WPFの `TextBox`で文字列を入力できません

Question

私は2つのウィンドウを持っています。 MainWindowのボタンを1つだけクリックすると、TextBoxとButtonの2番目のウィンドウPlayingGameWindowが表示されます。ただし、TextBoxもButtonも使用できません。前者は入力できず、後者はクリックできません。彼らはどちらもグレーです。

MainWindow.xaml：

<Window x:Class="GuessFigure.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:GuessFigure" 
     mc:Ignorable="d" 
     Title="猜数字" Height="350" Width="525"> 
    <Grid> 
     <Button x:Name="button" Content="开始游戏" HorizontalAlignment="Left" Margin="228,139,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click"/> 

    </Grid> 
</Window> 

MainWindow.cs：

namespace GuessFigure 
{ 
    /// <summary> 
    /// MainWindow.xaml 的交互逻辑 
    /// </summary> 
    public partial class MainWindow : Window 
    { 
     public MainWindow() 
     { 
      InitializeComponent(); 
     } 

     //开始游戏按钮 
     private void Button_Click(object sender, RoutedEventArgs e) 
     { 
      PlayingGameWindow playingGameWindow = new PlayingGameWindow(); 

      playingGameWindow.Show(); 
      Close(); 
     } 
    } 
} 

PlayingGameWindow.xaml：

<Window x:Class="GuessFigure.PlayingGameWindow" 
     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:GuessFigure" 
     mc:Ignorable="d" 
     Title="PlayingGame" Height="300" Width="300"> 
    <Grid 
     xmlns:viewmodel="clr-namespace:GuessFigure.ViewModel" IsEnabled="False"> 
     <Grid.Resources> 
      <viewmodel:PlayGameViewModel x:Key="playGameViewModel"/> 
     </Grid.Resources> 
     <Grid.RowDefinitions> 
      <RowDefinition Height="40*"/> 
      <RowDefinition Height="51*"/> 
      <RowDefinition Height="81*"/> 
      <RowDefinition Height="40*"/> 
      <RowDefinition Height="58*"/> 
     </Grid.RowDefinitions> 
     <Grid.DataContext> 
      <Binding Source="{StaticResource playGameViewModel}" /> 
     </Grid.DataContext> 
     <TextBlock x:Name="tbTime" HorizontalAlignment="Left" Margin="76,24,0,0" TextWrapping="Wrap" Text="{Binding Path=TimeText}" VerticalAlignment="Top" Grid.Row="4" Height="15" Width="88"/> 
     <TextBox x:Name="answerTextBox" HorizontalAlignment="Left" Height="23" Margin="76,37.8,0,0" TextWrapping="Wrap" Text="{Binding Path=UserAnswer}" VerticalAlignment="Top" Width="120" Grid.Row="2"/> 
     <TextBlock x:Name="roundNumber" HorizontalAlignment="Left" Margin="10,10,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Text="{Binding Path=RoundName}" PreviewTextInput="NumberValidationTextBox" Height="15"/> 
     <Button x:Name="button" Content="确认" HorizontalAlignment="Left" Margin="176,11,0,0" Grid.Row="3" VerticalAlignment="Top" Width="75" IsEnabled="True"/> 
     <TextBlock x:Name="currentQuestiontextBlock" HorizontalAlignment="Left" Margin="94,26,0,0" Grid.Row="1" TextWrapping="Wrap" Text="{Binding Path=Question}" VerticalAlignment="Top"/> 

    </Grid> 
</Window> 

PlayingGameWIndow.cs。

namespace GuessFigure 
{ 
    /// <summary> 
    /// PlayingGame.xaml 的交互逻辑 
    /// </summary> 
    public partial class PlayingGameWindow : Window 
    { 
     public PlayingGameWindow() 
     { 
      InitializeComponent(); 
     } 


     private void NumberValidationTextBox(object sender, TextCompositionEventArgs e) 
     { 
      Regex regex = new Regex("[^0-9]+"); 
      e.Handled 
       = regex.IsMatch(e.Text); 
     } 
    } 
} 

Answer 1

2番目のウィンドウでIsEnabled = falseとなっています。これにより、すべての入力が無効になります。

<Grid 
     xmlns:viewmodel="clr-namespace:GuessFigure.ViewModel" IsEnabled="False">