Regex.Replace: How to use $groups followed by numbers [duplicate]

Question

With Regex::Replace we can use $1, $2, ... to match corresponding groups. But how can I use $1 followed by number. E.g. to replace 6 with 678?

 Regex::Replace(text, "(6)", '$178');

Jeff Moser · Accepted Answer · 2009-05-01 12:17:44Z

51

You need to use the alternate syntax:

Regex::Replace(text, "(6)", "${1}78");

answered May 1, 2009 at 12:17

Jeff Moser

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Comments

alex2k8 · Accepted Answer · 2009-05-01 12:17:33Z

3

It seems I can use $`

Regex::Replace(text, "(6)", '$1$`78');

answered May 1, 2009 at 12:17

alex2k8

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Jason Irwin · Accepted Answer · 2009-05-01 12:17:47Z

1

You can use backreferences to capture a named group and replace that named group with whatever you want. view this link

answered May 1, 2009 at 12:17

Jason Irwin

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It would be nice to add an example. The documentation you point at is quite bulky.