XmlElementListEnumerator.cs

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using System.Collections;
 
namespace System.Xml;
 
internal sealed class XmlElementListEnumerator : IEnumerator
{
    private readonly XmlElementList _list;
 
    private XmlNode _curElem;
 
    private int _changeCount;
 
    public object Current => _curElem;
 
    public XmlElementListEnumerator(XmlElementList list)
    {
        _list = list;
        _curElem = null;
        _changeCount = list.ChangeCount;
    }
 
    public bool MoveNext()
    {
        if (_list.ChangeCount != _changeCount)
        {
            throw new InvalidOperationException(System.SR.Xdom_Enum_ElementList);
        }
        _curElem = _list.GetNextNode(_curElem);
        return _curElem != null;
    }
 
    public void Reset()
    {
        _curElem = null;
        _changeCount = _list.ChangeCount;
    }
}