Regex to find URL works on Regex101.com but not in C# code
-2
I have this regex pattern to match website:
^(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$
If I test it (http://www.regex101.com) with the following values:
http://www.google.com
google.com
somesite.com
I get a match on all three values.
But this code doesn't work in C# (no matches):
var websiteRegex = new Regex(@"^(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$", RegexOptions.IgnoreCase);
var stripped = stripped = phoneRegex
.Replace("http://www.google.com www.google.com somesite.com", string.Empty);
c# regex
edited Nov 15 '18 at 20:34
Poul Bak
5,48831233
asked Nov 14 '18 at 23:06
Ian TunbridgeIan Tunbridge
529
|
show 1 more comment
-2
I have this regex pattern to match website:
^(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$
If I test it (http://www.regex101.com) with the following values:
http://www.google.com
google.com
somesite.com
I get a match on all three values.
But this code doesn't work in C# (no matches):
var websiteRegex = new Regex(@"^(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$", RegexOptions.IgnoreCase);
var stripped = stripped = phoneRegex
.Replace("http://www.google.com www.google.com somesite.com", string.Empty);
c# regex
edited Nov 15 '18 at 20:34
Poul Bak
5,48831233
asked Nov 14 '18 at 23:06
Ian TunbridgeIan Tunbridge
529
How are you declaringWEBSITE_PATTERN?
– greenjaed
Nov 14 '18 at 23:09
private readonly string WEBSITE_PATTERN = @"^(?i)(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$";
– Ian Tunbridge
Nov 14 '18 at 23:09
1
Ahem, it cannot match the string"http://www.google.com www.google.com somesite.com"because you use the^and$anchors...
– elgonzo
Nov 14 '18 at 23:11
1
Thanks @elgonzo I wasn't sure what those did. I was just borrowing the pattern from someone else's example. Both your comment and Poul Bak's answer were correct!
– Ian Tunbridge
Nov 14 '18 at 23:18
The thing is your pattern matches the whole string that is a URL. If you tested against"http://www.google.comnwww.google.comnsomesite.com", why do you think it will work the same against"http://www.google.com www.google.com somesite.com"?
– Wiktor Stribiżew
Nov 14 '18 at 23:23
|
show 1 more comment
-2
-2
-2
I have this regex pattern to match website:
^(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$
If I test it (http://www.regex101.com) with the following values:
http://www.google.com
google.com
somesite.com
I get a match on all three values.
But this code doesn't work in C# (no matches):
var websiteRegex = new Regex(@"^(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$", RegexOptions.IgnoreCase);
var stripped = stripped = phoneRegex
.Replace("http://www.google.com www.google.com somesite.com", string.Empty);
c# regex
edited Nov 15 '18 at 20:34
Poul Bak
5,48831233
asked Nov 14 '18 at 23:06
Ian TunbridgeIan Tunbridge
529
I have this regex pattern to match website:
^(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$
If I test it (http://www.regex101.com) with the following values:
http://www.google.com
google.com
somesite.com
I get a match on all three values.
But this code doesn't work in C# (no matches):
var websiteRegex = new Regex(@"^(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$", RegexOptions.IgnoreCase);
var stripped = stripped = phoneRegex
.Replace("http://www.google.com www.google.com somesite.com", string.Empty);
c# regex
c# regex
edited Nov 15 '18 at 20:34
Poul Bak
5,48831233
asked Nov 14 '18 at 23:06
Ian TunbridgeIan Tunbridge
529
edited Nov 15 '18 at 20:34
Poul Bak
5,48831233
asked Nov 14 '18 at 23:06
Ian TunbridgeIan Tunbridge
529
edited Nov 15 '18 at 20:34
Poul Bak
5,48831233
edited Nov 15 '18 at 20:34
Poul Bak
5,48831233
edited Nov 15 '18 at 20:34
Poul Bak
5,48831233
5,48831233
asked Nov 14 '18 at 23:06
Ian TunbridgeIan Tunbridge
529
asked Nov 14 '18 at 23:06
Ian TunbridgeIan Tunbridge
529
asked Nov 14 '18 at 23:06
Ian TunbridgeIan Tunbridge
529
529
How are you declaringWEBSITE_PATTERN?
– greenjaed
Nov 14 '18 at 23:09
private readonly string WEBSITE_PATTERN = @"^(?i)(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$";
– Ian Tunbridge
Nov 14 '18 at 23:09
1
Ahem, it cannot match the string"http://www.google.com www.google.com somesite.com"because you use the^and$anchors...
