如何获取列表框中单击按钮的索引

Question

我有一个列表框,每行都有删除按钮,所以当我点击删除按钮时,我需要点击列表框的索引,以便删除row.how我可以得到点击项目的索引吗？

这是我的列表框

 <ListBox  HorizontalAlignment="Left" Name="listBox1" Margin="-3,132,0,0" VerticalAlignment="Top" Width="498" SelectionChanged="listBox1_SelectionChanged">

            <ListBox.ItemTemplate>
                <DataTemplate>
                    <Border BorderThickness="0,1,0,0" BorderBrush="#FFC1BCBC" Width="490">
                        <Grid Height="70">
                            <Image Height="50" 
                           HorizontalAlignment="Left" 
                           Name="image" 
                           Stretch="Fill" 
                           VerticalAlignment="Top" 
                           Width="50" 
                           Source="{Binding iconPath}" Margin="8,8,0,0" />
                            <TextBlock Name="Name" Text="{Binding displayName}" VerticalAlignment="Center" Margin="60,0,0,0" Foreground="Black" FontWeight="SemiBold"></TextBlock>

                            <Button Name="btnDeleteRow" Width="50" Click="btnDeleteDashboard_Click" Margin="390,0,0,0" BorderBrush="Transparent" Style="{StaticResource logoutbtn_style}">

                            </Button>
                        </Grid>
                    </Border>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>

Answer 1

我假设您的ListBox是数据绑定到某些源集合？如果是这种情况,则按钮的DataContext将是您绑定项之一的实例.然后,您可以执行以下操作:

//例如,如果绑定MyDataObject实例列表...

// create a list
List<MyDataObject> myDataObjects = CreateTestData();

// bind it
listBox1.ItemSource = myDataObjects;

...

// in your click handler
private void btnDeleteDashboard_Click(object sender, EventArgs args)
{
  // cast the sender to a button
  Button button = sender as Button;

  // find the item that is the datacontext for this button
  MyDataObject dataObject = button.DataContent as MyDataObject;

  // get the index
  int index = myDataObjects.IndexOf(dataObject);
}