Regular Expressions in C#.Net

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Hi,

I have a requirement in my project where the input will be 1;827364726 or 2;34833560.
i.e the input must starts with either with 1 or 2 and a delimitor(;)and then any number from 0-9.I want to validate the input before processing.So i want to use regular expression pattern something like as shown below.The below regular expression pattern is not working

var patt=/[12];[0-9]/

Is there anyway to validate my input in C# or i must go with regular expression pattern?

Thanks
Prashanth

Posted 8-Jan-12 2:07am

cherlaprashanth

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2 solutions

Solution 1

With regular expressions you could possibly use something like:

[12];(\d){8,9}

Another option would be to split the text based on the semicolon and check that there are two return elements, the first one has number 1 or 2 and the second one is integer. Methods to use with this would be:
- String.Split[^]
- Int32.TryParse[^]

Posted 8-Jan-12 2:13am

Wendelius

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Neema Derakhshan · Accepted Answer · 2012-01-08T02:42:00

Solution 2

you can use this patt

C#

^[12];\d+$

Posted 8-Jan-12 2:42am

Neema Derakhshan

Updated 8-Jan-12 3:30am

v2

Comments

cherlaprashanth 8-Jan-12 10:12am

The regular expression is working fine.Thank U.
Can we do the same with any of the string methods?

cherlaprashanth 8-Jan-12 11:11am

Thanks for the answer

Neema Derakhshan 9-Jan-12 6:36am

your wellcome but actually I did'nt try string methods :)