– elgonzo
Nov 14 '18 at 23:11
1
Thanks @elgonzo I wasn't sure what those did. I was just borrowing the pattern from someone else's example. Both your comment and Poul Bak's answer were correct!
– Ian Tunbridge
Nov 14 '18 at 23:18
The thing is your pattern matches the whole string that is a URL. If you tested against"http://www.google.comnwww.google.comnsomesite.com", why do you think it will work the same against"http://www.google.com www.google.com somesite.com"?
– Wiktor Stribiżew
Nov 14 '18 at 23:23
|
show 1 more comment
How are you declaringWEBSITE_PATTERN?
– greenjaed
Nov 14 '18 at 23:09
private readonly string WEBSITE_PATTERN = @"^(?i)(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$";
– Ian Tunbridge
Nov 14 '18 at 23:09
1
Ahem, it cannot match the string"http://www.google.com www.google.com somesite.com"because you use the^and$anchors...
– elgonzo
Nov 14 '18 at 23:11
1
Thanks @elgonzo I wasn't sure what those did. I was just borrowing the pattern from someone else's example. Both your comment and Poul Bak's answer were correct!
– Ian Tunbridge
Nov 14 '18 at 23:18
The thing is your pattern matches the whole string that is a URL. If you tested against"http://www.google.comnwww.google.comnsomesite.com", why do you think it will work the same against"http://www.google.com www.google.com somesite.com"?
– Wiktor Stribiżew
Nov 14 '18 at 23:23
How are you declaring
WEBSITE_PATTERN?– greenjaed
Nov 14 '18 at 23:09
How are you declaring
WEBSITE_PATTERN?– greenjaed
Nov 14 '18 at 23:09
private readonly string WEBSITE_PATTERN = @"^(?i)(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$";
– Ian Tunbridge
Nov 14 '18 at 23:09
private readonly string WEBSITE_PATTERN = @"^(?i)(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$";
– Ian Tunbridge
Nov 14 '18 at 23:09
1
1
Ahem, it cannot match the string
"http://www.google.com www.google.com somesite.com" because you use the ^ and $ anchors...– elgonzo
Nov 14 '18 at 23:11
Ahem, it cannot match the string
"http://www.google.com www.google.com somesite.com" because you use the ^ and $ anchors...– elgonzo
Nov 14 '18 at 23:11
1
1
Thanks @elgonzo I wasn't sure what those did. I was just borrowing the pattern from someone else's example. Both your comment and Poul Bak's answer were correct!
– Ian Tunbridge
Nov 14 '18 at 23:18
Thanks @elgonzo I wasn't sure what those did. I was just borrowing the pattern from someone else's example. Both your comment and Poul Bak's answer were correct!
– Ian Tunbridge
Nov 14 '18 at 23:18
The thing is your pattern matches the whole string that is a URL. If you tested against
"http://www.google.comnwww.google.comnsomesite.com", why do you think it will work the same against "http://www.google.com www.google.com somesite.com"?– Wiktor Stribiżew
Nov 14 '18 at 23:23
The thing is your pattern matches the whole string that is a URL. If you tested against
"http://www.google.comnwww.google.comnsomesite.com", why do you think it will work the same against "http://www.google.com www.google.com somesite.com"?– Wiktor Stribiżew
Nov 14 '18 at 23:23
|
show 1 more comment
1 Answer
1
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0
The reason is simple: regex101.com automatically apply the 'MultiLine' option, which is necessary in your case.
Your code should be:
var websiteRegex = new Regex(WEBSITE_PATTERN, RegexOptions.IgnoreCase | RegexOptions.MultiLine);
answered Nov 14 '18 at 23:11
Poul BakPoul Bak
5,48831233
1
The string in the question"http://www.google.com www.google.com somesite.com"doesn't contain line-feeds, but just simple spaces as url delimiters. I just checked the source text of the question. With regard to the string in the sample code in the question RegexOptions.MultiLine will not help...
– elgonzo
Nov 14 '18 at 23:16
add a comment |
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1 Answer
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1 Answer
1
active
oldest
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active
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oldest
votes
0
The reason is simple: regex101.com automatically apply the 'MultiLine' option, which is necessary in your case.
