Need help with RegEx

  • Thread starter Thread starter Alexander Vasilevsky
  • Start date Start date
A

Alexander Vasilevsky

This code
Regex ge = new Regex("[,\f/]");

string format = ge.Replace("8 kBit/s, 8,000 Hz, Mono", "_");

returns

"8 kBit_s_ 8_000 Hz_ Mono"
and I need
"8_kBit_s_ 8_000_Hz_ Mono"

http://www.alvas.net - Audio tools for C# and VB.Net developers
 
This code
Regex ge = new Regex("[,\f/]");

string format = ge.Replace("8 kBit/s, 8,000 Hz, Mono", "_");

returns

"8 kBit_s_ 8_000 Hz_ Mono"
and I need
"8_kBit_s_ 8_000_Hz_ Mono"
Click to expand...

Could you explain the rules for that? It's not clear in which
situations you'd want a space to be replaced by _ and in which
situations you wouldn't.

(What is the form feed in the regular expression meant to be doing, by
the way?)

Jon
 
I want to replace all white space " " to "_". See below

"8 kBit_s_ 8_000 Hz_ Mono"
"8_kBit_s_ 8_000_Hz_ Mono"

http://www.alvas.net - Audio tools for C# and VB.Net developers


"Jon Skeet [C# MVP]" <[email protected]> ???????/???????? ? ????????
?????????:
This code
Regex ge = new Regex("[,\f/]");

string format = ge.Replace("8 kBit/s, 8,000 Hz, Mono", "_");

returns

"8 kBit_s_ 8_000 Hz_ Mono"
and I need
"8_kBit_s_ 8_000_Hz_ Mono"
Click to expand...

Could you explain the rules for that? It's not clear in which
situations you'd want a space to be replaced by _ and in which
situations you wouldn't.

(What is the form feed in the regular expression meant to be doing, by
the way?)

Jon
Click to expand...
 
The decision proved very easy
Regex ge = new Regex(@"\W");

;)


http://www.alvas.net - Audio tools for C# and VB.Net developers


"Jon Skeet [C# MVP]" <[email protected]> ???????/???????? ? ????????
?????????:
This code
Regex ge = new Regex("[,\f/]");

string format = ge.Replace("8 kBit/s, 8,000 Hz, Mono", "_");

returns

"8 kBit_s_ 8_000 Hz_ Mono"
and I need
"8_kBit_s_ 8_000_Hz_ Mono"
Click to expand...

Could you explain the rules for that? It's not clear in which
situations you'd want a space to be replaced by _ and in which
situations you wouldn't.

(What is the form feed in the regular expression meant to be doing, by
the way?)

Jon
Click to expand...
 
Alexander Vasilevsky said:
I want to replace all white space " " to "_". See below
Click to expand...

to match any Whitespace use \s
"8 kBit_s_ 8_000 Hz_ Mono"
"8_kBit_s_ 8_000_Hz_ Mono"
Click to expand...

there is a space before 8 and before Mono wich is not replaced. I suppose
this is a typo.

Christof
 
Alexander Vasilevsky said:
The decision proved very easy
Regex ge = new Regex(@"\W");
Click to expand...
this matches all characters, wich are nor letter nor digit. So it will also
replace some non-whitespace charackters. E.g. +*#()&%

Christof
 
I want to replace all white space " " to "_". See below

"8 kBit_s_ 8_000 Hz_ Mono"
"8_kBit_s_ 8_000_Hz_ Mono"
Click to expand...

That hasn't replaced all spaces with _ - you've still got a space
before the 8 and before the M. Do you *actually* want the result to be

"8_kBit_s_8_000_Hz_Mono"

?

It's really, really important to be absolutely accurate in what you
want, otherwise we won't be able to help you.

Jon
 
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