Can a C# lambda expression have more than one statement?

Question

Can a C# lambda expression include more than one statement?

(Edit: As referenced in several of the answers below, this question originally asked about \"lines\" rath

Answer 1

(I'm assuming you're really talking about multiple statements rather than multiple lines.)

You can use multiple statements in a lambda expression using braces, but only the syntax which doesn't use braces can be converted into an expression tree:

// Valid
Func a = x => x + 1;
Func b = x => { return x + 1; };        
Expression> c = x => x + 1;

// Invalid
Expression> d = x => { return x + 1; };