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

Everything leppie said - plus:

int index = mylist.FindIndex(p => p.id == 1);
if(index<0) {
    mylist.Add(car3);
} else {
    mylist[index] = car3;
}

This just uses the existing FindIndex to locate a car with id 1, then replace or add it. No LINQ; no SQL - just a lambda and List.