Replace /n with a help please

**Swanand Mokashi** · Apr 17 '06, 06:25 PM

Re: Replace /n with a help please

Have you tried replacing chr(10) and chr(13) instead of \n ?

--
Swanand Mokashi
Microsoft Certified Solution Developer (.NET) - Early Achiever
Microsoft Certified Application Developer (.NET)

http://www.dotnetgenerics.com/

DotNetGenerics. com -- anything and everything about Microsoft .NET
technology ...

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"CK" <c_kettenbach@h otmail.com> wrote in message
news:jJQ0g.1658 7$tN3.15814@new ssvr27.news.pro digy.net...[color=blue]
> Hi all,
>
> I have a textarea control. I am putting it's value in an html email. The
> problem is that the new lines are being ignored. I want to take the
> controls value and replace any newline carriage returns, with an html 
> tag. I tried the following function but it doesn't work. Does anyone
> have any ideas how to accomplish this? Thanks in advance. ~ CK
>
> string getComments()
>
> {
>
> string s = tbxComments.Tex t;
>
> Regex r = new Regex("/\n/g");
>
> s = r.Replace(s, " ");
>
>
> return s;
>
> }
>
>[/color]

CK · Apr 17 '06, 06:35 PM

Re: Replace /n with a help please

I am using c# and not VB. Does c# use the chr() function? I do not think
so.
Any other ideas?

"Swanand Mokashi" <swanandNOSPAM@ swanandmokashi. com> wrote in message
news:eFXkcqkYGH A.428@TK2MSFTNG P02.phx.gbl...[color=blue]
> Have you tried replacing chr(10) and chr(13) instead of \n ?
>
>
> --
> Swanand Mokashi
> Microsoft Certified Solution Developer (.NET) - Early Achiever
> Microsoft Certified Application Developer (.NET)
>
> http://www.dotnetgenerics.com/
> DotNetGenerics. com -- anything and everything about Microsoft .NET
> technology ...
>
> http://www.swanandmokashi.com/
> http://www.swanandmokashi.com/HomePage/WebServices/
> Home of the Stock Quotes, Quote of the day and Horoscope web services
>
>
> "CK" <c_kettenbach@h otmail.com> wrote in message
> news:jJQ0g.1658 7$tN3.15814@new ssvr27.news.pro digy.net...[color=green]
>> Hi all,
>>
>> I have a textarea control. I am putting it's value in an html email.
>> The problem is that the new lines are being ignored. I want to take the
>> controls value and replace any newline carriage returns, with an html
>> tag. I tried the following function but it doesn't work. Does
>> anyone have any ideas how to accomplish this? Thanks in advance. ~ CK
>>
>> string getComments()
>>
>> {
>>
>> string s = tbxComments.Tex t;
>>
>> Regex r = new Regex("/\n/g");
>>
>> s = r.Replace(s, " ");
>>
>>
>> return s;
>>
>> }
>>
>>[/color]
>
>[/color]

**Jon Skeet [C# MVP]** · Apr 17 '06, 07:05 PM

Re: Replace /n with a help please

CK <c_kettenbach@h otmail.com> wrote:[color=blue]
> I have a textarea control. I am putting it's value in an html email. The
> problem is that the new lines are being ignored. I want to take the
> controls value and replace any newline carriage returns, with an html 
> tag. I tried the following function but it doesn't work. Does anyone have
> any ideas how to accomplish this? Thanks in advance. ~ CK
>
> string getComments()
> {
> string s = tbxComments.Tex t;
> Regex r = new Regex("/\n/g");
> s = r.Replace(s, " ");
> return s;
> }[/color]

The first thing to do (IMO) is to get rid of the use of regular
expressions when they're unnecessary. I'm not a regex expert, so I
couldn't tell you without looking it up whether the above does what
you'd expect it to - but I *do* know that the following will do what
you'd expect it to:

string replaced = tbxComments.Tex t.Replace ("\n", " ");

Now, that only deals with line feeds, not carriage returns - but you
could always remove all carriage returns afterwards.

--
Jon Skeet - <skeet@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

**Chris Chilvers** · Apr 17 '06, 07:25 PM

Re: Replace /n with a help please

I like to create a text reader and a text writer for this task as you don't have to worry about what
the line terminator is. Just keep calling read line and write line.

Here's a method I wrote to handle this:

public static string ToHtmlNewLine(s tring text) {
if (text == null) return null;

int length;
StringReader reader;
StringWriter writer;
StringBuilder builder;
string line;

length = text.Length() * 1.2; //apply some padding to avoid array resizing, you probably want to
//tweak this value for the size of the strings you're using
reader = new StringReader(te xt);
builder = new StringBuilder(l ength);
writer = new StringWriter(bu ilder) ;

line = reader.ReadLine ();
if (line != null) {
/*this if then while loop avoids adding an extra blank line at the end of the conversion
* as opposed to just using:
* while (line != null) {
* writer.Write(li ne);
* writer.WriteLin e(" ");
*/

writer.Write(li ne);
line = reader.ReadLine ();

while (line != null) {
writer.WriteLin e(" ");
writer.Write(li ne);
line = reader.ReadLine ();
}
}

return writer.ToString ();
}

CK wrote:[color=blue]
> Hi all,
>
> I have a textarea control. I am putting it's value in an html email. The
> problem is that the new lines are being ignored. I want to take the
> controls value and replace any newline carriage returns, with an html 
> tag. I tried the following function but it doesn't work. Does anyone have
> any ideas how to accomplish this? Thanks in advance. ~ CK
>
> string getComments()
>
> {
>
> string s = tbxComments.Tex t;
>
> Regex r = new Regex("/\n/g");
>
> s = r.Replace(s, " ");
>
>
> return s;
>
> }
>
>[/color]

