用DOM实现文章采集--通过jquery语法式的方法采集指定对象的文本

[csharp]
/// <summary> 
/// DOM查询器，用法跟jquery差不多 
/// </summary> 
public class DomQuery 
{ 
    /// <summary> 
    /// 获得节点 
    /// </summary> 
    /// <param name="_HtmlDocument"></param> 
    /// <param name="selector"></param> 
    /// <returns></returns> 
    /// <remarks>DOM选择器，用法跟jquery差不多</remarks> 
    public IList<HtmlNode> Get(HtmlDocument _HtmlDocument, string selector) 
    { 
        string[] Expressions = selector.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries); 
 
        List<HtmlNode> hnList = new List<HtmlNode>(); 
 
        if (Expressions[0].StartsWith("#")) 
        { 
            hnList.Add(_HtmlDocument.GetElementbyId(Expressions[0].TrimStart('#'))); 
            hnList.RemoveAll(x => { return x == null; }); 
 
            if (Expressions.Length == 1) 
            { 
                return hnList; 
            } 
 
            for (int i = 1; i < Expressions.Length; i++) 
            { 
                hnList = Get(hnList, Expressions[i]); 
            } 
        } 
        else 
        { 
            hnList.AddRange(_HtmlDocument.DocumentNode.ChildNodes.Where(x => { return x.NodeType == HtmlNodeType.Element; })); 
 
            for (int i = 0; i < Expressions.Length; i++) 
            { 
                hnList = Get(hnList, Expressions[i]);