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Need to match regex for below patterns
I/p: 101-123
O/p: 101-123

What I have tried:

private Regex Example = new Regex(@"^\d{3}-\d{3}(-[A-Z0-9]+)?(\([A-Z0-9]+\))?(\s[a-zA-Z0-9]+)*$");
Updated 22-Feb-23 3:58am
PIEBALDconsult 21-Feb-23 16:03pm    
I think a copy of Expresso is in your future.
RedDk 22-Feb-23 13:20pm    
... eyeah, Expresso: free (NOT!) ...

A good site for experimenting with/Learning RegEx is regex101: build, test, and debug regex[^]
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If you are going to use regular expressions, you need a helper tool. Get a copy of Expresso[^] - it's free, and it examines and generates Regular expressions.
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