Re: How to remove an item(s) from a Collection by query

11-03-2009 5:02 PM |

Hi

With collection (List, Dictionary....)?

However must be similar than :

To search ??collection.FindFirst(x => x.??? == ??  ) or ??collection.Single(x => x.?? ? ??)  

To delete ???collection.Remove(item) or ???collection.RemoveAt(2)

Re: How to remove an item(s) from a Collection by query

11-04-2009 8:06 AM |

First, you need to create a separate list of items to be removed. The first pass from the query, you can insert items into the list, like this:

List<string> days = new List<string> {"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"};
IEnumerable<string> daysStartWithT =
                                from day in days
                                where day.StartsWith("T")
                                select day;

foreach(var day in daysStartWithT)
{
   days.Remove(day);
}