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URL Rewrite Mapping question.

Hi,

I have a website written in .Net c# and we are on win2008 iis7.

Now IIS7 is great and it provides rewrite module. However I need help for automating my url rewrite. I have thousands of records in my database and i can not possibly create a rewrite rule for each.

I have 3 sections in the website Concerts, Sports, Art & Theatre

--------------------------------------------------------
Concert Category

The url structure:
www.domain.com/Music.aspx?eid=2e051e40-63d0-dd11-a62a-003048676ea7

Should rewrite as
http://www.yourticketmarket.com/concerts-tickets/melanie-tickets

As you can guess the eid query string gets the event details from the database and displays it on the page. I can easily create a rule to replace this id with melani-tickets.
----------------------------------------------------------

Theatre Category

The url structure is the same but the file is different.
http://www.domain.com/ArtAndTheater.aspx?eid=6bbc1d2f-1edb-dd11-8af8-003048676ea7

Should rewrite as
http://www.yourticketmarket.com/theatre-tickets/oliver-tickets

-----------------------------------------------------------

so on...

The problem is how can I automatically create url rewrite for each record in the database? For example how can I get the name of the event to use in the structure above?

Many thanks for your comments in advance!




0
scava
Asked:
scava
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1 Solution
 
Hube02Commented:
Okay, first, let me say that I'm no expert with rewriting on IIS7 or C#, but my comments are more to the point of theory than actual coding.

It probably is not a good idea to try to generate a different unique rewrite rule for every posibility in the database, this is due to the fact that this list would have to be regenerated every time the is a database changes. Instead, I would look for a way to create several generic rewrites that would encompass all the possibilities.

So lets take a single example from your above examples:

***************************
The url structure:
www.domain.com/Music.aspx?eid=2e051e40-63d0-dd11-a62a-003048676ea7

Should rewrite as
http://www.yourticketmarket.com/concerts-tickets/melanie-tickets
***************************

What I would do here is have a rule that rewrites:

/concerts-tickets/melanie

to:

/Music.aspx?artist=melanie

I'm just using artist=melanie for an example. This would also need to be something unique in your database.

Now, when Music.aspx is called, instead of looking up the eid value, you would look up the artist value to get the eid value and then process your page as normal. What this means is that you only need 3 rewrite rules rather than the potential thousands of rules you would need if you have a very large database of information.

What this means, as mentioned above, each event name would need to be unique in some way so that you can look up the event by the event name, rather than by the eid value. So a change to the way the database functions. In this case I might alter the rule a bit. For instance, each event may not have a unique name, but each event is likely associated with a specific date, so the event name combined with the event date would give you a unique combination that you can look up. This means that instead of the URLs you propose, you would also need to include the date somehow.

for instance:
http://www.yourticketmarket.com/theatre-tickets/oliver-tickets/20090515
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scavaAuthor Commented:
Thanks,

for this we will have to make considerable changes in the code. The application is massive and we can only work with querystring eid.

Events will be entered to the system only once and each will have its own unique number (eID) therefore I need a solution such as "URL Mapping", or is there another way?

Any examples would be appreciated on .NET CSharp if applicable.

Many thanks
 




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Tony McCreathTechnical SEO ConsultantCommented:
The other way is to create a .Net HttpModule to do rewriting for you.

As its in your application you can access the database to gather the extra data you need.

HttpModules can intercept requests and use RewritePath to change where the request ends up.

To have it handle folders as well you will need to configure the application so that it has a wildcard mapping to the correct aspnet_isapi.dll (uncheck 'check if file exists').

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scavaAuthor Commented:
Thanks. This is not specific but it has given us an answer on the path we should take.
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