问如何分割RTF文件

EN

我想将RTF文件(使用C#或VB.Net)分割成两个或更多的部分，由字符串[BreakPage]来分割。举个例子，这个文件包含一个[BreakPage]，需要分成两部分：

{\rtf1\ansi\ansicpg1251\uc1\deff0\stshfdbch0\stshfloch0\stshfhich0\stshfbi0\deflang1049\deflangfe1049{\fonttbl{\f0\froman\fcharset204\fprq2{*\panose 02020603050405020304}

新罗马；}{F38\fcharset0\fprq2 2次新罗马；}{f41 36\froman\fcharset238\fprq2 2次新罗马CE；}{F39\fcharset0 161\fprq2 2次新罗马希腊语；}{F40\froman\fcharset0 162\fprq2 2次新罗马图尔；}{\F41\froman\fcharset177\fprq2次新罗马(希伯来语)；}{F42\froman\fcharset178\fprq2 2倍于新罗马(阿拉伯语)；}{F43\fcharset186\fprq2 2倍于新罗马波罗的海；}{ff44\froman\fcharset163 163\fprq2 2倍新罗马(Vietnamese);}}{\colortbl;\red0\green0\blue0;\red0\green0\blue255;\red0\green255\blue255；\red0\green255\blue0;\red255\green0\blue255;\red255\green0\blue0;\red255\green255\blue0;\red255\green255\blue255;\red0\green0\blue128;\red0\green128\blue128；\red0\green128\blue0;\red128\green0\blue128;\red128\green0\blue0;\red128\green128\blue0；\red128\green128\blue128;\red192\green192\blue192;}{\stylesheet{\ql \li0\ri0\widctlpar\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0 \fs24\lang1049\langfe1049\cgrid\langnp1049\langfenp1049 \snext0 0普通；}{*\cs10 10\相加\ssemi隐含默认段落字体；}{*\ts11\tsrowd\trftsWidthB3\trpaddl108\trpaddr108\trpaddfl3\trpaddft3\trpaddfb3\trpaddfr3\trcbpat1\trcfpat1\tscellwidthfts0\tsvertalt\tsbrdrt\tsbrdrl\tsbrdrb\tsbrdrr\tsbrdrdgl\tsbrdrdgr\tsbrdrh\tsbrdrv \ql \li0\ri0\widctlpar\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0 \fs20\lang1024\langfe1024\cgrid\langnp1024\langfenp1024 \snext11 11\ssemi隐含正常Table;}}{*\latentstyles\lsdstimax156\lsdlockeddef0}{*\rsidtbl \rsid2111663\rsid7154806 \rsid15558346}{*\生成器Microsoft 11.0.5604；}{\info{\作者程序员}{\操作符Programmer}{\creatim\yr2011\mo8\dy2\hr12\min45}{\revtim\yr2011\mo8\dy5\hr12\min34}{\version3}{\edmins1}{\nofpages1}{\nofwords5}{\nofchars34}{\nofcharsws38} {\vern24689}}\margl1701\margr850\margt1134\margb1134 \widowctrl\ftnbj\aenddoc\noxlattoyen\expshrtn\noultrlspc\dntblnsbdb\nospaceforul\hyphcaps0\horzdoc\dghspace120\dgvspace120\dghorigin1701\dgvorigin1984\dghshow0\dgvshow3 \jcompress\viewkind1 1\sftnbj {*\pnseclvl1\pnucrm\pnstart1\pnindent720\pnhang {\pntxta .}}{*\pnseclvl2\pnucltr\pnstart1\pnindent720\pnhang {\pntxta .}}{*\pnseclvl3 \pnindent720\pnindent720\pntxta .}}{*\pnseclvl4\pnlcltr\pnstart1\pnindent720\pnhang {\pntxta .}}{*\pnseclvl4\pnlcltr\pnstart1\pnindent720\pnhang {\pntxta (})}{*\pnseclvl6\pnlcltr\pnstart1\pnindent720\pnhang {pntxtb(}{pntxta)} {*\pnseclvl7\pnlcrm\pnstart1\pnindent720\pnhang {\pntxtb (}{pntxta )}}{*\pnseclvl8\pnlcltr\pnstart1\pnindent720\pnhang {\pntxta)}}{*\pnseclvl8\pnlcltr\pnstart1\pnindent720\pnhang{\pntxta)}}{*\pnseclvl8\pnlcltr\pnstart1\pnindent720\pnhang(}{pntxta )}}{*\pnseclvl9\pnlcrm\pnstart1\pnindent720\pnhang (}{pntxta )}} )fs24\lang1049\langfe1049\cgrid\langnp1049\langfenp1049 {\b\rsid7154806\charrsid7154806线1 \par }{\rsid7154806 \par }{\i\rsid7154806\charrsid7154806 Line3}{\lang1048\langfe1049\langnp1048\insrsid7154806 \par }{\lang1048\langfe1049\langnp1048\insrsid2111663 BreakPage \{\insrsid7154806 Line4 \par Line5 \par }

有谁可以帮我？

谢谢!