Question

What is the difference between LINQ and Lambda Expressions? Are there any advantages to using lambda instead of linq queries?

Answer 1

Linq is language integrated query. When using linq, a small anonymous function is often used as a parameter. That small anonymous function is a lambda expression.

var q = someList.Where(a => a > 7);

In the above query a => a > 7 is a lambda expression. It’s the equivalent of writing a small utility method and passing that to Where:

bool smallMethod(int value)
{
  return value > 7;
}

// Inside another function:
var q = someList.Where(smallMethod);

This means that your question is really not possible to answer. Linq and lambdas are not interchangeable, rather lambdas are one of the technologies used to implement linq.