ArgumentException or ArgumentNullException for string parameters?

Question

Far as best practices are concerned, which is better:

public void SomeMethod(string str) 
{
    if(string.IsNullOrEmpty(str))
    {
        throw new Argumen         


        

Answer 1

I would suggest using the first one. If your method doesn't expects null or empty string it really doesn't matter if null or empty was passed - important to report and error and that is what 1st variant does.