I'm trying to check if there are 4 symbols in a row in a string
For example
abcde/-*,f€gh
I want to match if there is /-*,
but the symbols can change to any non-letter, non-digit or non-space
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Can you give an example of string and what you expect to match? – zaitsman May 16 '20 at 01:15
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`/-*` is 3 characters, not `4`? – zaitsman May 16 '20 at 01:18
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it is 4 with the comma – Arda Erbaharli May 16 '20 at 01:20
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I actually defined it in the title @Cary Swoveland. – Arda Erbaharli May 17 '20 at 03:15
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ard, I missed that. The font was too small. – Cary Swoveland May 17 '20 at 03:20
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Next time I will try to make it more readable. I know it is not an excuse but this one is my first question in stackoverflow. – Arda Erbaharli May 17 '20 at 03:26
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Don't be disheartened, Arda, practice makes perfect. – Cary Swoveland May 17 '20 at 04:10
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If you want to test the assertion that a strings contains exactly 4 of those special characters, and they are all in a row, you can use the regular expression `^[a-zA-Z0-9\s]*[^a-zA-Z0-9\s]{4}[a-zA-Z0-9\s]*$`. That reads, "match the beginning of the line followed by zero or more non-special characters followed by 4 special characters followed by zero or more non-special characters followed by the end of the line. – Cary Swoveland May 17 '20 at 04:14
1 Answers
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I think this oughta just do it:
([^a-zA-Z0-9\s]){4,}
Can use it like so:
Console.WriteLine(Regex.Match("abcde/-*,f€gh", @"([^a-zA-Z0-9\s]){4,}").Success); // Prints True
Console.WriteLine(Regex.Match("abcde/- *,f€gh", @"([^a-zA-Z0-9\s]){4,}").Success); // Prints False
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Thank you, that works exactly as I wanted. Also I'm sorry for asking with little information, this is my first question in the stackoverflow. – Arda Erbaharli May 16 '20 at 01:28