Lambda expression

Question

Hi As I am new to LINQ please tell me what is Lambda expression?

Jignesh Trivedi · Answer

hi A lambda expression is nothing but inline delegate function. In lambda expression delegate and function both define in same line. for more info please refer. http://msdn.microsoft.com/en-us/library/bb397687.aspx http://geekswithblogs.net/dotnetnomad/archive/2008/01/29/119037.aspx

Satyapriya Nayak · Answer

Hi Akash Please refer Our recommended articles. Thanks

Karthik Agarwal · Answer

A lambda expression is an anonymous function that can contain expressions and statements and can be used to create delegates or expression tree types. All lambda expressions use the lambda operator => which is read as goes to. The left side of the lambda operator specifies the input parameters (if any) and the right side holds the expression or statement block. The lambda expression x => x * x is read x goes to x times x. This expression can be assigned to a delegate type as follows: C# Copy delegate int del(int i); static void Main(string[] args) { del myDelegate = x => x * x; int j = myDelegate(5); //j = 25 } To create an expression tree type: C# Copy using System.Linq.Expressions; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { Expression myET = x => x * x; } } } The => operator has the same precedence as assignment (=) and is right-associative. Lambdas are used in method-based LINQ queries as arguments to standard query operator methods such as Where. Check this link for more info: http://msdn.microsoft.com/en-us/library/bb397687%28v=VS.90%29.aspx