C# best way to convert object to string array

Question

I am stuck in something. I want to convert this object, which is a array of objects, into a array of strings I cannot find a good way to do that. Do I need to use a for loop? If someone can also tell me why these 2 methods failed, I will appreciate.

    object greetings = new object[] { "hi", "hello", "greetings" };
    if (greetings.GetType().IsArray)
    {
        //string[] arr = greetings as string[];
        //string[] arr = (string[])greetings;
    }

Answer 1

string[] arr = Array.ConvertAll((object[])greetings, Convert.ToString);