更新TextBlock绑定不工作

我有一个关于数据绑定的问题!我正在为一个"节点编辑器"编写代码，其中有一些(不同)节点。我使用BaseViewModel类，派生自INotifyPropertyChanged。

有一个'基' NodeViewModel(派生自它)与ObservableCollection和其他属性，如节点的Name属性。它的实现是这样的:

(在公共类NodeViewModel: BaseViewModel):

protected String mName = String.Empty;
public String Name {
    get { return mName; }
    set {
        if (mName == value) {
            return;
        }
        mName = value;
        OnPropertyChanged("Name");
    }
}

有一个OnPropertyChanged处理程序，看起来像这样:

( BaseViewModel )

protected virtual void OnPropertyChanged(string propertyName) {
    if (PropertyChanged != null) {
        PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
    }
}

现在我有一个额外的RoomViewModel派生自NodeViewModel。

我使用另一个不同的ViewModel，我称之为RoomCollectionViewModel来分组一些房间。现在，当我将一个房间添加到我的roomcollection中时(通过绘制它们之间的连接)，我测试所有连接的房间是否具有相同的名称。

如果集合中已经存在一个具有相同房名的已连接房间(例如:我想把那两个房间的名字改成。"新1号房间"answers"新2号房间"。到目前为止没有问题。

每个节点控件(使用DataTemplates创建，set DataContext设置为ViewModel)包含一个TextBlock(一个修改过的)，显示节点的名称。

这就是问题所在:

我使用修改后的Textblock，因为我希望能够通过双击来修改节点的名称。这是完美的，只有当我在代码中修改RoomViewModel的名字，这个(修改)TextBlock不会更新。

奇怪的是:当集合中两个同样命名的房间被我的代码重命名时，然后双击可编辑的TextBlock(在此过程中转换为TextBox)，我已经看到修改后的Text。所以我假设我的DataBinding和我的代码是正确的，只是不完整:)

那么如何有可能强制更新我的EditableTextBlock，文本(DependencyProperty)似乎更新正确…

我希望你能理解我的问题是什么!谢谢你的帮助。

更新1 这是我的EditableTextBlock的XAML代码(它来自这里:http://www.codeproject.com/Articles/31592/Editable-TextBlock-in-WPF-for-In-place-Editing)

<UserControl x:Class="NetworkUI.EditableTextBlock"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         xmlns:local="clr-namespace:NetworkUI"
         mc:Ignorable="d" 
         d:DesignHeight="60" d:DesignWidth="240" x:Name="mainControl">
<UserControl.Resources>
    <DataTemplate x:Key="EditModeTemplate">
        <TextBox KeyDown="TextBox_KeyDown" Loaded="TextBox_Loaded" LostFocus="TextBox_LostFocus"
                 Text="{Binding ElementName=mainControl, Path=Text, UpdateSourceTrigger=PropertyChanged}"
                 Margin="0" BorderThickness="1" />
    </DataTemplate>
    <DataTemplate x:Key="DisplayModeTemplate">
        <TextBlock Text="{Binding ElementName=mainControl, Path=FormattedText}" Margin="5,3,5,3" MouseDown="TextBlock_MouseDown" />
    </DataTemplate>
    <Style TargetType="{x:Type local:EditableTextBlock}">
        <Style.Triggers>
            <Trigger Property="IsInEditMode" Value="True">
                <Setter Property="ContentTemplate" Value="{StaticResource EditModeTemplate}" />
            </Trigger>
            <Trigger Property="IsInEditMode" Value="False">
                <Setter Property="ContentTemplate" Value="{StaticResource DisplayModeTemplate}" />
            </Trigger>
        </Style.Triggers>
    </Style>
</UserControl.Resources>

下面是代码隐藏文件:

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
namespace NetworkUI {
/// <summary>
/// Interaction logic for EditableTextBlock.xaml
/// </summary>
public partial class EditableTextBlock : UserControl {
    #region Dependency Properties, Events
    public static readonly DependencyProperty TextProperty =
        DependencyProperty.Register("Text", typeof(String), typeof(EditableTextBlock),
        new FrameworkPropertyMetadata("", FrameworkPropertyMetadataOptions.BindsTwoWayByDefault));
    public static readonly DependencyProperty IsEditableProperty =
        DependencyProperty.Register("IsEditable", typeof(Boolean), typeof(EditableTextBlock), new PropertyMetadata(true));
    public static readonly DependencyProperty IsInEditModeProperty =
        DependencyProperty.Register("IsInEditMode", typeof(Boolean), typeof(EditableTextBlock), new PropertyMetadata(false));
    public static readonly DependencyProperty TextFormatProperty =
        DependencyProperty.Register("TextFormat", typeof(String), typeof(EditableTextBlock), new PropertyMetadata("{0}"));
    #endregion ///Dependency Properties, Events

