在XAML中,是否有一种方法可以使选项卡标题跨越整个选项卡控件的宽度?
例如,我有三个标签页:红色、蓝色和绿色。如果我有一个宽度设置为自动的选项卡控件,那么选项卡标题将只填充选项卡内容上方的部分空间,但我希望它们填满所有空间。对于我的三个选项卡示例,红色应占据控件的第一个三分之一,蓝色应占据中心三分之一,绿色则占据最后三分之一。
我正在考虑在代码背景下实现这个想法,但我更希望以最简单的方式来完成。
我使用了Jordan的代码示例,并进行了一些更改。这个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();
}
}
}
在XAML中使用相同的命名空间:
xmlns:local="clr-namespace:WpfApplication1.Converters"
并且这将使得所有的选项卡都使用它:
<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>
似乎每个人都在使用转换器,但实际上可以在TabControl
模板中使用Rows
设置为1的UniformGrid
来代替TabPanel
,这并不复杂。当然,您需要重新定制它,但这并不困难。
我是一个老派的人,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>
有人能解释一下为什么大家都更喜欢样式控制而不是派生吗?
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中:
xmlns:local="clr-namespace:WpfApplication1.Converters"
然后将所有的TabItems都使用该转换器:
<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是父元素的x:Name,我希望选项卡的大小为其四分之一。
<TabControl.Template>
<ControlTemplate TargetType="TabControl">
<DockPanel>
<UniformGrid IsItemsHost="True" Rows="1" DockPanel.Dock="Top"></UniformGrid>
<ContentPresenter ContentSource="SelectedContent"></ContentPresenter>
</DockPanel>
</ControlTemplate>
</TabControl.Template>
通过将宽度绑定到父选项卡控件的ActualWidth,可以实现如下所示。
我已经将其包装在一个样式中,以应用于所有选项卡页面。
<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>
我按照Charlie的建议,走上了重新模板化的路线。这里是一个简单的TabControl
实现,它将可用空间平均分配给其TabItem
,使用UniformGrid
:
控件的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>
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;
}
}
}
}
就这样,您现在可以向此控件添加TabItem
,它们将自动调整宽度。这些TabItem
无需指定Grid.Column
,即使在设计时也可以正常工作。
UniformGrid.Columns
(这就是UniformGrid
的作用),选项卡会自动调整大小。另外请注意,我们不能将RowDefinition0的高度设置为静态数字,因为用户可以使用任何高度的标题。最后,如果您对答案中的某些内容不理解,向提问者询问总是友善和体贴的做法,而不是直接点踩。 - dotNETMargin
设置不应该存在;不知道它是怎么通过的。其次,Grid.Row
应该是0
,而不是1
。除了这两个问题,其他的都是正确的,对我来说完全正常工作。 - dotNETTabControl
放置在解决方案中的单独项目中。如果不这样做,当您尝试向TabControl
添加多个选项卡时,可能会遇到一个神秘的错误“属性'content'只能设置一次”。至少在我的情况下,我遇到了这个错误,并通过将自定义的TabControl放置在解决方案中的单独项目中来解决它。该项目仍然可以编译并以所需的效果运行。这只是一个设计时错误。但仍然很烦人。 - Anthony Stivers<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>
我通过创建一个特殊的转换器来解决这个问题:
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();
}
}
我计算了TabControl中Tag元素中一个选项卡项目的值,以避免为每个选项卡单独计算。以下是示例代码(请注意,在我的情况下,我需要一个水平滚动视图器,因为我有多个选项卡项目,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>
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;
}
}
return (width <= 1) ? 0:(width - 1.34);
,这似乎可以处理所有选项卡项目数。 - Mike LIMultiValueConverter
而不是IValueConverter
是因为如果没有第二个绑定到ActualWidth
,则绑定将在控件呈现之前绑定,导致转换器内的ActualWidth
始终为零。添加第二个绑定到ActualWidth
强制绑定每次父TabControl
的宽度更改时重新评估。这有点笨拙,但它有效。 - XVar