Customized Regex Code with Character

Question

Goal:
The first letter shall be a small or a big character only and after that, the data ":\\" is should follow along. Data ":\\" is static.

Problem:
I have problem with my regex code.

^[a-zA-Z]:*$

Info:

C:\\dd\\sd\\faf.txt      true
c:\\ss\\dw\\fbf.txt      true
D:\\ff\\d3\\fcf.txt      true
d:\\da\\ds\\Df\\ff.txt   true
2:\\ad\\dd\\ff           false
2:\ad\\dd\\ff            false
d:\da\\ds\\Df\\ff.txt    false
c\\ss\\dw\\fbf.txt       false
D:\da\\ds\\Df\\ff.txt    false

Do your strings really contain double backslashes, or is that just how they look in your string literals? Are you aware that you can use C# *verbatim string* literals to avoid all that double-backslash hassle? For example, `var myString = @"C:\dd\sd\faf.txt";` creates the exact string `C:\dd\sd\faf.txt` — Alan Moore, Dec 29 '15 at 02:03
I'm aware about it. Due to syntax code HttpPostedFileBase from asp.net mvc you retrieve it. — HelloWorld1, Dec 29 '15 at 06:52

score 1 · Answer 1 · answered Dec 28 '15 at 21:18

1

You need to detect correct PATH format in Windows.
Using this pattern can help: ^[a-zA-Z]:(\\\\[^\\]+)*
You can check my sample. Also note I add one more test to it:

D:\\da\\ds\Df\\ff.txt    false

answered Dec 28 '15 at 21:18

Ali Nikneshan

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score 0 · Answer 2 · answered Dec 28 '15 at 21:05

0

Close your missing a .* after the : Below should work.

^[a-zA-Z]:.*$

answered Dec 28 '15 at 21:05

inic

522
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score 0 · Accepted Answer · answered Dec 28 '15 at 21:09

0

Look what Expresso can do for you:

answered Dec 28 '15 at 21:09

Steve Wellens

20,506
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It is almost correft that is "^[a-zA-Z]:\\*" as a answer. More complementory will come. – HelloWorld1 Dec 29 '15 at 07:22

Customized Regex Code with Character

3 Answers3

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