C# WPF文本块不显示自定义设置

我有一个程序，从erp文档处理源加载图片，并允许通过触摸或鼠标移动和调整大小。有一个叫做Picture的类：

using System.Windows;
using System.Windows.Controls;

namespace DocumentHandlingTouch
{
    /// <summary>
    /// Interaction logic for Picture.xaml
    /// </summary>
    public partial class Picture : UserControl
    {
      
        public Picture()
        {
            InitializeComponent();
            DataContext = this;
          
        }

        public string ImagePath
        {
            get { return (string)GetValue(ImagePathProperty); }
            set { SetValue(ImagePathProperty, value); }
        }

        public string ImageName
        {
            get { return (string)GetValue(ImageNameProperty); }
            set { SetValue(ImageNameProperty, value); }
        }
        public static readonly DependencyProperty ImageNameProperty =
    DependencyProperty.Register("ImageName", typeof(string), typeof(Picture), new UIPropertyMetadata(""));
        // Using a DependencyProperty as the backing store for ImagePath.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty ImagePathProperty =
            DependencyProperty.Register("ImagePath", typeof(string), typeof(Picture), new UIPropertyMetadata(""));

        public string OriginalImagePath
        {
            get { return (string)GetValue(OriginalImagePathProperty); }
            set { SetValue(OriginalImagePathProperty, value); }
        }

        public static readonly DependencyProperty OriginalImagePathProperty =
            DependencyProperty.Register("OriginalImagePath", typeof(string), typeof(Picture), new UIPropertyMetadata(""));

        public double Angle
        {
            get { return (double)GetValue(AngleProperty); }
            set { SetValue(AngleProperty, value); }
        }

        // Using a DependencyProperty as the backing store for Angle.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty AngleProperty =
            DependencyProperty.Register("Angle", typeof(double), typeof(Picture), new UIPropertyMetadata(0.0));

        


        public double ScaleX
        {
            get { return (double)GetValue(ScaleXProperty); }
            set { SetValue(ScaleXProperty, value); }
        }

        // Using a DependencyProperty as the backing store for ScaleX.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty ScaleXProperty =
            DependencyProperty.Register("ScaleX", typeof(double), typeof(Picture), new UIPropertyMetadata(1.0));

        public double ScaleY
        {
            get { return (double)GetValue(ScaleYProperty); }
            set { SetValue(ScaleYProperty, value); }
        }
    
        // Using a DependencyProperty as the backing store for ScaleY.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty ScaleYProperty =
            DependencyProperty.Register("ScaleY", typeof(double), typeof(Picture), new UIPropertyMetadata(1.0));

        public double X
        {
            get { return (double)GetValue(XProperty); }
            set { SetValue(XProperty, value); }
        }

        // Using a DependencyProperty as the backing store for X.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty XProperty =
            DependencyProperty.Register("X", typeof(double), typeof(Picture), new UIPropertyMetadata(0.0));


        public double Y
        {
            get { return (double)GetValue(YProperty); }
            set { SetValue(YProperty, value); }
        }

        // Using a DependencyProperty as the backing store for Y.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty YProperty =
            DependencyProperty.Register("Y", typeof(double), typeof(Picture), new UIPropertyMetadata(0.0));
    }
}

问题是textblock没有改变它的样式…它不是粗体的，它没有垂直放置在底部，它没有包装。它只是用一种朴素的旧字体与图片相呼应。 我做错了什么？

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编辑我注释掉了文本块，图像路径仍然显示出来。显示的是ImagePath依赖项属性吗？我很困惑

您忘记将textblock添加到画布：

_canvas.Children.Add(tb);

编辑

如果图片用户控件中有textblock，则不能在代码隐藏中创建新的文本块

在Picture.xaml中，您应该定义文本块的名称：

<TextBlock x:Name="TextBlock1 />

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tb与图片一起添加：Dispatcher.Invoke（（操作）（（）=>\u canvas.Children.Add（p））；我试着单独添加，结果是一样的。Textblock就在那里，只是在您的问题中的代码示例中没有格式化，您正在创建新的Textblock。您正在设置新文本块的属性，而不是图片中的文本块。

<TextBlock x:Name="TextBlock1 />

TextBlock tb = p.TextBlock1;