小编Ham*_*udy的帖子

当我删除列表框中的项目时,我收到问题中的错误,如下面的屏幕截图所示:

我不知道内部异常在哪里,但我尝试尝试,捕获但我在问题中得到了相同的错误.

这是所有代码:

namespace WpfApplication7
 {
/// <summary>
/// Interaction logic for Edit_Rooms.xaml
/// </summary>
public partial class Edit_Rooms : Window
{
    public Edit_Rooms()
    {
        InitializeComponent();
    }

    //initialises entities
    WpfApplication7.AllensCroftEntities1 allensCroftEntities1 = new WpfApplication7.AllensCroftEntities1();
    private Room ObjectIndex;

    private void Window_Loaded(object sender, RoutedEventArgs e)
    {
        // Load data into Rooms. 
        System.Windows.Data.CollectionViewSource roomsViewSource = ((System.Windows.Data.CollectionViewSource)(this.FindResource("roomsViewSource")));
        //runs a query to go the roomsQuery to get the rooms table from the entities
        System.Data.Objects.ObjectQuery<WpfApplication7.Room> roomsQuery = this.GetRoomsQuery(allensCroftEntities1);
        //used when adding new rooms
        roomsViewSource.Source = roomsQuery.Execute(System.Data.Objects.MergeOption.AppendOnly); …

我不应该得到负数,请看下面的截图:

见下图:

这是代码:

    for (double i=8.0; i<=12;i=i+0.5)
        {
          double aa=  (i - Convert.ToInt32(i)) ;
          Console.WriteLine(" "+i+" "+aa);
        }

我将以下数据存储为col？

Location
47.608941, -122.340145
55,66
33,22
55,22

如何忽略第一行并在Python中打印出其余部分？

for index in range(len(col)):
    print col[index]