Check entire string matches the RegEx or not

Question

I do have the following code

Regex rx = new Regex(@"(\w{2}(\,\w{2})*)+");

I don't know how to check if the entire input string falls into that format or not for example

INPUT: W2 -> true
INPUT x3,4e -> true
INPUT x3,4e,33 -> true

INPUT: x -> false
INPUT x3,e -> false

I do not need to find any matches! I just need to know if the input is in the correct format or not.

Thanks

Try http://msdn.microsoft.com/en-us/library/3y21t6y4%28v=vs.110%29.aspx — Steve Howard, Jan 08 '15 at 19:28
In what way did it not work? Did you try @juharr's suggestion of anchoring the pattern with ^ and $? — Steve Howard, Jan 08 '15 at 19:30

score 1 · Answer 1 · answered Jan 08 '15 at 19:33

@Steve Howard & @Juharr

Thank you guys, worked !

Regex rx = new Regex(@"^(\w{2}(\,\w{2})*)+$");
            string input = txtTermCodes.Text.Trim();
            if(rx.IsMatch(input))
                return true;
            else 
                return false;

score 0 · Answer 2 · answered Jan 08 '15 at 19:37

0

You have to extract the result of the match, which is a string, then compare its length to the length of your input, like so:

Regex rx = new Regex(@"(\w{2}(\,\w{2})*)+");
String input = "Your input";
Match m = rx.Match(input);

if (!m.Success) return false;

return m.Length == input.Length;

answered Jan 08 '15 at 19:37

Balázs

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It does not work, Try dd,dd – user3375740 Jan 08 '15 at 21:26

Check entire string matches the RegEx or not

2 Answers2