我很菜鳥WPF。我創建一個WPF應用程序，使用EmguCV庫image Processing。我發現我不能ImageBox在WPF. 所以我用NamedWindow來顯示image然后我決定用Image Control來顯示window. 我想提請rectangle在那image，但矩形在其他地方沒有畫出。所以誰能告訴我代碼中有什么問題。基本上我想獲取該圖像的投資回報率。編輯：- 我把Canvas里面grid放了Image Control里面Canvas**我的 XAML 代碼 **<Grid Margin="0,0,2,-1">    <Grid.ColumnDefinitions>        <ColumnDefinition Width="138*"/>        <ColumnDefinition Width="139*"/>    </Grid.ColumnDefinitions>    <Button x:Name="button" Content="Convert" Margin="139.053,432.066,0,0" Click="button_Click" Height="27.934" VerticalAlignment="Top" HorizontalAlignment="Left" Width="113.947" Grid.Column="1"/>    <Button x:Name="button1" Content="Load Palette" Margin="308,432.066,0,0" Click="button1_Click_1" Height="27.934" VerticalAlignment="Top" HorizontalAlignment="Left" Width="75" Grid.ColumnSpan="2"/>    <Button x:Name="button2" Content="Load Gray Image" Margin="48,432.066,0,0" Click="button2_Click" Height="27.934" VerticalAlignment="Top" HorizontalAlignment="Left" Width="104"/>    <Canvas x:Name="MyCanvas" Margin="81,86.5,27.245,120.5" Grid.Column="1">        <Image x:Name="image3" Height="263" Width="238"/>    </Canvas>    <Image x:Name="image1" HorizontalAlignment="Left" Height="263" Margin="10,86.5,0,0" VerticalAlignment="Top" Width="255.5"/>    <Image x:Name="image2" Grid.ColumnSpan="2" HorizontalAlignment="Left" Height="393" Margin="308,10,0,0" VerticalAlignment="Top" Width="75"/></Grid>我使用Event Handler過Canvas，但它不顯示rectangle提前致謝