System.Xml.XmlElementListEnumerator.MoveNext C# (CSharp) Method

        public bool MoveNext() { 
            if ( list.ChangeCount != this.changeCount ) {
                //the number mismatch, there is new change(s) happened since last MoveNext() is called.
                throw new InvalidOperationException( Res.GetString(Res.Xdom_Enum_ElementList) );
            } 
            else  {
                curElem = list.GetNextNode( curElem );                
            }
            return curElem != null;
        }