WPF 根据按钮增加TabItem每一个TabItem的标题右上角都有一个删除小小的X代表可以删除这个选项卡完整代码

XAML代码：

<Window x:Class="WpfApp1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Tab Item Demo" Height="350" Width="500">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <Button Content="Add Tab" Click="AddTab_Click" Margin="10"/>
        <TabControl Grid.Row="1" x:Name="tabControl" SelectionChanged="TabControl_SelectionChanged">
            <TabControl.Resources>
                <Style TargetType="{x:Type TabItem}">
                    <Setter Property="Template">
                        <Setter.Value>
                            <ControlTemplate TargetType="{x:Type TabItem}">
                                <Grid>
                                    <Grid.ColumnDefinitions>
                                        <ColumnDefinition Width="*"/>
                                        <ColumnDefinition Width="Auto"/>
                                    </Grid.ColumnDefinitions>
                                    <ContentPresenter ContentSource="Header"/>
                                    <Button x:Name="closeButton" Content="X" Margin="5,0,0,0" Click="CloseButton_Click"/>
                                </Grid>
                                <ControlTemplate.Triggers>
                                    <Trigger Property="IsSelected" Value="True">
                                        <Setter TargetName="closeButton" Property="Visibility" Value="Visible"/>
                                    </Trigger>
                                    <Trigger Property="IsSelected" Value="False">
                                        <Setter TargetName="closeButton" Property="Visibility" Value="Collapsed"/>
                                    </Trigger>
                                </ControlTemplate.Triggers>
                            </ControlTemplate>
                        </Setter.Value>
                    </Setter>
                </Style>
            </TabControl.Resources>
        </TabControl>
    </Grid>
</Window>

C#代码：

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

namespace WpfApp1
{
    public partial class MainWindow : Window
    {
        private int tabCount = 0;

        public MainWindow()
        {
            InitializeComponent();
        }

        private void AddTab_Click(object sender, RoutedEventArgs e)
        {
            tabCount++;
            TabItem tabItem = new TabItem();
            tabItem.Header = "Tab " + tabCount;
            tabControl.Items.Add(tabItem);
            tabControl.SelectedItem = tabItem;
        }

        private void CloseButton_Click(object sender, RoutedEventArgs e)
        {
            Button closeButton = sender as Button;
            TabItem tabItem = closeButton.Parent as TabItem;
            tabControl.Items.Remove(tabItem);
        }

        private void TabControl_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            foreach (TabItem tabItem in tabControl.Items)
            {
                if (tabItem != tabControl.SelectedItem)
                {
                    tabItem.IsSelected = false;
                }
            }
        }
    }
}
``