**Swanand Mokashi** · Apr 17 '06, 08:15 PM

Re: Replace /n with a help please

In that case have you tried replace \n as well as\r.
Also you can use Environment.New Line instead of \n

"CK" <c_kettenbach@h otmail.com> wrote in message
news:HZQ0g.1659 3$tN3.1029@news svr27.news.prod igy.net...[color=blue]
>I am using c# and not VB. Does c# use the chr() function? I do not think
>so.
> Any other ideas?
>
> "Swanand Mokashi" <swanandNOSPAM@ swanandmokashi. com> wrote in message
> news:eFXkcqkYGH A.428@TK2MSFTNG P02.phx.gbl...[color=green]
>> Have you tried replacing chr(10) and chr(13) instead of \n ?
>>
>>
>> --
>> Swanand Mokashi
>> Microsoft Certified Solution Developer (.NET) - Early Achiever
>> Microsoft Certified Application Developer (.NET)
>>
>> http://www.dotnetgenerics.com/
>> DotNetGenerics. com -- anything and everything about Microsoft .NET
>> technology ...
>>
>> http://www.swanandmokashi.com/
>> http://www.swanandmokashi.com/HomePage/WebServices/
>> Home of the Stock Quotes, Quote of the day and Horoscope web services
>>
>>
>> "CK" <c_kettenbach@h otmail.com> wrote in message
>> news:jJQ0g.1658 7$tN3.15814@new ssvr27.news.pro digy.net...[color=darkred]
>>> Hi all,
>>>
>>> I have a textarea control. I am putting it's value in an html email.
>>> The problem is that the new lines are being ignored. I want to take the
>>> controls value and replace any newline carriage returns, with an html
>>> tag. I tried the following function but it doesn't work. Does
>>> anyone have any ideas how to accomplish this? Thanks in advance. ~ CK
>>>
>>> string getComments()
>>>
>>> {
>>>
>>> string s = tbxComments.Tex t;
>>>
>>> Regex r = new Regex("/\n/g");
>>>
>>> s = r.Replace(s, " ");
>>>
>>>
>>> return s;
>>>
>>> }
>>>
>>>[/color]
>>
>>[/color]
>
>[/color]

**Jon Skeet [C# MVP]** · Apr 17 '06, 08:15 PM

Re: Replace /n with a help please

Chris Chilvers <keeper@dynafus .com> wrote:[color=blue]
> I like to create a text reader and a text writer for this task as you
> don't have to worry about what the line terminator is. Just keep
> calling read line and write line.[/color]

That's a lot of work for:

string replaced = original.Replac e("\r\n", " ")
.Replace("\r", " ")
.Replace("\n", " ");

In some cases your method *may* be more efficient - but I'd have to see
evidence that it's actually significant in the actual real-world cases
before using a page of code instead of 3 simple lines.

--
Jon Skeet - <skeet@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

**brians[MCSD]** · Apr 17 '06, 08:45 PM

Re: Replace /n with a help please

Something which works for me for replacing carriage return linefeed combo:

string brChar;
string txtMessage;

brChar = Convert.ToStrin g(Convert.ToCha r(13)) +
Convert.ToStrin g(Convert.ToCha r(10));
txtMessage.Repl ace(m_brChar, " ")

--
brians

http://www.limbertech.com

"Jon Skeet [C# MVP]" wrote:
[color=blue]
> CK <c_kettenbach@h otmail.com> wrote:[color=green]
> > I have a textarea control. I am putting it's value in an html email. The
> > problem is that the new lines are being ignored. I want to take the
> > controls value and replace any newline carriage returns, with an html 
> > tag. I tried the following function but it doesn't work. Does anyone have
> > any ideas how to accomplish this? Thanks in advance. ~ CK
> >
> > string getComments()
> > {
> > string s = tbxComments.Tex t;
> > Regex r = new Regex("/\n/g");
> > s = r.Replace(s, " ");
> > return s;
> > }[/color]
>
> The first thing to do (IMO) is to get rid of the use of regular
> expressions when they're unnecessary. I'm not a regex expert, so I
> couldn't tell you without looking it up whether the above does what
> you'd expect it to - but I *do* know that the following will do what
> you'd expect it to:
>
> string replaced = tbxComments.Tex t.Replace ("\n", " ");
>
> Now, that only deals with line feeds, not carriage returns - but you
> could always remove all carriage returns afterwards.
>
> --
> Jon Skeet - <skeet@pobox.co m>
> http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
> If replying to the group, please do not mail me too
>[/color]

**Jon Skeet [C# MVP]** · Apr 17 '06, 09:15 PM

Re: Replace /n with a help please

brians[MCSD] <briansMCSD@dis cussions.micros oft.com> wrote:[color=blue]
> Something which works for me for replacing carriage return linefeed combo:
>
> string brChar;
> string txtMessage;
>
> brChar = Convert.ToStrin g(Convert.ToCha r(13)) +
> Convert.ToStrin g(Convert.ToCha r(10));
> txtMessage.Repl ace(m_brChar, " ")[/color]

That's great - but you don't need to go to all that trouble to get
brChar. It's just "\r\n".

