WPF CommandParameter无法在代码中识别
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21-12-2019 - |
题
这是一个wpf应用程序。按钮是null,无法识别命令参数。我不确定如何解决这个问题。有任何想法吗? 这是代码:
私有void button_click(对象发件人,routedeventargs e)
var button = (Button) sender;
var userName = button.CommandParameter;
<TabControl Name="ImTabControl"
Width="670"
Height="450"
Margin="0,10,5,0"
HorizontalAlignment="Right"
VerticalAlignment="Top"
ItemsSource="{Binding}">
<TabControl.Resources>
<DataTemplate x:Key="TabHeader" DataType="TabItem">
<StackPanel Orientation="Horizontal">
<TextBlock Margin="0,0,5,0"
HorizontalAlignment="Left"
VerticalAlignment="Center"
Text="{Binding RelativeSource={RelativeSource AncestorType={x:Type TabItem}},
Path=Header}" />
<Button Name="ImButton"
Click="CloseTabButton_OnClick"
CommandParameter="{Binding RelativeSource={RelativeSource AncestorType={x:Type TabItem}},
Path=Name}">
<Image Width="7"
Height="7"
Source="../Resources/Images/CloseWindow.png" />
</Button>
</StackPanel>
</DataTemplate>
</TabControl.Resources>
</TabControl>
. 解决方案
我已将CommandParameter更改为标记和发送者作为按钮(FrameworkElement)发件人。
Tag="{Binding RelativeSource={RelativeSource AncestorType={x:Type TabItem}}, Path=Name}">
var button = (FrameworkElement)sender;
var tabName = button.Tag as string;
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