我有以下大量的HTML代码,但我不知道如何获得指定值
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
</head>
<body >
<form name="form1" method="post" action="" id="form1">
<div>
<table class="tableclass" >
<tbody>
<tr>
<tr>
<td colspan="5" class="myclass1"><span id="myclass2">value1</span></td>
</tr>
<tr id="idvalue" aa="1" class="myclass3a">
<td><a href="" target="_blank">value2</a></td>
<td>value3</td>
<td>value4</td>
<td>value5</td>
<td>value6</td>
</tr>
<tr id="idvalue" aa="2" class="myclass3b">
<td><a href="" target="_blank">value2</a></td>
<td>value3</td>
<td>value4</td>
<td>value5</td>
<td>value6</td>
</tr>
<tr id="idvalue" aa="3" class="myclass3c">
<td><a href="" target="_blank">value2</a></td>
<td>value3</td>
<td>value4</td>
<td>value5</td>
<td>value6</td>
</tr>
</tbody>
</table>
</div>
</form>
</body>
</html>
让我分析一下这段代码。
该页面有一个表格,第一行的格式略有不同,我希望提取 value1 ,其余各行都有各种类和不同的id值。从每一行到表格的结尾我想提取 value2 , value3 , value4 , value5
感谢您的时间
答案 0 :(得分:1)
以下......
var document = new HtmlDocument();
...
var nodes = document.DocumentNode.Descendants("td");
foreach(var node in nodes)
{
Console.WriteLine(node.InnerText);
}
...可生产
value1
value2
value3
value4
value5
value6
value2
value3
value4
value5
value6
value2
value3
value4
value5
value6
希望这就是你所追求的目标。
答案 1 :(得分:1)
var doc = new HtmlDocument();
doc.Load(url);
var table = doc.DocumentNode.SelectSingleNode("//table[@class='tableclass']");
var value1 = table.Descendants("tr").Skip(1)
.Select(tr => tr.InnerText.Trim())
.First();
var theRest =
from tr in table.Descendants("tr").Skip(2)
let values = tr.Elements("td")
.Select(td => td.InnerText.Trim())
.ToList()
select new
{
Value2 = values[0],
Value3 = values[1],
Value4 = values[2],
Value5 = values[3],
Value6 = values[4],
};