/// <summary>
/// 移除所有的子元素
/// </summary>
public override void RemoveAllChildren()
{
MetaElement element2;
for (MetaElement element = this.FirstChild; element != null; element = element2)
{
element2 = element.NextSibling();
this.RemoveChild <MetaElement>(element);
}
}
/// <summary>
/// 获取枚举器
/// </summary>
/// <returns></returns>
public override IEnumerator <MetaElement> GetEnumerator()
{
if (!this._container.HasChildren || (this._container.FirstChild == null))
{
goto labl_ret;
}
MetaElement firstChild = this._container.FirstChild;
while (firstChild != null)
{
yield return(firstChild);
firstChild = firstChild.NextSibling();
}
labl_ret :;
}
/// <summary>
/// 根据下标获取元素
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
public override MetaElement GetItem(int index)
{
if (this._container.HasChildren)
{
for (MetaElement element = this._container.FirstChild; element != null; element = element.NextSibling())
{
if (index == 0)
{
return(element);
}
index--;
}
}
throw new ArgumentOutOfRangeException("index");
}