Deferred Query Execution : Deferred Query : LINQ C# Source Code

Deferred Query Execution

    
 
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 };

        int i = 0;
        var q =
            from n in numbers
            select ++i;
        foreach (var v in q) {
            Console.WriteLine("v = {0}, i = {1}", v, i);
        }
    }
}

 
    
   
  
   

Related in same category :
• How queries can be executed immediately with operators such as ToList().
• Shows how queries can be reused
• Deferred Query Execution
• Immediate Query Execution
• A deferred execution query is reevaluated when you reenumerate
• most query operators is that they execute not when constructed, but when enumerated