Configuration :: URL Rewriting And Google Indexing?

I have implemented URL rewriting and I would like someone to answer if my new URLs will be indexed by google or not.

BACKGROUND:

I have many databound linkbutton which redirects to URL like: www.example.com/product.aspx?PLU=4985783028

What I intended to do is to make above URL look like www.example.com/MY-Nice-Product1-For-Sale-4985783028.xyz . Whuich internally should rewritten as above. I could have easily implemented such URL rewriting but all my databound link button redirects to

/product.aspx?PLU=4985783028 and when this the page at this URL is served to browser it will look like
/product.aspx?PLU=4985783028 and not /MY-Nice-Product1-For-Sale-4985783028.xyz

WHAT I DID:So I implemented my own method of Rewrite. Steps for which I did is as follows

1. I wrote code inside Global.asax in Application_BeginRequest event.

2. I checked for URL if its product.aspx or not (using fullOrigionalpath.Contains)

3. If its product.aspx I would takeout the "PLU" Query parameter and by string manipulation and then call a function to determine product name from the unique ID ("PLU").

4. And then I would redirect the page to "/productname-PLU.xyz" (e.g. here productname is
"MY-Nice-Product1-For-Sale" . AND PLU is "4985783028" so that is redirects to "/MY-Nice-Product1-For-Sale-4985783028.xyz")

5. Once redirected, again, "Application_BeginRequest" event will be called. and there I would check if URL contains. ".xyz" extension.

6. If so, I would takeout PLU by string manipulation and then rewrite URL to right URL which looks like
"/product.aspx?PLU=4985783028"

7. Then after user will see "/MY-Nice-Product1-For-Sale-4985783028.xyz"
on their browser addressbar

This is how I achieved my goal so that all old URL redirects works too and all new URL works too and in both case user will see new URL.

Following is the code

[Code]....
So finally the question is "Will my new URL be indexed by Gooogle?" because the basic intention of doing this was to help with SEO .