    #region Variables and Properties
    /// <summary>
    /// We keep the old text when we go into editmode
    /// in case the user aborts with the escape key
    /// </summary>
    private String oldText;
    /// <summary>
    /// Text content of this EditableTextBlock
    /// </summary>
    public String Text {
        get { return (String)GetValue(TextProperty); }
        set { SetValue(TextProperty, value); }
    }
    /// <summary>
    /// Is this EditableTextBlock editable or not
    /// </summary>
    public Boolean IsEditable {
        get { return (Boolean)GetValue(IsEditableProperty); }
        set { SetValue(IsEditableProperty, value); }
    }
    /// <summary>
    /// Is this EditableTextBlock currently in edit mode
    /// </summary>
    public Boolean IsInEditMode {
        get {
            if (IsEditable)
                return (Boolean)GetValue(IsInEditModeProperty);
            else
                return false;
        }
        set {
            if (IsEditable) {
                if (value)
                    oldText = Text;
                SetValue(IsInEditModeProperty, value);
            }
        }
    }
    /// <summary>
    /// The text format for the TextBlock
    /// </summary>
    public String TextFormat {
        get { return (String)GetValue(TextFormatProperty); }
        set  {
            if (value == "")
                value = "{0}";
            SetValue(TextFormatProperty, value);
        }
    }
    /// <summary>
    /// The formatted text of this EditablTextBlock
    /// </summary>
    public String FormattedText {
        get { return String.Format(TextFormat, Text); }
    }
    #endregion ///Variables and Properties

    #region Constructor
    /// <summary>
    /// Default constructor for the editable text block
    /// </summary>
    public EditableTextBlock() {
        InitializeComponent();
        Focusable = true;
        FocusVisualStyle = null;
    }
    #endregion ///Constructor

    #region Methods, Functions and Eventhandler
    /// <summary>
    /// Invoked when we enter edit mode
    /// </summary>
    /// <param name="sender">Sender</param>
    /// <param name="e">Event arguments</param>
    void TextBox_Loaded(object sender, RoutedEventArgs e) {
        TextBox txt = sender as TextBox;
        /// Give the TextBox input focus
        txt.Focus();
        txt.SelectAll();
    }
    /// <summary>
    /// Invoked when we exit edit mode
    /// </summary>
    /// <param name="sender">Sender</param>
    /// <param name="e">Event arguments</param>
    void TextBox_LostFocus(object sender, RoutedEventArgs e) {
        IsInEditMode = false;
    }
    /// <summary>
    /// Invoked when the user edits the annotation.
    /// </summary>
    /// <param name="sender">Sender</param>
    /// <param name="e">Event arguments</param>
    void TextBox_KeyDown(object sender, KeyEventArgs e) {
        if (e.Key == Key.Enter) {
            IsInEditMode = false;
            e.Handled = true;
        }
        else if (e.Key == Key.Escape) {
            IsInEditMode = false;
            Text = oldText;
            e.Handled = true;
        }
    }
    /// <summary>
    /// Invoked when the user double-clicks on the textblock
    /// to edit the text
    /// </summary>
    /// <param name="sender">Sender (the Textblock)</param>
    /// <param name="e">Event arguments</param>
    private void TextBlock_MouseDown(object sender, MouseButtonEventArgs e) {
        if (e.ClickCount == 2)
            IsInEditMode = true;
    }
    #endregion ///Methods, Functions and Eventhandler
}

谢谢你的帮助!

更新2

我修改了下面一行代码:

<TextBlock Text="{Binding ElementName=mainControl, Path=FormattedText}" Margin="5,3,5,3" MouseDown="TextBlock_MouseDown" />

:

<TextBlock Text="{Binding ElementName=mainControl, Path=Text}" Margin="5,3,5,3" MouseDown="TextBlock_MouseDown" />

，现在它正在工作!

我没有看到TextBlock使用FormattedText放在首位!啊，非常感谢你，现在一切更新完美!