most query operators is that they execute not when constructed, but when enumerated : Deferred Query « LINQ « C# / C Sharp

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most query operators is that they execute not when constructed, but when enumerated

 



using System;

using System.Collections.Generic;

using System.Linq;



public class MainClass {

    public static void Main() {

        var numbers = new List<int>();

        numbers.Add(1);

        IEnumerable<int> query = numbers.Select(n => n * 10);

        numbers.Add(2);             

        foreach (int n in query)

            Console.Write(n + "|"); 

    }

}

Related examples in the same category

1.	Deferred Query Execution: shows how query execution is deferred until the query is enumerated at a foreach statement.
2.	How queries can be executed immediately with operators such as ToList().
3.	Shows how queries can be reused
4.	Deferred Query Execution
5.	Immediate Query Execution
6.	A deferred execution query is reevaluated when you reenumerate:

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