[英]What is the C# equivalent of java.util.regex?
I am converting Java code to C# and need to replace the use of Java's regex. 我正在将Java代码转换为C#,需要替换使用Java的正则表达式。 A typical use is
典型的用途是
import java.util.regex.Matcher;
import java.util.regex.Pattern;
//...
String myString = "B12";
Pattern pattern = Pattern.compile("[A-Za-z](\\d+)");
Matcher matcher = Pattern.matcher(myString);
String serial = (matcher.matches()) ? matcher.group(1) : null;
which should extract a capture group from a matched target string. 应该从匹配的目标字符串中提取捕获组。 I'd be grateful for simple examples.
我会很感激简单的例子。
EDIT : I have now added the C# equivalent of the code as an answer. 编辑 :我现在已经添加了代码的C#等价物作为答案。
EDIT : Here is a tutorial on the use of the actual expressions. 编辑 : 这是一个关于使用实际表达式的教程 。
EDIT : Here is a useful comparison of C# and Java (and Perl.) 编辑 : 这是 C#和Java(和Perl。) 的有用比较 。
System.Text.RegularExpressions.Regex
class is the .NET Framework equivalent. System.Text.RegularExpressions.Regex
类是.NET Framework的等价物。 The MSDN page I linked to contains a simple example. 我链接到的MSDN页面包含一个简单的示例。
I created the C# equivalent of the Java code in the question as: 我在问题中创建了C#等效的Java代码:
string myString = "B12";
Regex rx = new Regex(@"[A-Za-z](\\d+)");
MatchCollection matches = rx.Matches(myString);
if (matches.Count > 0)
{
Match match = matches[0]; // only one match in this case
GroupCollection groupCollection = match.Groups;
Console.WriteLine("serial " + groupCollection[1].ToString());
}
EDIT (See @Mehrdad's helpful comments) 编辑 (参见@ Mehrdad的有用评论)
The original code was: 原始代码是:
// ...
MatchCollection matches = rx.Matches(myString);
foreach (Match match in matches)
{
GroupCollection groupCollection = match.Groups;
Console.WriteLine("serial " + groupCollection[1].ToString());
}
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