設置可見性在網格中崩潰的奇怪問題（c＃，xaml，UWP）

Question

我想讓一個網格有選項來選擇文本框中的玩家數量（最多六個）和輸入名稱。網格下方有「+」和「 - 」按鈕，用於添加或移除播放器（以兩個開頭）。一切正常，直到你添加第6個玩家，然後嘗試減去1個玩家。播放器6文本框和名稱輸入文本框保持可見狀態，取代播放器5。這裏是XAML

<Grid HorizontalAlignment="Center" VerticalAlignment="Center" Width="800" Grid.Row="1" > 
      <Grid.RowDefinitions> 
       <RowDefinition Height="auto" /> 
       <RowDefinition Height="auto" /> 
       <RowDefinition Height="auto" /> 
       <RowDefinition Height="auto" /> 
       <RowDefinition Height="auto" /> 
       <RowDefinition Height="auto" /> 
       <RowDefinition Height="auto" /> 
       <RowDefinition Height="auto" /> 
      </Grid.RowDefinitions> 
      <Grid.ColumnDefinitions> 
       <ColumnDefinition Width="auto" /> 
       <ColumnDefinition Width="*" /> 
      </Grid.ColumnDefinitions> 

       <!--Headers--> 
      <TextBlock Style="{ThemeResource HeaderTextBlockStyle}" Grid.Row="0" Grid.Column="0" Text=""/> 
      <TextBlock Style="{ThemeResource HeaderTextBlockStyle}" Grid.Row="0" Grid.Column="1" Text="Name" Margin="20,0,20,0" TextAlignment="Center"/> 

      <TextBlock Name="PlayerOneTag" Text="Player 1" FontSize="30" Grid.Row="1" Grid.Column="0" Margin="0,20,40,20" TextAlignment="Left"/> 
      <TextBlock Name="PlayerTwoTag" Text="Player 2" FontSize="30" Grid.Row="2" Grid.Column="0" Margin="0,20,40,20" TextAlignment="Left"/> 
      <TextBlock Name="PlayerThreeTag" Text="Player 3" FontSize="30" Grid.Row="3" Grid.Column="0" Margin="0,20,40,20" TextAlignment="Left" Visibility="Collapsed"/> 
      <TextBlock Name="PlayerFourTag" Text="Player 4" FontSize="30" Grid.Row="4" Grid.Column="0" Margin="0,20,40,20" TextAlignment="Left" Visibility="Collapsed"/> 
      <TextBlock Name="PlayerFiveTag" Text="Player 5" FontSize="30" Grid.Row="5" Grid.Column="0" Margin="0,20,40,20" TextAlignment="Left" Visibility="Collapsed"/> 
      <TextBlock Name="PlayerSixTag" Text="Player 6" FontSize="30" Grid.Row="6" Grid.Column="0" Margin="0,20,40,20" TextAlignment="Left" Visibility="Collapsed"/> 

      <TextBox Name="PlayerOneName" FontSize="30" Grid.Row="1" Grid.Column="1" /> 
      <TextBox Name="PlayerTwoName" FontSize="30" Grid.Row="2" Grid.Column="1" /> 
      <TextBox Name="PlayerThreeName" FontSize="30" Grid.Row="3" Grid.Column="1" Visibility="Collapsed" /> 
      <TextBox Name="PlayerFourName" FontSize="30" Grid.Row="4" Grid.Column="1" Visibility="Collapsed" /> 
      <TextBox Name="PlayerFiveName" FontSize="30" Grid.Row="5" Grid.Column="1" Visibility="Collapsed" /> 
      <TextBox Name="PlayerSixName" FontSize="30" Grid.Row="6" Grid.Column="1" Visibility="Collapsed"/> 

       <StackPanel Name="PlayerTwoButtons" Grid.Row="7" Orientation="Horizontal"> 
        <Button Name="AddPlayerThreeButton" Tapped="AddPlayerThree" Style="{StaticResource ResourceKey=PlusButton}" Visibility="Visible"/> 
       </StackPanel> 

       <StackPanel Name="PlayerThreeButtons" Visibility="Collapsed" Grid.Row="7" Orientation="Horizontal"> 
        <Button Name="MinusPlayerThreeButton" Tapped="MinusPlayerThree" Style="{StaticResource ResourceKey=MinusButton}" /> 
        <Button Name="AddPlayerFourButton" Tapped="AddPlayerFour" Style="{StaticResource ResourceKey=PlusButton}" /> 

       </StackPanel> 

       <StackPanel Name="PlayerFourButtons" Visibility="Collapsed" Grid.Row="7" Orientation="Horizontal" > 
        <Button Name="MinusPlayerFourButton" Tapped="MinusPlayerFour" Style="{StaticResource ResourceKey=MinusButton}"/> 
        <Button Name="AddPlayerFiveButton" Tapped="AddPlayerFive" Style="{StaticResource ResourceKey=PlusButton}" /> 

