Lambda Query

What is a Lambda Expression?

            A lambda expression is an anonymous function. It allows to write a method in the same place you are going to use it.

 syntax : Parameters => Executed code.

Basic Lambda Expression

1)Where

  List<int> mark = new List<int>{90, 71, 82, 93, 75, 82 };

  var result= mark.Where(n => n > 80);

  Console.WriteLine("Values greater than 80 are");  

  foreach(val item in result)

     { 

      Console.WriteLine("{0}", item ); 

     }

// Outputs: 

// Value greater than 80 are

// 90

// 82 

// 93

// 82

2)Count()

  int result= mark.Where(n => n > 80).Count() ;

  Console.WriteLine("{0} markare greater than 80", result);

 // Outputs: 

 // 4 mark are greater than 80

3)Sum()

 int result= mark.Where(n => n > 80).Count() ;

 Console.WriteLine("{0} markare greater than 80", result);   

// Outputs: 

// Sum of mark greater than 80 are

// 347