Newline in Textbox

  • Thread starter Thread starter Kaka
  • Start date Start date
K

Kaka

Hi, I am a learner for C# and .Net.

I want to know how to put a line break to a string so that when it show in
the textbox the text will be displayed in saperated lines.

e.g.:

String s;
s = "AAAAAAAAAAAAAAAAAAAAA";
s += "BBBBBBBBBBBBBBBBBBBBBBB";
txtOutput.Text = s;

I want to show them like:
AAAAAAAAAAAAAAAAAAAAA
BBBBBBBBBBBBBBBBBBBBBBB

But the output is always in one line:
AAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBB

Even I include a "\n" at the end at the first line:
s = "AAAAAAAAAAAAAAAAAAAAA\n";

Thanks
 
hi,kaka

First make sure the attribute "TextMode" of the textbox have set

to "MultiLine" . Then u can out put the text displayed in saperated lines by

this 2 ways:

1. String s;
s = @"AAAAAAAAAAAAAAAAAAAAA
BBBBBBBBBBBBBBBBBBBBBBB";
txtOutput.Text = s;

2. String s;
s = "AAAAAAAAAAAAAAAAAAAAA";
s += "\nBBBBBBBBBBBBBBBBBBBBBBB";
txtOutput.Text = s;


Hope that is what you were looking for.
 
Chison said:
1. String s;
s = @"AAAAAAAAAAAAAAAAAAAAA
BBBBBBBBBBBBBBBBBBBBBBB";
txtOutput.Text = s;
Click to expand...

This'll give you a newline and several spaces.
2. String s;
s = "AAAAAAAAAAAAAAAAAAAAA";
s += "\nBBBBBBBBBBBBBBBBBBBBBBB";
txtOutput.Text = s;
Click to expand...

This won't give you a newline. Use "\r\n".
 
Gerald Baeck said:
s = "AAAAAAAAAAAAAAAAAAAAA" + Environment.NewLine;
s += "BBBBBBBBBBBBBBBBBBBBBBB";
Click to expand...

Here're a couple of notes about using "\r\n" instead:
<http://tinyurl.com/4pxg9>.

Also note that such string concatenation is inefficient. Using something
like the following would've been better:

s = "AAAAAAAAAAAAAAAAAAAAA" + Environment.NewLine +
"BBBBBBBBBBBBBBBBBBBBBBB";

This effects a single call to String.Concat, avoiding the unnecessary
creation of a temporary string object.
 
C# Learner said:
Here're a couple of notes about using "\r\n" instead:
<http://tinyurl.com/4pxg9>.

Also note that such string concatenation is inefficient. Using something
like the following would've been better:

s = "AAAAAAAAAAAAAAAAAAAAA" + Environment.NewLine +
"BBBBBBBBBBBBBBBBBBBBBBB";

This effects a single call to String.Concat, avoiding the unnecessary
creation of a temporary string object.
Click to expand...

Alternatively, use

s = "AAAAAAAAAAAAAAAAAAAAA"+"\r\n"+
"BBBBBBBBBBBBBBBBBBBBBBB";

so that the compiler does all the concatenation, rather than the
runtime.

I'm slightly wary of using Environment.NewLine for text boxes - as I
understand it, it's really what the operating system sees as the
default newline string for files, which may not be what text boxes need
to use. (For instance, I'm not sure what a Mono port of TextBox would
use - it might use \r\n for compatibility with code developed on
Windows, but then that would break if you used Environment.NewLine...
 
Back
Top