型号public class Anagrafica
这不是来自“MV* Patterns”组的模型。在这些模式中，模型是包含所有业务（领域）逻辑的应用程序的层。类Anagrafica是一个实体。可能是DTO。这些类在ADO中称为模型。但ADO是Repository层，它是应用程序模型实现的一部分。
ModelService
该服务实际上是MVVM中的一个模型。考虑到您没有收到_anagrafiche集合可能发生更改的通知，我建议您更改实现以避免任何随机错误。

public class AnagraficheSVC:IAnagraficheSVC
{
    // private ObservableCollection<Anagrafica> _anagrafiche = new ObservableCollection<Anagrafica>();

    public ObservableCollection<Anagrafica> Anagrafiche {get;} = new();

视图（部分）
老实说，我不能说我完全理解你想在GUI中显示什么。我假设您希望为Anagrafiche集合的每个元素创建一个选项卡，并在选项卡中显示元素的详细信息。
如果我没猜错，应该是这样的：

<TabControl ItemsSource="{Binding Anagrafiche}"
            DisplayMemberPath="Some Property Anagrafica">
    <TabControl.ContentTemplate>
        <DataTemplate DataType="{x:Type model:Anagrafica}">
            <Border Name="pagborder" Padding="20">
                <Grid Name="AnaGrid">
                    <Grid.RowDefinitions>
             <!-- Continion XAML code to represent one Anagrafica object -->
    </TabControl.ContentTemplate>
             <!-- Continuation of the XAML code -->
</TabControl>

这就是github.com/Tvuce/WPFpj.git
下面是一个工作实现：

public class User
    {
        public string Name { get; set; } = string.Empty;
        public string Surn { get; set; } = string.Empty;
        public int Age { get; set; }
    }

public class UsersViewModel
    {
        public ObservableCollection<User> Users { get; } = new();

        private RelayCommand? _addUser;
        public RelayCommand AddUser => _addUser ??= new(() => Users.Add(new User() { Name = "cane: " + Users.Count, Surn = "lupo", Age = 15 }));
    }

<Window x:Class="testbinding.MainWindow"
        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:local="clr-namespace:testbinding"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800" Background="DarkBlue">
    <Window.DataContext>
        <local:UsersViewModel/>
    </Window.DataContext>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>
        <TabControl ItemsSource="{Binding Users}" DisplayMemberPath="Name">
            <TabControl.ContentTemplate>
                <DataTemplate DataType="{x:Type local:User}">
                    <Grid>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition ></ColumnDefinition>
                            <ColumnDefinition ></ColumnDefinition>
                        </Grid.ColumnDefinitions>
                        <Grid.RowDefinitions>
                            <RowDefinition></RowDefinition>
                            <RowDefinition></RowDefinition>
                            <RowDefinition></RowDefinition>
                            <RowDefinition></RowDefinition>
                        </Grid.RowDefinitions>
                        <TextBox Grid.Row="0" Grid.Column="0"
                                 Height="20" Width="100"
                                 Text="{Binding Name}"/>
                        <TextBox Grid.Row="0" Grid.Column="1"
                                 Height="20" Width="100"
                                 Text="{Binding Surn}"/>
                        <TextBox Grid.Row="1" Grid.Column="0"
                                 Height="20" Width="100"
                                 Text="{Binding Age}"/>
                    </Grid>
                </DataTemplate>
            </TabControl.ContentTemplate>
        </TabControl>
        <Button Grid.Column="0" Grid.Row="1"
                Command="{Binding AddUser}"
                Background="LightGray" Width="100" Height="60">Add User</Button>
    </Grid>
</Window>

public partial class MainWindow : Window
    {
        // Getting ViewModel in Code Behind from DataContext.
        //In general, it is better not to do this. And leave Code Behind empty.
        private readonly UsersViewModel viewModel;
        public MainWindow()
        {
            InitializeComponent();

            viewModel = (UsersViewModel)DataContext;
        }
    }

.我读文本框只绑定到PropertyChanged事件.
如果只需要显示一个元素（对象），那么最好使用INotifyPropertyChanged.PropertyChanged。但是为了举例，为了学习和提高理解，我将向您展示如何使用ObservableCollection来完成这一点。

public partial class MainWindow : Window
    {
        public ObservableCollection<User> o;
        public MainWindow()
        {
            InitializeComponent();
            o = new ObservableCollection<User>();
            DataContext = o;
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            User p = new User() { name = "cane", surn = "lupo", age = 15 };
            if (o.Count == 0)
                o.Add(p);
            else
                o[0] = p;
        }

<Window x:Class="testbinding.MainWindow"
        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:local="clr-namespace:testbinding"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800" Background="DarkBlue">
    <Grid DataContext="{Binding [0]}">
        <Grid.ColumnDefinitions>
            <ColumnDefinition ></ColumnDefinition>
            <ColumnDefinition ></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition></RowDefinition>
            <RowDefinition></RowDefinition>
            <RowDefinition></RowDefinition>
            <RowDefinition></RowDefinition>
        </Grid.RowDefinitions>
        <TextBox Grid.Row="0" Grid.Column="0" Name="nome" Height="20" Width="100" Text="{Binding name}"></TextBox>
        <TextBox Grid.Row="0" Grid.Column="1" Name="cogn" Height="20" Width="100" Text="{Binding surn}"></TextBox>
        <TextBox Grid.Row="1" Grid.Column="0" Name="eta" Height="20" Width="100" Text="{Binding age}"></TextBox>
        <Button Grid.Column="0" Grid.Row="2" Click="Button_Click" Background="LightGray" Width="100" Height="60">Press</Button>
    </Grid>
</Window>