c# regex required [closed]

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I am very poor in regex, i would appreciate if someone helps in this regex

Regex should match :- any text before first forward-slash else full text, and then text that is not inside braces

HELLO/anything/blah/bhah ---------> should ret开发者_Python百科urn HELLO 
{HELLO}/anything/blah/bhah -------> should not return any thing
ABC/blah/blah---------------------> should return ABC
ABC-------------------------------> should return ABC

---

^\w+ should work where:

^ - match beginning of input

\w - match any word character (0-9a-zA-Z plus a few punctuation)

+ - match one or more

If you'd prefer to be explicit:

^[0-9a-zA-Z]+

[0-9a-zA-Z] means almost the same as \w

---

This simple regex matches the requirements as you stated them:

^[A-Z]*

Starting from the start of the string, it takes any uppercase letters until it meets a character not in the list, which means it stops at the { and / characters.

---

You can use this regex for example:

var l = new string[] {
    "HELLO/anything/blah/bhah",
    "{HELLO}/anything/blah/bhah",
    "ABC/blah/blah",
    "ABC"
};

foreach (var s in l)
{
    Regex r = new Regex("^(?!{[^/]*})([^/]*)/?");
    Console.WriteLine(r.Match(s).Groups[1].Value);
}