public string TextContent
{
    get { return (string)GetValue(TextContentProperty); }
    set { SetValue(TextContentProperty,value); Debug.WriteLine("Setting value of TextContent: " + value); }
}

public static readonly DependencyProperty TextContentProperty =
    DependencyProperty.Register("TextContent",typeof(string),typeof(MarkdownEditor),new UIPropertyMetadata(""));

… …

<TextBox Text="{Binding TextContent}" />

正如我注意到下面在我的安装程序不运行

Debug.WriteLine("Setting value of TextContent: " + value);