Question

我关注了html代码：

<tr>
    <td headers="header1"><b><a href="www.site.com">TITLE </a></b></td>
    <td headers="header2"></td>
    <td headers="header3" class="centrato">23/04/2014</td>
</tr>

我需要存储在数据表中：

HREF VALUE in "Link" column;
TITLE in "Title" column;
23/04/2014 in "Date" column;

我试过了：

int i = 0;
foreach (HtmlNode node in tmlDoc.DocumentNode.SelectNodes("//td[@headers='header1']"))
{
  table.Rows.Add();
  table.Rows[i]["Post"] = node.InnerText;
  i++;
 }

此代码允许我在数据表中添加所有标题但我无法添加DATE和HREF，您能帮我吗？

Answer 1

你可以这样做：

//select all `<tr>` that contains specific `<td>`
foreach (HtmlNode node in tmlDoc.DocumentNode.SelectNodes("//tr[td[@headers='header1']]"))
{
    table.Rows.Add();
    //get <td headers='header1'> in current <tr>
    var header1 = node.SelectSingleNode("./td[@headers='header1']");

    table.Rows[i]["Title"] = header1.InnerText;
    //get <a> in header1 then get it's href attribute value
    table.Rows[i]["Link"] = header1.SelectSingleNode(".//a").GetAttributeValue("href", "");
    //get innerText of <td headers='header1'> in current <tr>
    table.Rows[i]["Post"] = node.SelectSingleNode("./td[@headers='header3']").InnerText;
    i++;
}

Answer 2

InnerText 只是为您提供标记之间的文字。要访问Href或Id或......您应该使用GetAttributeValue方法。

int i = 0;
foreach (HtmlNode node in tmlDoc.DocumentNode.SelectNodes("//tr"))
{
    table.Rows.Add();
    table.Rows[i]["Link"] = node.SelectSingleNode("//a").GetAttributeValue("href", "");
    table.Rows[i]["Title"] = node.SelectSingleNode("//a").InnerText;
    table.Rows[i]["Date"] = node.SelectSingleNode("//td[@headers='header3']").InnerText;
    i++;
}

HTML Agility Pack：如何访问HTML属性？

2 个答案: