Regular expression to match specific pattern

Question

Please help me correct this regular expression in C# to match/validate only when the following is true:

This is what I have, but it's not working:

/^da/+[a-z0-9+-]+$/

Example of accepted string that will validate the regular expression:

da/this-will-validate-correct-1

but not working - how exactly doesn't it work? Please provide sample input and expected output. Most probably you just need ^da/[a-z0-9+-]+$ — Wiktor Stribiżew
– Wiktor Stribiżew, Commented May 15, 2016 at 15:26

Wiktor Stribiżew · Accepted Answer · 2016-05-15 15:42:40Z

2

Your regex allows 1 or more / after da and the + inside the character class allowed + symbols.

Judging by the requirements, you just need

^da/[a-z0-9-]+$

The + after the character class [a-z0-9+-] requires at least 1 character after da/.

Regex.IsMatch("da/this-will-validate-correct-1", @"^da/[a-z0-9-]+$")

See the C# demo

Pattern explanation:

answered May 15, 2016 at 15:31

Wiktor Stribiżew

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Comments

seay · Accepted Answer · 2016-05-15 15:40:04Z

0

you can try this ^da/[a-z0-9\-]+$

answered May 15, 2016 at 15:40

seay

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