使用C＃通过div中的内容获取div类
[英]get div class by content inside div using C#
问题描述
I need to identify the class of a div element which contains some text. 
我需要确定包含一些文本的div元素的类。 For example I have this HTML page 例如我有这个HTML页面
<html>
...
<div class='x'>
<p>this is the text I have.</p>
<p>Another part of text.</p>
</div>
...
</html>
So I know the text this is the text I have. Another part of text. 所以我知道this is the text I have. Another part of text. this is the text I have. Another part of text. And I need to identify the div class name. 而且我需要确定div类的名称。 Is there an way to do this using C#? 有没有办法使用C＃做到这一点？
2 个解决方案
解决方案1
3 2016-05-17 09:19:24
Try this: 尝试这个：
string stringToSearch = "<p>this is the text I have.</p><p>Another part of text.</p>";
HtmlDocument document = new HtmlDocument();
document.LoadHtml(sb.ToString());
var classOfDiv = document.DocumentNode.Descendants("div").Select(x => new
{
ClassOfDiv = x.Attributes["class"].Value
}).Where(x => x.InnerHtml = stringToSearch);
The variable classOfDiv now contains the class name of the desired div . 变量classOfDiv现在包含所需div的class名称。
解决方案2
3 已采纳 2016-05-17 09:44:43
Building on the answer of diiN_. 建立在diiN_的答案上。 This is a bit verbose but you should be able to get what you need from it. 这有点冗长，但是您应该能够从中获得所需的东西。 The code depends on the HTML Agility Pack . 该代码取决于HTML Agility Pack 。 You can get it using nuget. 您可以使用nuget获取它。
var sb = new StringBuilder();
sb.AppendFormat("<html>");
sb.AppendFormat("<div class='x'>");
sb.AppendFormat("<p>this is the text I have.</p>");
sb.AppendFormat("<p>Another part of text.</p>");
sb.AppendFormat("</div>");
sb.AppendFormat("</html>");
const string stringToSearch = "<p>this is the text I have.</p><p>Another part of text.</p>";
var document = new HtmlDocument();
document.LoadHtml(sb.ToString());
var divsWithText = document
.DocumentNode
.Descendants("div")
.Where(node => node.Descendants()
.Any(des => des.NodeType == HtmlNodeType.Text))
.ToList();
var divsWithInnerHtmlMatching =
divsWithText
.Where(div => div.InnerHtml.Equals(stringToSearch))
.ToList();
var innerHtmlAndClass =
divsWithInnerHtmlMatching
.Select(div =>
new
{
InnerHtml = div.InnerHtml,
Class = div.Attributes["class"].Value
});
foreach (var item in innerHtmlAndClass)
{
Console.WriteLine("class='{0}' innerHtml='{1}'", item.Class, item.InnerHtml);
}
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