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Search a Multiple Entry RegEx

Basically I have done this in Java and am just wondering how to do this in C#.
I want to search through a String made out of expressions to see if my entry matches any of them.

In Java I did a string with the regex's then made a Pattern to compile the multiple regex's in the string and then a Matcher to match them.

So for example in java

final String REGEX_LIST = "2\\d{4}|
543\\d{2}|
34432\\d4"

Then you can use Pattern.compile (REGEX_LIST)
and used Matcher to match my input against the REGEX_LIST.

ASKER CERTIFIED SOLUTION

kaufmed

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jadunham1

ASKER

Thanks that answers my question.
Is there any reason you can't do
System.Text.RegularExpressions.RegEx reg = new System.Text.RegularExpressions.RegEx("2\\d{4}|543\\d{2}|34432\\d4");

because that is what I was trying to do. You have to initialize the list as a string and then put that in the regular expression?

jadunham1

ASKER

Hmm nevermind that seems to be working as well, not sure what I was doing wrong before.

Thanks!

kaufmed

No. What you just posted should work fine. You have doubled-up the backslashes for the shorthand operators (alternatively, you could use single-slashes and prefix the string with "@"-- e.g. @"2\d{4}|543\d{2}|34432\d4").

Below is a code sample that I tested (Note: I mistyped Regex as RegEx... C# is case-sensitive :) ):

System.Text.RegularExpressions.Regex reg = new System.Text.RegularExpressions.Regex("2\\d{4}|543\\d{2}|34432\\d4");
string sourceData = "54300abcde";

Console.WriteLine(reg.IsMatch(sourceData));  // Returns boolean

Console.ReadKey();

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