/// <summary>
/// 获取所有后继兄弟节点
/// </summary>
/// <returns></returns>
protected virtual IList <T> GetNextSiblingNodes()
{
if (SiblingNodes != null)
{
IEnumerable <T> nsibs = SiblingNodes.Where(tent => tent.SortIndex > this.SortIndex);
if (nsibs.Count() > 0)
{
return(nsibs.ToList());
}
}
return(null);
}
/// <summary>
/// 获取后继兄弟节点
/// </summary>
/// <returns></returns>
protected virtual T GetNextSibling()
{
if (SiblingNodes != null)
{
IEnumerable <T> psibs = SiblingNodes.Where(tent => tent.SortIndex > this.SortIndex);
if (psibs.Count() > 0)
{
// 从小到大排序的第一个
return(psibs.OrderBy(tent => tent.SortIndex).First());
}
return(null);
}
return(null);
}
/// <summary>
/// 获取前置兄弟节点
/// </summary>
/// <returns></returns>
protected virtual T GetPrevSibling()
{
if (SiblingNodes != null)
{
IEnumerable <T> psibs = SiblingNodes.Where(tent => tent.SortIndex < this.SortIndex);
if (psibs.Count() > 0)
{
// 从大到小排序的第一个
return(psibs.OrderByDescending(tent => tent.SortIndex).First());
}
return(null);
}
return(null);
}
