C# findindex with multiple expressions

Question

How can I search a list for two different things?

For example, this code works perfectly fine:

int index = mylistofobjects.FindIndex(a => a.firstname == "Bob");

Is there a way to change it to something like this?

int index = mylistofobjects.FindIndex(a => a.firstname == "Bob", a.lastname == "Smith");

I'm trying to return the mylistofobjects instance that has first name Bob and lastname Smith.

Thanks for the help.

Answer 1

Try this:

int index = mylistofobjects.FindIndex(a => a.firstname == "Bob"&& a.lastname == "Smith");

Answer 2

Use && operator.

int index = mylistofobjects.FindIndex(a => a.firstname == "Bob" && a.lastname == "Smith");