--
Jon Skeet - <skeet@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

**Swanand Mokashi** · Apr 17 '06, 09:15 PM

Re: Replace /n with a help please

The Environment.New Line will probably do the same thing too :)

"Jon Skeet [C# MVP]" <skeet@pobox.co m> wrote in message
news:MPG.1eae11 9b98bfef4f98d0e 0@msnews.micros oft.com...[color=blue]
> brians[MCSD] <briansMCSD@dis cussions.micros oft.com> wrote:[color=green]
>> Something which works for me for replacing carriage return linefeed
>> combo:
>>
>> string brChar;
>> string txtMessage;
>>
>> brChar = Convert.ToStrin g(Convert.ToCha r(13)) +
>> Convert.ToStrin g(Convert.ToCha r(10));
>> txtMessage.Repl ace(m_brChar, " ")[/color]
>
> That's great - but you don't need to go to all that trouble to get
> brChar. It's just "\r\n".
>
> --
> Jon Skeet - <skeet@pobox.co m>
> http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
> If replying to the group, please do not mail me too[/color]

**Jon Skeet [C# MVP]** · Apr 18 '06, 06:25 AM

Re: Replace /n with a help please

Swanand Mokashi <swanandNOSPAM@ swanandmokashi. com> wrote:[color=blue]
> The Environment.New Line will probably do the same thing too :)[/color]

Only on Windows. The point of Environment.New Line (and the reason it's
not a constant) is that it's the *system-dependent* new line string. On
Linux (under Mono, say) it would be "\n".

--
Jon Skeet - <skeet@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

**Peter Kirk** · Apr 18 '06, 09:55 AM

Re: Replace /n with a help please

"Jon Skeet [C# MVP]" <skeet@pobox.co m> skrev i en meddelelse
news:MPG.1eae04 f3d56bb76498d0d d@msnews.micros oft.com...[color=blue]
> Chris Chilvers <keeper@dynafus .com> wrote:[color=green]
>> I like to create a text reader and a text writer for this task as you
>> don't have to worry about what the line terminator is. Just keep
>> calling read line and write line.[/color]
>
> That's a lot of work for:
>
> string replaced = original.Replac e("\r\n", " ")
> .Replace("\r", " ")
> .Replace("\n", " ");[/color]

Hi

I am curious as to why you use '\r' and '\n'? How do you know that the
original string your function receives has these characters as
representations of carriage-returns or new-lines? Does the "textarea
control" mentioned in the original post always use these characters on all
operating systems? (Is it different between windows and linux and unix and
mac os and ...?)

Peter

**Jon Skeet [C# MVP]** · Apr 18 '06, 10:45 AM

Re: Replace /n with a help please

Peter Kirk wrote:[color=blue][color=green]
> > That's a lot of work for:
> >
> > string replaced = original.Replac e("\r\n", " ")
> > .Replace("\r", " ")
> > .Replace("\n", " ");[/color]
>
> I am curious as to why you use '\r' and '\n'? How do you know that the
> original string your function receives has these characters as
> representations of carriage-returns or new-lines? Does the "textarea
> control" mentioned in the original post always use these characters on all
> operating systems? (Is it different between windows and linux and unix and
> mac os and ...?)[/color]

Well, using the combinations above will cover Linux, Windows and Mac
OSX.
There is a possibility of someone using a textbox that doesn't use
those line terminators, but it seems pretty unlikely to me.

Of course, if you only want to cope with one type of line terminator,
you can use just one Replace call :)

Jon

**Chris Chilvers** · Apr 18 '06, 06:15 PM

Re: Replace /n with a help please

Jon Skeet [C# MVP] wrote:[color=blue]
> Chris Chilvers <keeper@dynafus .com> wrote:[color=green]
>> I like to create a text reader and a text writer for this task as you
>> don't have to worry about what the line terminator is. Just keep
>> calling read line and write line.[/color]
>
> That's a lot of work for:
>
> string replaced = original.Replac e("\r\n", " ")
> .Replace("\r", " ")
> .Replace("\n", " ");
>
> In some cases your method *may* be more efficient - but I'd have to see
> evidence that it's actually significant in the actual real-world cases
> before using a page of code instead of 3 simple lines.
>[/color]

In my particular case I first wrote the method to read straight out of a file then output the
results straight to the text writer in a web control's render method. Since I already had such a
method I just borrowed the original one and overloaded it.

Replace /n with a <br> help please

Replace /n with a <br> help please

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