List Manipulation in C# using Linq

Question

using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;

namespace ConsoleApplication1
{

    public cla         


        

Answer 1

As Leppie said, LINQ is for querying rather than updating. However, that can be used to build a new list:

mylist = new List<Car>(from car in mylist select car.id == 1? car3 : car)

That is if you want to use LINQ. It's nice and short code, of course, but a bit less efficient than Marc Gravell's suggestion, as it effectively creates a new list, rather than updating the old one.

Answer 2

You can use this way :

(from car in mylist
where car.id == 1
select car).Update(
car => car.id = 3);

My reference is this website. Or following is the code for Update method

public static void Update<T>(this IEnumerable<T> source, params Action<T>[] updates)
{
    if (source == null)
        throw new ArgumentNullException("source");

    if (updates == null)
        throw new ArgumentNullException("updates");

    foreach (T item in source)
    {
        foreach (Action<T> update in updates)
        {
            update(item);
        }
    }
}