How to match Pattern using Regex in C#

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I want to match Patterns Starts With 9838/9839/9918/9919

and followed by these patterns(these are mobile numbers)
starting digits like 9839 and last 6 digits like below patterns

XXYYAB AXXYYZ AXYZ00 AXXXYZ ABXXYY AXYYYZ AXXXXY
337719 733119 912300 522238 295588 257772 488886

I used Regular Expression 9839([0-9])\1{3} this regex matching 9839AXXXXZ but it also returning 5 times matched digits like 9839555559

For Example Mobile Numbers-
9839337719-XXYYAB
9839733119-AXXYYZ
9839912300-AXYZ00
9839522238-AXXXYZ
9839295588-ABXXYY
9839257772-AXYYYZ
9839488886-AXXXXY

I'm stuck please help me out guys
thanks in advance

Posted 4-Dec-14 20:53pm

Surendra0x2

Updated 12-Dec-14 0:40am

v2

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Comments

TheRealSteveJudge 5-Dec-14 3:38am

Unfortunately unclear.
Can you give some examples of input data
and tell us what you want to extract or match?

Surendra0x2 5-Dec-14 3:53am

like Mobile Number Starts With 9839 and Rest 6 Digits are AXXXXY means 9839255556 here 5 repeating 4 times I want to build a regular expression it and search in database matching regular expression like this.

Marcin Kozub 5-Dec-14 3:47am

There is very usefull tool for testing regular expressions and it can be used for free: http://www.ultrapico.com/expresso.htm

PeejayAdams 5-Dec-14 7:19am

9839([0-9])\1{3}(?!\1)

would stop the next character being a repeat of the previous group by using a negative backreference but you'd need a separate check for the string being all numeric.

I suspect that someone out there will know how to combine both checks into a single regex.

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Maciej Los · Answer 1 · 2014-12-12T01:45:00

Solution 1

As per i understand you well, the regex pattern should look like: ^(9838|9839|9918|9919)\d{6}\-\w{6}$* with mulitline option set to true.
I tested it on:

9839337719-XXYYAB
9839733119-AXXYYZ
9839912300-AXYZ00
9838488886-AUXXXU
9839522238-AXXXYZ
9839295588-ABXXYY
9949488886-AUXXXY
9839257772-AXYYYZ
9839488886-AXXXXY
9859488886-AXXXXY

It returns 8 records fulfilling criteria (the last one is ignored).

Posted 12-Dec-14 1:45am

Maciej Los

Comments

Surendra0x2 13-Dec-14 3:38am

Sir it is for c#?when i applied in c# its not returning any matched results..

Maciej Los 13-Dec-14 4:18am

I tested it using RegexDesigner.