Unity 如何通过反射给gameObject添加组件

public static Component AddComponent(GameObject go, string assembly, string classname)
{
    var asmb = System.Reflection.Assembly.Load(assembly);
    var t = asmb.GetType(assembly + "." + classname);
    if(null != t)
        return go.AddComponent(t);
    else
        return null;
}

function AddComponent(go, classname)
    local com = go:GetComponent(classname)
    if com then return com end
    local t = System.Type.GetType(classname)
    if t then
        return go:AddComponent(t)
    end
    return nil
end

gameObject.AddComponent ("FoobarScript");//最好使用类型方式，提交效率如typeof(Rigidbody)

IEnumerator   Start () {
    this.gameObject.AddComponent(typeof(Rigidbody));   
    yield return new WaitForSeconds(0.5F);   
    Destroy(this.rigidbody);
  }