WPF自定义依赖集合属性无法触发更新的问题

最新推荐文章于 2023-06-03 14:41:44 发布

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最新推荐文章于 2023-06-03 14:41:44 发布 · 1.3k 阅读

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原文链接：http://www.cnblogs.com/cangyue080180/p/5670649.html

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#c# #测试

　　通常WPF中通过继承UserControl的来快速创建自定义控件，最近项目上需要设计一个卫星星图显示控件，最终效果如下图所示。完成过程中遇到了自定义集合依赖属性无法触发更新通知的问题，在此记录一下，方便有相同问题的朋友们可以快速解决，也希望有人能发现更好的解决办法。

　　为了完成目的，我写了下面一个SateChart自定义控件类，

XAML代码如下：

<UserControl x:Class="WpfApplication1.SateChart"
             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" 
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300" >
    <DockPanel Margin="5" LastChildFill="True">
        <StackPanel Margin="1" DockPanel.Dock="Top" Orientation="Horizontal" HorizontalAlignment="Center">
            <Rectangle Fill="Orange" Width="10" Height="10"/>
            <CheckBox Name="bdView" Content="BD-2" Margin="5,0,5,0"  IsChecked="True" Click="bdView_Click"/>
            <Rectangle Fill="Red" Width="10" Height="10"/>
            <CheckBox Name="gpsView" Content="GPS" Margin="5,0,5,0"    IsChecked="True" Click="gpsView_Click"/>
            <Rectangle Fill="Blue" Width="10" Height="10"/>
            <CheckBox Name="glnssView" Content="GLNS" Margin="5,0,5,0"   IsChecked="True" Click="glnssView_Click"/>
        </StackPanel>
        <Viewbox DockPanel.Dock="Bottom" MaxHeight="300" MaxWidth="300">
            <Canvas Name="myCanvas" Width="90" Height="90" >
                <Ellipse Name="e1" Width="90" Height="90" Fill="Black" Stroke="Black"
                                 HorizontalAlignment="Center"/>
                <Ellipse Name="e2" Width="90" Height="90" Fill="Black" Stroke="White"
                                 HorizontalAlignment="Center">
                    <Ellipse.RenderTransform>
                        <ScaleTransform ScaleX="0.8333" ScaleY="0.8333" CenterX="45" CenterY="45"/>
                    </Ellipse.RenderTransform>
                </Ellipse>
                <Ellipse Name="e3" Width="90" Height="90" Fill="Black" Stroke="White"
                                 HorizontalAlignment="Center">
                    <Ellipse.RenderTransform>
                        <ScaleTransform ScaleX="0.6666" ScaleY="0.6666" CenterX="45" CenterY="45"/>
                    </Ellipse.RenderTransform>
                </Ellipse>
                <Ellipse Name="e4" Width="90" Height="90" Fill="Black" Stroke="White"
                                 HorizontalAlignment="Center">
                    <Ellipse.RenderTransform>
                        <ScaleTransform ScaleX="0.5" ScaleY="0.5" CenterX="45" CenterY="45"/>
                    </Ellipse.RenderTransform>
                </Ellipse>
                <Ellipse Name="e5" Width="90" Height="90" Fill="Black" Stroke="White"
                                 HorizontalAlignment="Center">
                    <Ellipse.RenderTransform>
                        <ScaleTransform ScaleX="0.333" ScaleY="0.333" CenterX="45" CenterY="45"/>
                    </Ellipse.RenderTransform>
                </Ellipse>
                <Ellipse Name="e6" Width=