Hi ganagrocks,
Instead of reading parameters from the pdf which will force to use some third party dlls like itextsharp.dll and SharpZiplib.
I would recomend you to export the report in xml and reading the parameter value from a text box which you can hide in your main report and it will be damn easy. the xml file will look something like the below image where I have passed paramOne and paramTwo
and I read the value of the paramters from the two nodes.
<?xml version="1.0" encoding="UTF-8"?>
-<Report xmlns="Report1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" paramTwo="True" paramOne="BookTitle1,BookTitle1,BookTitle1,BookTitle1,BookTitle1,BookTitle2,BookTitle2,BookTitle2,BookTitle2,BookTitle2,BookTitle3,BookTitle3,BookTitle3,BookTitle3,BookTitle3,BookTitle4,BookTitle4,BookTitle4,BookTitle4,BookTitle4,BookTitle5,BookTitle5,BookTitle5,BookTitle5,BookTitle5"
Name="Report1" xsi:schemaLocation="Report1 http://reportserver?%2FReport1&rs%3AFormat=XML&rc%3ASchema=True">
-<Tablix1>
-<Details_Collection>
<Details c2="BookGenre1" c1="BookTitle1"/>
<Details c2="BookGenre1" c1="BookTitle1"/>
<Details c2="BookGenre1" c1="BookTitle1"/>
<Details c2="BookGenre1" c1="BookTitle1"/>
<Details c2="BookGenre1" c1="BookTitle1"/>
<Details c2="BookGenre2" c1="BookTitle2"/>
<Details c2="BookGenre2" c1="BookTitle2"/>
<Details c2="BookGenre2" c1="BookTitle2"/>
<Details c2="BookGenre2" c1="BookTitle2"/>
<Details c2="BookGenre2" c1="BookTitle2"/>
<Details c2="BookGenre3" c1="BookTitle3"/>
<Details c2="BookGenre3" c1="BookTitle3"/>
<Details c2="BookGenre3" c1="BookTitle3"/>
<Details c2="BookGenre3" c1="BookTitle3"/>
<Details c2="BookGenre3" c1="BookTitle3"/>
<Details c2="BookGenre4" c1="BookTitle4"/>
<Details c2="BookGenre4" c1="BookTitle4"/>
<Details c2="BookGenre4" c1="BookTitle4"/>
<Details c2="BookGenre4" c1="BookTitle4"/>
<Details c2="BookGenre4" c1="BookTitle4"/>
<Details c2="BookGenre5" c1="BookTitle5"/>
<Details c2="BookGenre5" c1="BookTitle5"/>
<Details c2="BookGenre5" c1="BookTitle5"/>
<Details c2="BookGenre5" c1="BookTitle5"/>
<Details c2="BookGenre5" c1="BookTitle5"/>
</Details_Collection>
</Tablix1>
</Report>