By tag: DesignByContract
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Using PreconditionFilter with the new HandleErrorAttribute in ASP.NET
An example of how to use Precondition Filters in conjunction with HandleErrorAttribute to provide user-friendly error pages when users try to link to your URLs with invalid route data, query strings, etc...
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ASP.NET MVC Controller Action Precondition Filter
Here is code that will allow you to decorate your MVC Actions with attributes that will define your needed "preconditions".
I often find the need to check for the existence of a parameter passed to a web page, such as an ID, and also often need to check if the ID is valid as well (e.g.:...