/// <summary> /// Extends BeginInvoke so that when a state object is not needed, null does not need to be passed. /// <example> /// memberfilter.BeginInvoke(m, filterCriteria, callback); /// </example> /// </summary> public static IAsyncResult BeginInvoke(this MemberFilter memberfilter, MemberInfo m, Object filterCriteria, AsyncCallback callback) { if (memberfilter == null) { throw new ArgumentNullException("memberfilter"); } return(memberfilter.BeginInvoke(m, filterCriteria, callback, null)); }