SharePoint ListItemCollection deleting listems

I need to delete listitems within a listitemcollection based on the value of a column.  It fails as I am deleting items within the collection so the enumeration throws exception on next iteration after a delete.  The code follows:

public static void DeletListItemsByParentID(string siteUrl, string listName, string ListIDColumnName, double ItemID)
        {
            try
            {
                using (ClientContext ctx = new ClientContext(siteUrl))
                {
                    ListItemCollection lic = SharePointHelper.GetListItems(ctx, listName);
                    foreach (ListItem l in lic)
                    {
                        object i = l[ListIDColumnName];
                        if ((double)i == ItemID)
                        {
                            l.DeleteObject();
                        }

                    }
                    ctx.ExecuteQuery();
                }

            }
            catch (SystemException ex)
            {
                throw new SystemException("Exception thrown in SharePointHelper.DeletListItemsByParentID", ex);
            }
        }

Select allOpen in new window