public MarkAllItemsAsReadResponseType MarkAllItemsAsRead([System.Xml.Serialization.XmlElementAttribute("MarkAllItemsAsRead", Namespace = "http://schemas.microsoft.com/exchange/services/2006/messages")] MarkAllItemsAsReadType MarkAllItemsAsRead1) { object[] results = this.Invoke("MarkAllItemsAsRead", new object[] { MarkAllItemsAsRead1}); return ((MarkAllItemsAsReadResponseType)(results[0])); }