如何在c#中解析HTMLDocument?

时间:2010-07-22 07:52:45

标签: c# asp.net html-agility-pack

我想在c#中使用简单的应用程序获取html页面的文本? 如果有嵌套元素 即,

<Table>
    <TR>
        <TD>**ABC**
        </TD>
        <TD>**1**
        </TD>
   </TR>
   <TR>
        <TD>**XYZ**
        </TD>
        <TD>**2**
        </TD>
   </TR>
</Table>

如何直接获取文本(粗体)值。我想将它们保存在我的数据库中,还想在gridview中显示?

 HtmlDocument htmlSnippet = new HtmlDocument();
 htmlSnippet = LoadHtmlSnippetFromFile();

 private HtmlDocument LoadHtmlSnippetFromFile()
 {
     //TextReader reader = File.OpenText(Server.MapPath("~/App_Data/HtmlSnippet.txt"));

     WebClient webClient = new WebClient();
     const string strUrl = "http://www.dsebd.org/latest_PE_all2_08.php";

     Stream reader = webClient.OpenRead(strUrl);

     HtmlDocument doc = new HtmlDocument();
     doc.Load(reader);

     reader.Close();

     return doc;
}

htmlSnippet我怎样才能获得价值?

1 个答案:

答案 0 :(得分:1)

我不确定,你需要什么......根据你的例子,你想要一个字符串"**ABC****1****XYZ****2**"吗?

然后这应该有效:htmlSnippet.Body.OuterText

编辑:好的,尝试单独值的示例......

HtmlElement tableElement = FindElement(HtmlDocument.Body, "table");
foreach(HtmlElement row in tableElement.Children)
{
    if (row.Name.ToLower() == "tr")
    {
        // create whatever class you use for a row
        foreach(HtmlElement cell in row.Children)
        {
            if (cell.Name.ToLower() == "td")
            {
                // add a new cell to your row using cell.InnerText
            }
        }
    }
}

// *** snip ***

private HtmlElement FindElement(HtmlElement element, string name)
{
    if (element.Name.ToLower() == name)
    {
        return element;
    }
    foreach(HtmlElement child in element.Children)
    {
        HtmlElement test = FindElement(test, name);
        if (test != null)
        {
            return test;
        }
    }
    return null;
}

抱歉,我现在没有Visual Studio来测试代码......祝你好运; - )