wpf - 代码中无法识别 WPF CommandParameter

Question

这是一个 WPF 应用程序。按钮为空且无法识别 CommandParameter。我不知道如何解决这个问题。有任何想法吗？这是代码：

私人无效Button_Click（对象发送者，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>

Answer 1

我已将 CommandParameter 更改为 Tag 并将 sender 作为 Button 更改为 (FrameworkElement)sender。

Tag="{Binding RelativeSource={RelativeSource AncestorType={x:Type TabItem}}, Path=Name}">


var button = (FrameworkElement)sender;
var tabName = button.Tag as string;