How can I split and trim a string into parts all on one line?

I want to split this line:

string line = "First Name ; string ; firstName";

into an array of their trimmed versions:

"First Name"
"string"
"firstName"

How can I do this all on one line? The following gives me an error "cannot convert type void":

List<string> parts = line.Split(';').ToList().ForEach(p => p.Trim());