ASP.NET MVC Preview 3 Release
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by Scott Guthrie
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Richer URL Route Mapping Features

ASP.NET MVC Preview 3 also supports a bunch of new URL route mapping features.  You can now include "-", ".", ";" or any other characters you want as part of your route rules.

For example, using a "-" separator you can now parse the language and locale values from your URLs separately using a rule like below:

Figure 17

This would pass appropriate "language", "locale", and "category" parameters to a ProductsController.Browse action method when invoked:

URL Route Rule

Example URL

Parameters Passed to Action method

{language}-{locale}/products/browse/{category}

/en-us/products/browse/food

language=en, locale=us, category=food

 

/en-uk/products/browse/food

language=en, locale=uk, category=food

Or you can use the "." file extension type at the end of a URL to determine whether to render back the result in either a XML or HTML format:

Figure 18

This would pass both "category" and a "format" parameters to the ProductsController.Browse action method when invoked:

URL Route Rule

Example URL

Parameters Passed to Action method

products/browse/{category}.{format}

/products/browse/food.xml

category=food, format=xml

 

/products/browse/food.html

category=food, format=html

ASP.NET MVC Preview 3 also supports wildcard route rules (these were also in Preview 2).  For example, you can indicate in a rule to pass all remaining URI content on as a named parameter to an action method:

Figure 19

This would pass a "contentUrl" parameter to the WikiController.DisplayPage action method when invoked:

URL Route Rule

Example URL

Parameters Passed to Action method

Wiki/Pages/{*contentUrl}

/Wiki/Pages/People/Scott

contentUrl="People/Scott"

 

/Wiki/Pages/Countries/UK

contentUrl="Countries/UK"

These wildcard routes are very useful to look at if you are building a blogging, wiki, cms or other content based system.


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