有没有办法在C#中获取捕获组的名称?
string line = "No.123456789 04/09/2009 999";
Regex regex = new Regex(@"(?<number>[\d]{9}) (?<date>[\d]{2}/[\d]{2}/[\d]{4}) (?<code>.*)");
GroupCollection groups = regex.Match(line).Groups;
foreach (Group group in groups)
{
Console.WriteLine("Group: {0}, Value: {1}", ???, group.Value);
}
我想得到这个结果:
Group: [I don´t know what should go here], Value: 123456789 04/09/2009 999
Group: number, Value: 123456789
Group: date, Value: 04/09/2009
Group: code, Value: 999
发布于 2018-03-22 15:40:01
使用以下扩展方法:
public static class MyExtensionMethods
{
public static Dictionary<string, string> MatchNamedCaptures(this Regex regex, string input)
{
var namedCaptureDictionary = new Dictionary<string, string>();
GroupCollection groups = regex.Match(input).Groups;
string [] groupNames = regex.GetGroupNames();
foreach (string groupName in groupNames)
if (groups[groupName].Captures.Count > 0)
namedCaptureDictionary.Add(groupName,groups[groupName].Value);
return namedCaptureDictionary;
}
}
一旦这个扩展方法就位,你就可以获得如下的名称和值:
var regex = new Regex(@"(?<year>[\d]+)\|(?<month>[\d]+)\|(?<day>[\d]+)");
var namedCaptures = regex.MatchNamedCaptures(wikiDate);
string s = "";
foreach (var item in namedCaptures)
{
s += item.Key + ": " + item.Value + "\r\n";
}
s += namedCaptures["year"];
s += namedCaptures["month"];
s += namedCaptures["day"];
https://stackoverflow.com/questions/-100007733
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