将HTML代码与字符串模式匹配? [英] Match html code with string pattern?

问题描述

你好，

如何用"string pattern =匹配HTML代码?

Hello,

How to match html code with "string pattern="?

string url = "http://nbt.tj/ru/kurs/?c=4&id=28&lg=ru&d=";

string pattern = "<td width="180" id="k_kurs">1 USD                    4.7543</td>";
    
Match match = Regex.Match(html, pattern);
label2.Content = match.Groups[0].ToString();

谢谢.

Thank you.

推荐答案

使用WebClient.DownloadString从相应的URL下载HTML.

请查看下面的链接，以获取有关WebClient.DownloadString的更多信息.

http://msdn.microsoft.com/en-us/library/fhd1f0sw％28v = VS.100％29.aspx

这是几个有关" Regex "的信息的链接.
http://msdn.microsoft.com/en-us/library/system. text.regularexpressions.regex.aspx

30分钟正则表达式教程

Use WebClient.DownloadString to download HTML from corresponding url.

Have a look at below link for more information on WebClient.DownloadString.

http://msdn.microsoft.com/en-us/library/fhd1f0sw%28v=VS.100%29.aspx

Here are couple of links for information on "Regex".
http://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex.aspx

The 30 Minute Regex Tutorial

你好，
感谢您提供非常有用的文档链接.

Hello,
Thank you for links very useful documentations.

string remoteUri = "http://nbt.tj/ru/";
string pattern = "\bid\D\Dk_kurs\D\D1\sUSD\s\s\s\s\s\s\s\s\s4.\d\d\d\d\D\Dtd\D"; 

    WebClient client = new WebClient();
    Console.WriteLine("Downloading {0}", remoteUri);
    string str = client.DownloadString(remoteUri);

  Match match = Regex.Match(str, pattern);
  MessageBox.Show(match.Groups[0].ToString());

运行此脚本时，系统显示错误无法识别的转义序列".
您能给我写出正确的解决方法吗?我要符合以下条件:

When I run this script the system show me the error "Unrecognized escape sequence".
Can you write me the correct way to fix it? I want to match the following:

id="k_kurs">1 USD &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4.7554</td>

字符串模式= @"\ bid \ D \ Dk_kurs \ D \ D1 \ sUSD(.*)(\ d.\ d \ d \ d \ d)\ D \ Dtd \ D;

string pattern = @"\bid\D\Dk_kurs\D\D1\sUSD(.*)(\d.\d\d\d\d)\D\Dtd\D";

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