[c#] join lines in richtextbox

[booyeeka]

on a windows form, i have RichTextBox, with some text, in several lines. and one button on a form.

i wolud like when i click on that button, to join all richtextbox of lines in one line, but not to loose text style (like font family, color, etc.)

i can not do it with Replace, like \r\n, and not with the Replace(Environ ment.NewLine, "")........ :-((

i have also tryed to replace \par and \pard, but still no luck.......

please help!!!

[GaryTexmo]

I bet I know what you did :D

You likely went...

myRichTextBox.Rtf.Replace("\\par", "");

You actually want to do...

myRichTextBox.Rtf = myRichTextBox.Rtf.Replace("\\par", "");

The string replace method doesn't modify the actual string, it returns the modified string instead, so you need to assign it. I gave this a try and it worked for me, though there was some unexpected side effects. I'm not sure if you should replace the par... I don't really know the rich text format offhand... let me play around a bit more.

** Update:
Ok, it looks like the "\par" code is the newline, but there's also a "\pard" code in there. Since the string.Replace method isn't very choosy, it will knock out a "\pard" code and make it a "\d" code, which was generating my issue.

Knowing nothing about the Rtf format, I blindly replaced "\pard" with blank before I did "\par" and it worked, but I'd highly recommend making a better replace function on your own to make sure you knock out exactly what you want.

Maybe someone else has a suggestion for a "safer" way of doing this...?

[booyeeka]

nope
:-(

i had sevaral attempts to solve this... all of them was with code like

myRichTextBox.R tf = myRichTextBox.R tf.Replace("\\p ar", "");

i tryed with
\\pard
\\pad
\\n
\\r\\n
Enviroment.Newl ine

etc etc, but i can not get result i want...

i simply can not understand where is the problem... is maybe something to do with character encoding?

[GaryTexmo]

Well, my final solution replaced \pard with nothing, then \par with nothing. I'm guessing the control was smart enough to figure out when something was missing because when I checked the text after the replacement, the \pard was back but the \par wasn't.

Oh! I forgot to mention, since the richtextbox sorts itself out when there are errors, you have to do the change as such...

string modifyRtf = myRichTextBox.Rtf;
modifyRtf = modifyRtf.Replace("\\pard", "");
modifyRtf = modifyRtf.Replace("\\par", "");
myRichTextBox.Rtf = modifyRtf;

The way I went about this was to do a Console.WriteLi ne on myRichTextBox.R tf and see what was there. Then I did my replacements and outputted the Rtf again to compare. That's how I saw the issue with \pard.

Maybe doing that kind of comparison would help you work through it?

**** IMPORTANT ****
Here's the specification for the RTF format...

http://www.microsoft.com/downloads/details.aspx?FamilyId=DD422B8D-FF06-4207-B476-6B5396A18A2B&displaylang=en

On page 144, line 32 it mentions that \par is indeed what a carriage return/line feed is. However, \pard is something entirely different, so you'll definitely want to make your own replacement method so you don't blow away \pard when replacing \par with nothing.