How to remove a pattern from a string using Regex

Question

I want to find paths from a string and remove them, e.g.:

string1 = "'c:\a\b\c'!MyUDF(param1, param2,..) + 'c:\a\b\c'!MyUDF(param3, param4,..)..."`

I'd like a regex to find the pattern '[some path]'!MyUDF, and remove '[path]'.

Thanks.

Edit:

Example input:

string1 = "'c:\a\b\c'!MyUDF(param1, param2,..) + 'c:\a\b\c'!MyUDF(param3, param4,..)";

Expected output: "MyUDF(param1, param2,...) + MyUDF(param3, param4,...)" where MyUDF is a function name, so it consists of only letters

Please explain your input and expected output with more details. — Yosi Dahari
– Yosi Dahari, Commented Oct 24, 2013 at 17:23

Anirudha · Accepted Answer · 2013-10-24 17:24:22Z

35

input=Regex.Replace(input,"'[^']+'(?=!MyUDF)","");

In case if the path is followed by ! and some other word you can use

input=Regex.Replace(input,@"'[^']+'(?=!\w+)","");

answered Oct 24, 2013 at 17:24

Anirudha

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3 Comments

Mike Perrenoud Over a year ago

Though I wouldn't bet my life on it, since this question is so poorly asked, I believe MyUDF could be any string.

Anirudha Over a year ago

@neoistheone indeed..edited the ans..Though op should come clear on this

toosensitive Over a year ago

Sorry about it. MyUDF is simply a function name, so only has letters. thanks

Mike Perrenoud · Accepted Answer · 2013-10-24 17:24:34Z

2

Alright, if the ! is always in the string as you suggest, this Regex !(.*)?\( will get you what you want. Here is a Regex 101 to prove it.

To use it, you might do something like this:

var result = Regex.Replace(myString, @"!(.*)?\(");

answered Oct 24, 2013 at 17:24

Mike Perrenoud

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Comments

Magus · Accepted Answer · 2013-10-24 17:22:46Z

-1

The feature you want, if you are dealing with file paths, is in System.Path.

There are many methods there, but that is one of it's specific purposes.

answered Oct 24, 2013 at 17:22

Magus

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