How to Resolve Use Lambda Expression

14 Feb 2014 | Less than one-minute read

As someone relatively new to C#, I don’t always think of the simplest way to express my intent. We use Resharper in my workplace and it is quite good at picking up where I think too much in C++.

A common message I get is

Use lambda expression

but I usually forget how to fix it, even though it is trivial. Let’s look at a simple example that gives the message:

List<int> list = new List<int>();
//The list gets populated with values
List<int> matches = list.FindAll(val => { return val != 9});

The fix is simple, remove the braces and return statement

List<int> list = new List<int>();
//The list gets populated with values
List<int> matches = list.FindAll(val => val != 9);