访问结构的字段

为什么下面的代码不产生输出?

static void Main(string[] args)
{
    FieldInfo[] fi = typeof(MyStruct).GetFields(BindingFlags.Public);
    foreach (FieldInfo info in fi)
    {
        Console.WriteLine(info.Name);
    }
}

public struct MyStruct
{
    public int one;
    public int two;
    public int three;
    public int four;
    public int five;
    public int six;
    public bool seven;
    public String eight;
}