C# Lambda expressions: Why should I use them?

Question

I have quickly read over the Microsoft Lambda Expression documentation.

This kind of example has helped me to understand better, though:

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Answer 1

You can also find the use of lambda expressions in writing generic codes to act on your methods.

For example: Generic function to calculate the time taken by a method call. (i.e. Action in here)

public static long Measure(Action action)
{
    Stopwatch sw = new Stopwatch();
    sw.Start();
    action();
    sw.Stop();
    return sw.ElapsedMilliseconds;
}

And you can call the above method using the lambda expression as follows,

var timeTaken = Measure(() => yourMethod(param));

Expression allows you to get return value from your method and out param as well

var timeTaken = Measure(() => returnValue = yourMethod(param, out outParam));