabItem.Selected.Background}"/>
            <Setter Property="BorderBrush" Value="{StaticResource TabItem.Selected.Border}"/>
        </Style>
    </TabControl.Style>

    <TabControl.Template>
        <ControlTemplate TargetType="{x:Type TabControl}">
            <Grid x:Name="templateRoot" ClipToBounds="true" SnapsToDevicePixels="true" KeyboardNavigation.TabNavigation="Local">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition x:Name="ColumnDefinition0"/>
                    <ColumnDefinition x:Name="ColumnDefinition1" Width="0"/>
                </Grid.ColumnDefinitions>
                <Grid.RowDefinitions>
                    <RowDefinition x:Name="RowDefinition0" Height="Auto"/>
                    <RowDefinition x:Name="RowDefinition1" Height="*"/>
                </Grid.RowDefinitions>

                <UniformGrid x:Name="headerPanel" Background="Transparent" Grid.Column="0" IsItemsHost="true" Grid.Row="0" KeyboardNavigation.TabIndex="1" Panel.ZIndex="1" />
                <Border x:Name="contentPanel" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.Column="0" KeyboardNavigation.DirectionalNavigation="Contained" Grid.Row="1" KeyboardNavigation.TabIndex="2" KeyboardNavigation.TabNavigation="Local">
                    <ContentPresenter x:Name="PART_SelectedContentHost" ContentSource="SelectedContent" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                </Border>
            </Grid>
            <ControlTemplate.Triggers>
                <Trigger Property="TabStripPlacement" Value="Bottom">
                    <Setter Property="Grid.Row" TargetName="headerPanel" Value="1"/>
                    <Setter Property="Grid.Row" TargetName="contentPanel" Value="0"/>
                    <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>
                    <Setter Property="Height" TargetName="RowDefinition1" Value="Auto"/>
                    <Setter Property="Margin" TargetName="headerPanel" Value="2,0,2,2"/>
                </Trigger>
                <Trigger Property="TabStripPlacement" Value="Left">
                    <Setter Property="Grid.Row" TargetName="headerPanel" Value="0"/>
                    <Setter Property="Grid.Row" TargetName="contentPanel" Value="0"/>
                    <Setter Property="Grid.Column" TargetName="headerPanel" Value="0"/>
                    <Setter Property="Grid.Column" TargetName="contentPanel" Value="1"/>
                    <Setter Property="Width" TargetName="ColumnDefinition0" Value="Auto"/>
                    <Setter Property="Width" TargetName="ColumnDefinition1" Value="*"/>
                    <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>
                    <Setter Property="Height" TargetName="RowDefinition1" Value="0"/>
                    <Setter Property="Margin" TargetName="headerPanel" Value="2,2,0,2"/>
                </Trigger>
                <Trigger Property="TabStripPlacement" Value="Right">
                    <Setter Property="Grid.Row" TargetName="headerPanel" Value="0"/>
                    <Setter Property="Grid.Row" TargetName="contentPanel" Value="0"/>
                    <Setter Property="Grid.Column" TargetName="headerPanel" Value="1"/>
                    <Setter Property="Grid.Column" TargetName="contentPanel" Value="0"/>
                    <Setter Property="Width" TargetName="ColumnDefinition0" Value="*"/>
                    <Setter Property="Width" TargetName="ColumnDefinition1" Value="Auto"/>
                    <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>
                    <Setter Property="Height" TargetName="RowDefinition1" Value="0"/>
                    <Setter Property="Margin" TargetName="headerPanel" Value="0,2,2,2"/>
                </Trigger>
                <Trigger Property="IsEnabled" Value="false">
                    <Setter Property="TextElement.Foreground" TargetName="templateRoot" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
                </Trigger>
            </ControlTemplate.Triggers>
        </ControlTemplate>
    </TabControl.Template>
</TabControl>

控制代码落后

using System.Windows.Controls;
using System.Windows.Controls.Primitives;

namespace YourNamespace.Views
{
  /// <summary>
  /// A TabControl with large tabs. 
  /// </summary>
  public partial class BigTabsTabControl : TabControl
  {
    public BigTabsTabControl()
    {
      InitializeComponent();
    }

    public override void OnApplyTemplate()
    {
      base.OnApplyTemplate();

      if (this.Template != null)
      {
        UniformGrid X = this.Template.FindName("headerPanel", this) as UniformGrid;
        if (X != null) X.Columns = this.Items.Count;
      }
    }
  }
}

就是这样。您现在可以将TabItem添加到此控件，他们将自动调整其宽度。无需为这些Grid.Column指定TabItem，即使在设计时它们也能正常工作。

Answer 9

我不知道它是否适用于标签，但每当我需要拉伸任何东西来填充容器时我都使用了ViewBox。那是你要找的那种东西吗？

Answer 10

除了Ryan Versaw公认的解决方案，它提供了相同的tabItem标题宽度，我发现以下方法使其依赖于每个标题的长度。

首先，我们通过将此行添加到xaml multibinding来获取每个tabItem标头的字符串。因此它变成了：

<MultiBinding Converter="{StaticResource tabSizeConverter}">
           <Binding RelativeSource="{RelativeSource Mode=FindAncestor, AncestorType={x:Type TabControl}}" />
           <Binding RelativeSource="{RelativeSource Mode=FindAncestor, AncestorType={x:Type TabControl}}" Path="ActualWidth" />
           <Binding Path="Header" RelativeSource="{RelativeSource Self}"/>
</MultiBinding>

转换器中的一些代码（values []也获得tabItem标题）：

public object Convert(object[] values, Type targetType, object parameter,
        System.Globalization.CultureInfo culture)
    {
        TabControl tabControl = values[0] as TabControl;

        string AllHeaders = "";
        for (int i = 0; i < tabControl.Items.Count; i++)
        {
            int index = tabControl.Items[i].ToString().IndexOf("Header:") + "Header:".Length;
            string currentHeader = tabControl.Items[i].ToString().Substring(index);
            currentHeader = currentHeader.Substring(0, currentHeader.Length - " Content:".Length);
            AllHeaders += currentHeader;
        }

        //Normalize width according to header length
        double width = values[2].ToString().Length * tabControl.ActualWidth / AllHeaders.Length;

        //Subtract 1, otherwise we could overflow to two rows.
        var retVal = (width <= 1) ? 0 : (width - 1);
        return retVal;
    }

我怀疑可能有一种更有效的方法来获取所有标题的AllHeaders字符串，但它可以正常工作......

Answer 11

我使用以下解决方案：在主窗口中，我使用窗口大小的事件和tabcontrol Initialized事件来设置每个Tab的宽度。数字“5”对应于我的Tabs数量。

    private void tabchanger_Initialized(object sender, EventArgs e)
    {
        foreach (TabItem item in tabchanger.Items)
        {
            double newW = (tabchanger.ActualWidth / 5) - 1;
            if (newW < 0) newW = 0;

            item.Width = newW;
        }

    }

    private void Window_SizeChanged(object sender, SizeChangedEventArgs e)
    {
        foreach (TabItem item in tabchanger.Items)
        {
            double newW = (tabchanger.ActualWidth / 5) - 1;
            if (newW < 0) newW = 0;

            item.Width = newW;
        }
    }

如何将WPF选项卡项标题拉伸到父控件宽度

11 个答案: