Question

I am trying to replace the values in a string at run time based on the contents within a set of braces.

// this.LinkUrl = "/accounts/{accountId}"
this.LinkUrl = Regex.Replace(account.Company.LinkUrl, @"\{(.*?)\}", "$1");
// this.LinkUrl = "/accounts/accountId"

So far it works as expected and removes the braces. But how can I pass the $1 value into a function, like so

this.LinkUrl = Regex.Replace(account.Company.LinkUrl, @"\{(.*?)\}", this.GetValueForFieldNamed("$1"));

So that “accountid” is replaced with the value the function returns? e.g. “/accounts/56”

Answer 1

You can pass a delegate to the Regex.Replace method that takes a Match and returns a string, e.g. define the function for replacement:

string GetValueForFieldNamed(Match m){
    string res = m.Groups[1].Value;
    //do stuff with res
    return res;
}

and then call it like this:

LinkUrl = Regex.Replace(account.Company.LinkUrl, @"\{(.*?)\}", GetValueForFieldNamed);