       </StackPanel> 

       <StackPanel Name="PlayerFiveButtons" Grid.Row="7" Orientation="Horizontal" Visibility="Collapsed"> 
        <Button Name="MinusPlayerFiveButton" Tapped="MinusPlayerFive" Style="{StaticResource ResourceKey=MinusButton}" /> 
        <Button Name="AddPlayerSixButton" Tapped="AddPlayerSix" Style="{StaticResource ResourceKey=PlusButton}" /> 

       </StackPanel> 

       <StackPanel Name="PlayerSixButtons" Grid.Row="7" Orientation="Horizontal" Visibility="Collapsed"> 
        <Button Name="MinusPlayerSixButton" Tapped="MinusPlayerSix" Style="{StaticResource ResourceKey=MinusButton}" /> 

       </StackPanel> 

      </Grid> 

這裏是背後

private void AddPlayerThree(object sender, TappedRoutedEventArgs e) 
    { 
     PlayerThreeName.Visibility = Visibility.Visible; 
     PlayerThreeTag.Visibility = Visibility.Visible; 
     PlayerTwoButtons.Visibility = Visibility.Collapsed; 
     PlayerThreeButtons.Visibility = Visibility.Visible; 
    } 

    private void AddPlayerFour(object sender, TappedRoutedEventArgs e) 
    { 
     PlayerFourName.Visibility = Visibility.Visible; 
     PlayerFourTag.Visibility = Visibility.Visible; 
     PlayerThreeButtons.Visibility = Visibility.Collapsed; 
     PlayerFourButtons.Visibility = Visibility.Visible; 
    } 

    private void AddPlayerFive(object sender, TappedRoutedEventArgs e) 
    { 
     PlayerFiveName.Visibility = Visibility.Visible; 
     PlayerFiveTag.Visibility = Visibility.Visible; 
     PlayerFourButtons.Visibility = Visibility.Collapsed; 
     PlayerFiveButtons.Visibility = Visibility.Visible; 
    } 

    private void AddPlayerSix(object sender, TappedRoutedEventArgs e) 
    { 
     PlayerSixName.Visibility = Visibility.Visible; 
     PlayerSixTag.Visibility = Visibility.Visible; 
     AddPlayerSixButton.Visibility = Visibility.Collapsed; 
     MinusPlayerSixButton.Visibility = Visibility.Visible; 
    } 

    private void MinusPlayerThree(object sender, TappedRoutedEventArgs e) 
    { 
     PlayerThreeName.Visibility = Visibility.Collapsed; 
     PlayerThreeTag.Visibility = Visibility.Collapsed; 
     PlayerThreeButtons.Visibility = Visibility.Collapsed; 
     PlayerTwoButtons.Visibility = Visibility.Visible;  

    } 

    private void MinusPlayerFour(object sender, TappedRoutedEventArgs e) 
    { 
     PlayerFourName.Visibility = Visibility.Collapsed; 
     PlayerFourTag.Visibility = Visibility.Collapsed; 
     PlayerFourButtons.Visibility = Visibility.Collapsed; 
     PlayerThreeButtons.Visibility = Visibility.Visible; 

    } 

    private void MinusPlayerFive(object sender, TappedRoutedEventArgs e) 
    { 
     PlayerFiveName.Visibility = Visibility.Collapsed; 
     PlayerFiveTag.Visibility = Visibility.Collapsed; 
     PlayerFiveButtons.Visibility = Visibility.Collapsed; 
     PlayerFourButtons.Visibility = Visibility.Visible; 


    } 

    private void MinusPlayerSix(object sender, TappedRoutedEventArgs e) 
    { 
     PlayerSixTag.Visibility = Visibility.Collapsed; 
     PlayerSixName.Visibility = Visibility.Collapsed; 
     PlayerSixButtons.Visibility = Visibility.Collapsed; 
     PlayerFiveButtons.Visibility = Visibility.Visible; 
    } 

關於如何解決此問題的任何想法的C＃代碼，我將不勝感激！

Answer 1

當你添加播放器6時，你不會像其他按鈕的點擊一樣（我比較了不同的按鈕點擊/點擊，然後看到了問題）。在AddPlayerSix中，您直接在按鈕上工作，而不是在StackPanel上。下面的代碼工作：

private void AddPlayerSix(object sender, TappedRoutedEventArgs e) 
    { 
     PlayerSixName.Visibility = Visibility.Visible; 
     PlayerSixTag.Visibility = Visibility.Visible; 

     // Your code (not working) 
     //AddPlayerSixButton.Visibility = Visibility.Collapsed; 
     //MinusPlayerSixButton.Visibility = Visibility.Visible; 

     // New code (works) 
     PlayerFiveButtons.Visibility = Visibility.Collapsed; 
     PlayerSixButtons.Visibility = Visibility.Visible; 
    }