在新窗口中绑定TextBlock文本？

Question

我已经创建了一个警告窗口，使用Window.ShowDialog并设置DialogResult来验证用户的删除操作。 一切工作正常，除了警告文本未出现在TextBlock而且我也不知道为什么。 这是我的Window ：

<Window x:Class="RoVCo.Windows.VerifyWindow"
        ....
        WindowStyle="None" Padding="10" ResizeMode="NoResize">
        <StackPanel>
            <TextBlock Height="Auto" Text="{Binding TBText, Mode=OneWay}" Foreground="Yellow" TextWrapping="Wrap" />
            <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="0,10,0,0">
                <Button Content="Cancel" Margin="10,0" Width="50" Click="CancelVerify" />
                <Button Content="OK" Width="50" Click="ConfirmVerify" />
            </StackPanel>
        </StackPanel>
</Window>

和班级：

public partial class VerifyWindow : Window
{
    public VerifyWindow(string content)
    {
        InitializeComponent();
        _text = content;
    }
    private string _text = "";
    public string TBText { get { return _text; } }

    private void CancelVerify(object sender, RoutedEventArgs e)
    {
        this.DialogResult = false;
        this.Close();
    }
    private void ConfirmVerify(object sender, RoutedEventArgs e)
    {
        this.DialogResult = true;
        this.Close();
    }
}

我这样称呼它：

var window = new RoVCo.Windows.VerifyWindow("Removing this skill will erase all DP spent on it from all levels. Continue?");
if (window.ShowDialog() == false) return;

Answer 1

为了使用绑定，您需要本地属性是公共的，并且是通知属性或依赖项属性。

Answer 2

您可以尝试此解决方案。

1. 将您的VerifyWindow构造函数更改为：

   公共VerifyWindow（）{InitializeComponent（）; }

并删除TBText和_text代码。

1. 创建一个名为VerifyViewModel的新类

   公共类VerifyViewModel：INotifyPropertyChanged {public VerifyViewModel（string content）{this.TBText = content; }

    public string TBText { get; private set; } #region INPC code - can create an abstract base view model class and put this there instead public event PropertyChangedEventHandler PropertyChanged; protected void OnPropertyChanged(string propertyName) { this.OnPropertyChanged(new PropertyChangedEventArgs(propertyName)); } protected virtual void OnPropertyChanged(PropertyChangedEventArgs e) { var handler = this.PropertyChanged; if (handler != null) { handler(this, e); } } #endregion 

   }

2. 如下调用此代码

   var viewmodel = new VerifyViewModel（“取消此技能将从所有级别上擦除花费在它上面的所有DP。继续吗？”）；

     var window = new VerifyWindow { DataContext = viewmodel }; if (window.ShowDialog() == false) return; 

Answer 3

如果它只是您在Dialog中使用的单个属性，我认为使用DependancyProperty将是更好的选择，然后添加所有INotifyPropertyChanged逻辑

public partial class VerifyWindow : Window
{
    public VerifyWindow(string content)
    {
        InitializeComponent();
        TBText = content;
    }

    public static readonly DependencyProperty TBTextProperty =
        DependencyProperty.Register("TBText", typeof(string), typeof(VerifyWindow), new UIPropertyMetadata(string.Empty));

    public string TBText
    {
        get { return (string)GetValue(TBTextProperty); }
        set { SetValue(TBTextProperty, value); }
    }

    private void CancelVerify(object sender, RoutedEventArgs e)
    {
        this.DialogResult = false;
        this.Close();
    }
    private void ConfirmVerify(object sender, RoutedEventArgs e)
    {
        this.DialogResult = true;
        this.Close();
    }
}