小编chr*_*ris的帖子

我正在尝试创建一个用户控件,根据用户在依赖项属性中设置的模式,将用户控件更改为TextBlock和另一个TextBlock或TextBlock和TextBox.我知道依赖属性正在获取信息,但是当我尝试设置正确的模板时会出现问题.由于某种原因,模板无法正确呈现.

XAML:

<UserControl x:Class="BookOrganizer.FlipBox"
         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:my="clr-namespace:BookOrganizer"
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="300">
<StackPanel Orientation="Horizontal" Height="Auto" Width="Auto" >
    <StackPanel.Resources>
        <ContentControl x:Key="Box">
            <StackPanel Orientation="Horizontal">
                <TextBlock Text="{Binding Path=Title}" Height="Auto" Width="Auto" />
                <TextBox Text="{Binding Path=Text}" Height="Auto" Width="Auto" />
            </StackPanel>
        </ContentControl>
        <ContentControl x:Key="Block" Height="Auto" Width="Auto">
            <StackPanel Orientation="Horizontal" Height="Auto" Width="Auto">
                <TextBlock Text="{Binding Path=Title}" Height="Auto" Width="Auto" />
                <TextBlock Text="{Binding Path=Text}" Height="Auto" Width="Auto"/>
            </StackPanel>
        </ContentControl>
    </StackPanel.Resources>
    <ContentControl Template="{Binding Path=BoxMode}" />
</StackPanel>

代码背后:

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

namespace BookOrganizer
{
    /// <summary>
    /// Interaction logic for FlipBox.xaml …

所以我创建了这个类Sprite.cs:

class Sprite : INotifyPropertyChanged
{
    double _Speed;        
    RectangleGeometry _SpriteRectangleGeometry;
    Path _SpritePath;
    public Sprite()
    {
        _SpriteRectangleGeometry = new RectangleGeometry();
        _SpriteRectangleGeometry.Rect = new Rect(0, 0, 50, 50);
        Speed = 50;
        _SpritePath = new Path();
        Color = Brushes.Black;
        _SpritePath.Data = _SpriteRectangleGeometry;
    }
    public Sprite(double xpos, double ypos, double height, double width, double speed, SolidColorBrush color)
    {
        _SpriteRectangleGeometry = new RectangleGeometry();
        _SpriteRectangleGeometry.Rect = new Rect(xpos, ypos, width, height);
        this.Speed = speed;
        _SpritePath = new Path();
        this.Color = color;
        _SpritePath.Data = _SpriteRectangleGeometry;
    }
    public …