WPF在TabControl.ContentTemplate内绑定Combobox.ItemsSource

<TabControl>
    <TabItem Header="Tab 1">
        <TabItem.ContentTemplate>
            <DataTemplate>
                <ComboBox ItemsSource="{Binding YourCollection}" />
            </DataTemplate>
        </TabItem.ContentTemplate>
    </TabItem>
</TabControl>

public class YourViewModel : INotifyPropertyChanged
{
    private ObservableCollection<string> yourCollection;

    public ObservableCollection<string> YourCollection
    {
        get { return yourCollection; }
        set
        {
            yourCollection = value;
            OnPropertyChanged(nameof(YourCollection));
        }
    }

    public YourViewModel()
    {
        YourCollection = new ObservableCollection<string>();
        // 在这里添加您的数据到集合中
    }

    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        DataContext = new YourViewModel();
    }
}