HTML敏捷包：解析一个href标记 [英] HTML Agility pack: parsing an href tag

问题描述

我将如何有效地从这个解析href属性值：

 ＆LT; TR＆GT;
＆所述; TD行跨度=1列跨度=1大于7＆下; / TD＆GT;
＆所述; TD行跨度=1列跨度=1＆GT;
＆LT;一类=undMe的href =的rel =skaterLinkData形状=矩形＆GT/冰/ player.htm ID = 8475179？; d。库利科夫＆LT; / A＆GT;
＆LT; / TD＆GT;
＆所述; TD行跨度=1列跨度=1D 1和D＆下; / TD＆GT;
＆所述; TD行跨度=1列跨度=1大于0＆下; / TD＆GT;
＆所述; TD行跨度=1列跨度=1大于0＆下; / TD＆GT;
＆所述; TD行跨度=1列跨度=1大于0＆下; / TD＆GT;
[...]
 

我感兴趣的是具有玩家ID，它是： 8475179 这里是code我到目前为止有：

  //迭代所有行（玩家）
        的for（int i = 1; I＆LT; rows.Count ++ I）
        {
            HtmlNodeCollection COLS =行[I] .SelectNodes（.// TD）;            //新的球员
            Dim_Player球员=新Dim_Player（）;                //遍历此行中的所有列
                为（诠释J = 1; J＆10 6 ++ j）条
                {
                    开关（J）{
                        案例1：player.Name = COLS [J] .InnerText;
                                player.Player_id = Int32.Parse（/ *这就是我想要解析href值* /）;
                                打破;
                        案例2：player.Position = COLS [J] .InnerText;打破;
                        案例3：stats.Goals = Int32.Parse（COLS [J] .InnerText）;打破;
                        案例4：stats.Assists = Int32.Parse（COLS [J] .InnerText）;打破;
                        案例5：stats.Points = Int32.Parse（COLS [J] .InnerText）;打破;
                    }
                }
 

解决方案

根据你的榜样，这个工作对我来说：

 的HTMLDocument HTMLDOC =新的HTMLDocument（）;
htmlDoc.Load（test.html的）;
VAR链接= htmlDoc.DocumentNode
                  .Descendants（一）
                  。首先（X =＆GT;！x.Attributes [下课] = NULL
                           ＆功放;＆安培; 。x.Attributes [类]值==undMe）;。字符串hrefValue = link.Attributes [HREF]值;
长playerId = Convert.ToInt64（hrefValue.Split（=）[1]）;
 

有关实际使用​​需要添加错误检查等。

How would I effectively parse the href attribute value from this :

<tr>
<td rowspan="1" colspan="1">7</td>
<td rowspan="1" colspan="1">
<a class="undMe" href="/ice/player.htm?id=8475179" rel="skaterLinkData" shape="rect">D. Kulikov</a>
</td>
<td rowspan="1" colspan="1">D</td>
<td rowspan="1" colspan="1">0</td>
<td rowspan="1" colspan="1">0</td>
<td rowspan="1" colspan="1">0</td>
[...]

I am interested in having the player id, which is: 8475179 Here is the code I have so far:

        // Iterate all rows (players)
        for (int i = 1; i < rows.Count; ++i)
        {
            HtmlNodeCollection cols = rows[i].SelectNodes(".//td");

            // new player
            Dim_Player player = new Dim_Player();

                // Iterate all columns in this row
                for (int j = 1; j < 6; ++j)
                {
                    switch (j) {
                        case 1: player.Name = cols[j].InnerText;
                                player.Player_id = Int32.Parse(/* this is where I want to parse the href value */); 
                                break;
                        case 2: player.Position = cols[j].InnerText; break;
                        case 3: stats.Goals = Int32.Parse(cols[j].InnerText); break;
                        case 4: stats.Assists = Int32.Parse(cols[j].InnerText); break;
                        case 5: stats.Points = Int32.Parse(cols[j].InnerText); break;
                    }
                }

解决方案

Based on your example this worked for me:

HtmlDocument htmlDoc = new HtmlDocument();
htmlDoc.Load("test.html");
var link = htmlDoc.DocumentNode
                  .Descendants("a")
                  .First(x => x.Attributes["class"] != null 
                           && x.Attributes["class"].Value == "undMe");

string hrefValue = link.Attributes["href"].Value;
long playerId = Convert.ToInt64(hrefValue.Split('=')[1]);

For real use you need to add error checking etc.

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