CODEWITHSUNDEEP
c#regexstring
Andrew
Andrew

Reputation: 7768

parse string and make sure that it ontains a 9-digit number

I have a string

//webcache.googleusercontent.com/search?hl=en&lr=&rlz=1G1GGLQ_IWIL297&q=cache:UadRLVLrpCQJ:http://www.buy.com/prod/pny-geforce-9800-gx2-1gb-512-bit-ddr3-600mhz-pci-e-2-0-dual-dvi-hdmi/207534756.html%2BVCG98GX2XPB%2Bsite%253Abuy.com&ct=clnk

How can I check if it contains a sequence of 9-digits? In this example, it has 207534756

I tried this:

String resultString = Regex.Match(i.ToString(), @"\d+").Value;
if (resultString.Length == 9){}

but it does not work

Upvotes: 0

Views: 342

Answers (4)

Hristo Iliev
Hristo Iliev

Reputation: 74375

Try with @"[0-9]{9}". It will match exactly 9 digits in a row.

Edit: More correctly is to also ensure that there are no other digits around: @"(^|[^0-9])[0-9]{9}([^0-9]|$)"

Upvotes: 5

Jay
Jay

Reputation: 3355

'\d{9}'

See http://www.w3schools.com/jsref/jsref_obj_regexp.asp which is just a good reference... there is also RegexBuddy... just Google Regex Reference

Upvotes: 0

Oded
Oded

Reputation: 498952

Change the regex to match strings of 9 digits:

@"\d{9}"

Also, your current code doesn't work because you are using Regex.Match which only returns the first match.

You should be using Regex.Matches and loop over the results.

Upvotes: 1

Ry-
Ry-

Reputation: 224886

Just use Regex.IsMatch and a regular expression with a repetition length specifier:

if(Regex.IsMatch(i.ToString(), @"\d{9}")) {
    // ...
}

Upvotes: 4

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