Editing RichText Document's RTF

See more:

C#

hi,
and a very successfull year to all of you

the current project I'm working on is at the stage of creating a formatted report to
be printed.
I use RichTextBox to build the text and then add the formatting to the corresponding RTF.

which might look like this :

rtf.OnCmd(BOLD); rtf.AddText("*"); rtf.OffCmd(BOLD);

rtf is an instance of CRtbx derived from RichTextBox.
OnCmd(..) adds an rtf on-tag, OffCmd(..) adds an rtf off-tag, AddText does Text.Append("..");

for the last two weeks i've experimented a lot with RTF and
what is working is : add font to fonttable, set font, set font size and
set text to bold, underline and italics.

Now here is what got me stuck for about a week :

I'm unable to add the Info-Group with some Items ({\Info {Itm1}...{ItmN}}

I do :

rtf.AddText("*");
string strRtf = Rtf;

strRtf looks like this (A):

{\\rtf1\\ansi\\ansicpg1252\\deff0\\deflang1031<br />
	{\\fonttbl{\\f0\\fnil\\fcharset0 Microsoft Sans Serif;}}\r\n<br />
	\\viewkind4\\uc1\\pard\\f0\\fs17<br />
 	 *\\par\r\n}\r\n"

after inserting the Info-Group with the item 'nofpages1' strRtf looks like this (B):

{\\rtf1\\ansi\\ansicpg1252\\deff0\\deflang1031<br />
	{\\fonttbl{\\f0\\fnil\\fcharset0 Microsoft Sans Serif;}}\r\n<br />
	{\\Info{\\nofpages1}}<br />
	\\viewkind4\\uc1\\pard\\f0\\fs17<br />
	 *\\par\r\n}\r\n"

but after

Rtf = strRtf

Rtf hasn't changed and still looks like (A)

what am I doing wrong here ?
so far google was of no help at all

thanks in advance