WPF TabControl 加载多个选项卡，但所有选项卡中的内容相同

Answer 1

我想提出一个简单的解决方案。

<TabControl ItemsSource="{Binding Items}">
     <TabControl.Resources>
         <DataTemplate DataType="{x:Type local:AccountViewModel}">
             <local:AccountUserControl/>
         </DataTemplate>
         <DataTemplate DataType="{x:Type local:AddressViewModel}">
             <local:AddressUserControl/>
         </DataTemplate>
     </TabControl.Resources>
     <TabControl.ItemTemplate>
         <DataTemplate>
             <TextBlock Text="{Binding Label}"/>
         </DataTemplate>
     </TabControl.ItemTemplate>
     <TabControl.ContentTemplate>
         <DataTemplate>
             <ContentControl Content="{Binding }"/>
         </DataTemplate>
     </TabControl.ContentTemplate>
 </TabControl>

MainViewModel 是

    public class MainViewModel: ViewModelBase
    {
        List<ItemViewModel> _items = new List<ItemViewModel>();
        public List<ItemViewModel> Items 
        {
            get { return _items; } 
            set { _items = value; OnPropertyChanged(nameof(Items)); }
        }
        public MainViewModel()
        {
            Items= [new AddressViewModel(),new AccountViewModel()];
        }
 }

ItemViewModel 是：

public class ItemViewModel : ViewModelBase
{
    string _label = "";
    public string Label
    {
        get { return _label; }
        set {  _label = value; OnPropertyChanged(nameof(Label)); } 
    }
}

AccountViewModel 是：

public class AccountViewModel : ItemViewModel
{
    string _AccountNumber = "";
    public string AccountNumber
    {
        get { return _AccountNumber; }
        set { _AccountNumber = value; OnPropertyChanged(nameof(AccountNumber)); }
    }
    string _bank = "";
    public string Bank
    {
        get { return _bank; }
        set { _bank = value; OnPropertyChanged(nameof(Bank)); }
    }
    public AccountViewModel()
    {
        Label = "Account";
        Bank = "People Bank";
        AccountNumber = "791800";
    }
            
}

AddressViewModel 是：

public class AddressViewModel : ItemViewModel
{
    string _address = "";
    public string Address
    {
        get { return _address; }
        set { _address = value;OnPropertyChanged(nameof(Address)); }
    }
    string _city = "";
    public string City
    {
        get { return _city; }
        set { _city = value; OnPropertyChanged(nameof(City)); }
    }

    public AddressViewModel()
    {
        Label = "Address";
        Address = "1349 BellField Way";
        City = "Belleview";
    }
}

AccountUserControl 是：

<Grid>
    <StackPanel Orientation="Vertical">
        <TextBlock Text="{Binding AccountNumber}"/>
        <TextBlock Text="{Binding Bank}"/>
    </StackPanel>
</Grid>

AddressUserControl 是：

<Grid>
    <StackPanel Orientation="Vertical">
        <TextBlock Text="{Binding City}"/>
        <TextBlock Text="{Binding Address}"/>
    </StackPanel>   
</Grid>