windows-phone-7 - 当用户单击 Windows Phone 8 中列表项中的按钮时如何获取列表项索引

Question

我的应用程序中有列表框。下面是屏幕截图。

当用户单击列表项时，我将显示详细页面。它正在处理以下选择更改的侦听器。

private void companiesList_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {            
            //get the selected item from list
            Company selectedItem = (Company)e.AddedItems[0];

     Uri uri = new Uri("/CompanyDetailsPage.xaml", UriKind.Relative);
            //navigate to target page
            this.NavigationService.Navigate(uri);

            FrameworkElement root = Application.Current.RootVisual as FrameworkElement;
            root.DataContext = selectedItem;
}
}

到此为止还好。

现在，当用户单击该项目上的“删除”按钮时，我必须从列表中删除该项目。

private void Del_Btn_clicked(object sender, RoutedEventArgs e)
    {
        //get the Corresponding item from list i.e. On which delete button is placed.
    //Delete saved company from the database   


    }

我无法获得放置删除按钮的特定列表项索引。何我能得到。

谢谢。

Answer 1

sender您可以通过转换参数来检索按钮。从那里，您可以通过转换 DataContext 属性来检索公司：

private void Del_Btn_clicked(object sender, RoutedEventArgs e)
{
    var button = (Button)sender;

    var company = (Company)button.DataContext;

    // ...
}

Answer 2

do get the index of the listbox you can direct set the property

SelectedIndex = {Binding asd,Mode=TwoWay}

then in viewmodel

make a property

private int _asd;
public int asd
{
get
{
return _asd;
}
set
{
_asd= value;
}
}

by this you will get the index of selected item ... hopes it might help ..