String.Split cut separator

Question

Is it possible to use String.Split without cutting separator from string?

For example I have string

convertSource = "http://www.domain.com http://www.domain1.com";

I want to build array and use code below

convertSource.Split(new[] { " http" }, StringSplitOptions.RemoveEmptyEntries)

I get such array

[1] http://www.domain.com
[2] ://www.domain1.com

I would like to keep http, it seems String.Split not only separate string but also cut off separator.

but you should split by space " " not by http, does it help? — Davide Piras, Dec 16 '11 at 13:17
What if the URL contains 'http' in itself? Like `http://www.http.com/`. You should first define clear rules that restrict what can be your input. — Ondrej Tucny, Dec 16 '11 at 13:19
@DavidePiras I can't split by space because URL may contain spaces. — Tomas, Dec 16 '11 at 13:21
also anyway, possible duplicate of this one: http://stackoverflow.com/questions/521146/c-sharp-split-string-but-keep-split-chars-separators — Davide Piras, Dec 16 '11 at 13:21

score 4 · Accepted Answer · answered Dec 16 '11 at 13:34

This is screaming for Regular Expressions:

Regex regEx = new Regex(@"((mailto\:|(news|(ht|f)tp(s?))\://){1}\S+)");
Match match= regEx.Match("http://www.domain.com http://www.domain1.com");

IList<string> values = new List<string>();
while (match.Success)
{
     values.Add(match.Value);
     match = match.NextMatch();
}

score 3 · Answer 2 · answered Dec 16 '11 at 13:46

3

string[] array = Regex.Split(convertSource, @"(?=http://)");

answered Dec 16 '11 at 13:46

Sinan AKYAZICI

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score 1 · Answer 3 · edited May 23 '17 at 11:55

1

That's because you use " http" as separator.

Try this:

string separator = " ";
convertSource.Split(separator.ToCharArray(), StringSplitOptions.RemoveEmptyEntries)

The Split method works in a way that when it comes to the separator you provide it cuts it off right there and removes the separator from the string also.

From what you are saying you want to do there are other ways to split the string keeping the delimiters and then if you only want to remove leading or trailing spaces from your string then I wouuld suggest that you use .Trim() method: convertSource.Trim()

edited May 23 '17 at 11:55

Community

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answered Dec 16 '11 at 13:18

TheBoyan

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instead of new[] { " " } I think you can use ' ' – Davide Piras Dec 16 '11 at 13:20
I can't split by space because URL may contain spaces – Tomas Dec 16 '11 at 13:24
1

@DavidePiras you must include new[] { " " } because using only " " will give you compile error. No such method found... – Tomas Dec 16 '11 at 13:26
Could you force the URLs to be encoded (e.g. use %20 instead of space)? – Strillo Dec 16 '11 at 13:27
Yes. Encode using HttpUtility.UrlPathEncode() and then split with ''. – Mohan Kumar Dec 16 '11 at 13:34

String.Split cut separator

3 Answers3