Question

CA1004: Generic methods should provide type parameter

public static void IfNullAndNullsAreIllegalThenThrow<T>(object value)
{
    if (value == null && !(default(T) == null))
        throw new ArgumentException("Nulls are not allowed for this object.");
}

I found this method online, which is quite useful to be honest. But, it violates the CA1004 rule. I’m not sure if there is a better way to design the method and not violate the rules.

---

Sample usage:

public class SomeClass<T>
{
    public void SomeMethod(object obj)
    {
        // Ensure the actual object is not null if it shouldn't be.
        ThrowHelper.IfNullAndNullsAreIllegalThenThrow<T>(obj);

        // ...
    }
}

Answer 1

This looks like a helper method which is only used internally. Make it internal instead of public and the warning should go away.