Replace string, with regEx match

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i wish to make a capture using RegEx
following pattern:

C#

string pattern = @"/[a-z]{2}/products/\d{4}/\(?<fileName>[abc])\.aspx";

C#

string inputString = longString(around 3000 characters);

but i need to utilise this capture to pass into a constructor

C#

Object obj = new Obj(capture)

in order to load the object and retrieve a property (guid) of that object, obviously this guid will be different for every match.

i need to do this for every match on the regEx pattern, and then replace input string with

C#

"info.aspx?number" + guid;

and then return the input string with all replacements done.

Posted 25-Nov-14 4:58am

Grant Weatherston

Updated 25-Nov-14 5:00am

v2

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OriginalGriff · Accepted Answer · 2014-11-25T05:28:00

Solution 1

Regex.Replace has an overload that takes a match evaluator method:

C#

string output = Regex.Replace(input, pattern, ReplaceMethod);

    }
private string ReplaceMethod(Match m)
    {
    MyObject obj = new MyObject(m.Value);
    return "info.aspx?number" + obj.Guid.ToString();
    }

Posted 25-Nov-14 5:28am

OriginalGriff

Comments

Grant Weatherston 25-Nov-14 11:58am

thanks alot, don't know how i'm going to pass the language into the delegate though :/

OriginalGriff 25-Nov-14 12:09pm

No, a MatchEvaluator method can only take one parameter - but surely it can pick up the language from the class? It can't change between matches in the same input string, can it?