Event Receiver for item deleting in calendar

I have two calendars, I created workflow that creates item to second calendar when item created in first calendar. in second calendar i created column 'Id odsustvo' where the workflow set item id of first list. I tryed that create event receiver, but he is not working. i cannot delete item in second list when is deleted item in first list. code is next

using System;
using System.Security.Permissions;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Security;
using Microsoft.SharePoint.Utilities;
using Microsoft.SharePoint.Workflow;
namespace brisanje_stavke_iz_karneta_eventreceiver.EventReceiver1
{
///
/// List Item Events
///
public class EventReceiver1 : SPItemEventReceiver
{
private static string ID;
///
/// An item is being deleted.
///
public override void ItemDeleting(SPItemEventProperties properties)
{
base.ItemDeleting(properties);
ID = properties.ListItem["ID"].ToString();
}
///
/// An item was deleted.
///
public override void ItemDeleted(SPItemEventProperties properties)
{
string ID1 = ID;
int IDConverted = Convert.ToInt32(ID1);
SPSite ListSite = new SPSite(properties.Web.Url);
SPWeb ListWeb = ListSite.OpenWeb();
SPQuery query = new SPQuery();
query.Query = "" +
"" +
"" +
"ID1Converted" +
"" +
"";
SPListItem KarnetItem = ListWeb.Lists["Karnet"].GetItems(query)[0];
KarnetItem.Delete();
base.ItemDeleted(properties);
}
}
}

i tryed that assign value item id to variable ID in ItemDeleting. next this variable i use for filtering second list query.Query, then selected item i delete with KarnetList.Delete(); , but nothing.

I noticed that my code deletes an item from calendar view of the second list, but not from all items view. why?

Some guide for my help?