Your code should be:
var websiteRegex = new Regex(WEBSITE_PATTERN, RegexOptions.IgnoreCase | RegexOptions.MultiLine);
answered Nov 14 '18 at 23:11
Poul BakPoul Bak
5,48831233
1
The string in the question"http://www.google.com www.google.com somesite.com"doesn't contain line-feeds, but just simple spaces as url delimiters. I just checked the source text of the question. With regard to the string in the sample code in the question RegexOptions.MultiLine will not help...
– elgonzo
Nov 14 '18 at 23:16
add a comment |
0
The reason is simple: regex101.com automatically apply the 'MultiLine' option, which is necessary in your case.
Your code should be:
var websiteRegex = new Regex(WEBSITE_PATTERN, RegexOptions.IgnoreCase | RegexOptions.MultiLine);
answered Nov 14 '18 at 23:11
Poul BakPoul Bak
5,48831233
1
The string in the question"http://www.google.com www.google.com somesite.com"doesn't contain line-feeds, but just simple spaces as url delimiters. I just checked the source text of the question. With regard to the string in the sample code in the question RegexOptions.MultiLine will not help...
– elgonzo
Nov 14 '18 at 23:16
add a comment |
0
0
0
The reason is simple: regex101.com automatically apply the 'MultiLine' option, which is necessary in your case.
Your code should be:
var websiteRegex = new Regex(WEBSITE_PATTERN, RegexOptions.IgnoreCase | RegexOptions.MultiLine);
answered Nov 14 '18 at 23:11
Poul BakPoul Bak
5,48831233
The reason is simple: regex101.com automatically apply the 'MultiLine' option, which is necessary in your case.
Your code should be:
var websiteRegex = new Regex(WEBSITE_PATTERN, RegexOptions.IgnoreCase | RegexOptions.MultiLine);
answered Nov 14 '18 at 23:11
Poul BakPoul Bak
5,48831233
edited Nov 14 '18 at 23:36
answered Nov 14 '18 at 23:11
Poul BakPoul Bak
5,48831233
answered Nov 14 '18 at 23:11
Poul BakPoul Bak
5,48831233
answered Nov 14 '18 at 23:11
Poul BakPoul Bak
5,48831233
5,48831233
1
The string in the question"http://www.google.com www.google.com somesite.com"doesn't contain line-feeds, but just simple spaces as url delimiters. I just checked the source text of the question. With regard to the string in the sample code in the question RegexOptions.MultiLine will not help...
– elgonzo
Nov 14 '18 at 23:16
add a comment |
1
The string in the question"http://www.google.com www.google.com somesite.com"doesn't contain line-feeds, but just simple spaces as url delimiters. I just checked the source text of the question. With regard to the string in the sample code in the question RegexOptions.MultiLine will not help...
– elgonzo
Nov 14 '18 at 23:16
1
1
The string in the question
"http://www.google.com www.google.com somesite.com" doesn't contain line-feeds, but just simple spaces as url delimiters. I just checked the source text of the question. With regard to the string in the sample code in the question RegexOptions.MultiLine will not help...– elgonzo
Nov 14 '18 at 23:16
The string in the question
"http://www.google.com www.google.com somesite.com" doesn't contain line-feeds, but just simple spaces as url delimiters. I just checked the source text of the question. With regard to the string in the sample code in the question RegexOptions.MultiLine will not help...– elgonzo
Nov 14 '18 at 23:16
add a comment |
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How are you declaring
WEBSITE_PATTERN?– greenjaed
Nov 14 '18 at 23:09
private readonly string WEBSITE_PATTERN = @"^(?i)(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]1[a-z0-9]+)*.[a-z]2,5(:[0-9]1,5)?(/.*)?$";
– Ian Tunbridge
Nov 14 '18 at 23:09
1
Ahem, it cannot match the string
"http://www.google.com www.google.com somesite.com"because you use the^and$anchors...– elgonzo
Nov 14 '18 at 23:11
1
Thanks @elgonzo I wasn't sure what those did. I was just borrowing the pattern from someone else's example. Both your comment and Poul Bak's answer were correct!
– Ian Tunbridge
Nov 14 '18 at 23:18
The thing is your pattern matches the whole string that is a URL. If you tested against
"http://www.google.comnwww.google.comnsomesite.com", why do you think it will work the same against"http://www.google.com www.google.com somesite.com"?– Wiktor Stribiżew
Nov 14 '18 at 23:23