CODEWITHSUNDEEP
c#regex
Nam G VU
Nam G VU

Reputation: 35374

Regular Expression to get all matched position

Let's take this code snippet

var input = @"
a:1
b:22

a:3
b:44
";

var pattern = @"b:([^\n]+)\n";
var match = Regex.Match(input, pattern);

And the result I get in match is at the below snapshot.

How can we get the list of values of b e.g. {22, 44}?

I can only see the 22.

enter image description here

Upvotes: 3

Views: 106

Answers (3)

Szymon
Szymon

Reputation: 43023

Instead of Match, use Matches method to get multiple matches in one go:

var matches = Regex.Matches(input, pattern);

for (int i = 0; i < matches.Count; i++ )
{
    var value = matches[i].Value;
}

or using foreach syntax:

foreach (Match match in matches)
{
    var value = match.Value;
}

Upvotes: 6

meziantou
meziantou

Reputation: 21337

Use Regex.Matches method instead of Regex.Match. Here's an example from MSDN

string pattern = "a*";
string input = "abaabb";

foreach (Match m in Regex.Matches(input, pattern)) 
   Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);

if you want a list of matched values

Regex.Matches(input, pattern).Select(m => m.Value).ToList();

Upvotes: 5

Max
Max

Reputation: 13338

Returns a new Match object with the results for the next match, starting at the position at which the last match ended (at the character after the last matched character).

Match.NextMatch

What could be even easier, is to just loop through all Matches.

Upvotes: 2

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