How queries can be executed immediately with operators such as ToList(). : Deferred Query « LINQ « C# / C Sharp

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C# / C Sharp » LINQ » Deferred Query

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How queries can be executed immediately with operators such as ToList().

 

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;



public class MainClass {

    public static void Main() {

        int[] numbers = new int[] { 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 };



        int i = 0;

        var q = (

            from n in numbers

            select ++i)

            .ToList();



        // The local variable i has already been fully

        // incremented before we iterate the results:

        foreach (var v in q) {

            Console.WriteLine("v = {0}, i = {1}", v, i);

        }

    }

}

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.	Shows how queries can be reused
3.	Deferred Query Execution
4.	Immediate Query Execution
5.	A deferred execution query is reevaluated when you reenumerate:
6.	most query operators is that they execute not when constructed, but when enumerated

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