使用C#中的match提取两个字符串定界符之间的字符串内容 [英] Extract the contents of a string between two string delimiters using match in C#
问题描述
因此，假设我正在解析以下HTML字符串:
So, say I'm parsing the following HTML string:
<html>
<head>
RANDOM JAVASCRIPT AND CSS AHHHHHH!!!!!!!!
</head>
<body>
<table class="table">
<tr><a href="/subdir/members/Name">Name</a></tr>
<tr><a href="/subdir/members/Name">Name</a></tr>
<tr><a href="/subdir/members/Name">Name</a></tr>
<tr><a href="/subdir/members/Name">Name</a></tr>
<tr><a href="/subdir/members/Name">Name</a></tr>
<tr><a href="/subdir/members/Name">Name</a></tr>
<tr><a href="/subdir/members/Name">Name</a></tr>
<tr><a href="/subdir/members/Name">Name</a></tr>
<tr><a href="/subdir/members/Name">Name</a></tr>
<tr><a href="/subdir/members/Name">Name</a></tr>
</table>
<body>
</html>
，我想隔离 ** 的内容(表类中的所有内容)
and I want to isolate the contents of ** (everything inside of the table class)
现在，我使用正则表达式来完成此操作:
Now, I used regex to accomplish this:
string pagesource = (method that extracts the html source and stores it into a string);
string[] splitSource = Regex.Split(pagesource, "<table class=/"member/">;
string memberList = Regex.Split(splitSource[1], "</table>");
//the list of table members will be in memberList[0];
//method to extract links from the table
ExtractLinks(memberList[0]);
我一直在寻找进行此提取的其他方法，并且遇到了C#中的Match对象.
I've been looking at other ways to do this extraction, and I came across the Match object in C#.
我正在尝试做这样的事情:
I'm attempting to do something like this:
Match match = Regex.Match(pageSource, "<table class=\"members\">(.|\n)*?</table>");
上面的目的是希望提取两个定界符之间的匹配值，但是，当我尝试运行它时，匹配值是:
The purpose of the above was to hopefully extract a match value between the two delimiters, but, when I try to run it the match value is:
match.value = </table>
如此，我的问题是:有没有一种方法可以比我使用正则表达式的方法更容易/更易读/更短地从我的字符串中提取数据?对于这个简单的示例，正则表达式很好，但对于更复杂的示例，我发现自己在屏幕上的编码方式都像是涂鸦.
MY question, as such, is: is there a way to extract data from my string that is slightly easier/more readable/shorter than my method using regex? For this simple example, regex is fine, but for more complex examples, I find myself with the coding equivalent of scribbles all over my screen.
我真的很想使用match，因为它看起来很整洁，但是我似乎无法让它满足我的需要.有人可以帮我吗?
I would really like to use match, because it seems like a very neat and tidy class, but I can't seem to get it working for my needs. Can anyone help me with this?
非常感谢！
推荐答案
使用HTML解析器，例如 HTML Agility Pack .
Use an HTML parser, like HTML Agility Pack.
var doc = new HtmlDocument();
using (var wc = new WebClient())
using (var stream = wc.OpenRead(url))
{
doc.Load(stream);
}
var table = doc.DocumentElement.Element("html").Element("body").Element("table");
string tableHtml = table.OuterHtml;
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