By Andrew Siemer; Richard Kimber
Read or Download ASP.NET MVC 2 cookbook : over 70 clear and incredibly effective recipes to get the most out of the many tools and features of the ASP.NET MVC framework PDF
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Additional info for ASP.NET MVC 2 cookbook : over 70 clear and incredibly effective recipes to get the most out of the many tools and features of the ASP.NET MVC framework
Now you can start debugging by hitting F5 and see the results of our database-driven view. How it works... This is a simple modification to the way that NVelocity would normally work. In most cases, you would store your NVelocity templates on the file system or in the resource files. These are then read by a file-based template reader and parsed similarly to the fashion defined earlier. All that we did differently was grabbed our content from the database. We have still piggybacked our implementation of NVelocity on top of the MVC framework and most importantly on top of the WebForms view engine.
There are many ways to implement this. Some examples will have many overloads to handle processing memory streams directly or via byte arrays. Others use various forms of extension methods dangled off of the controller itself. An example of why you might want to keep this bit of complexity outside of the ImageResult is if you are pulling image data out of your database. In this case, you may want to create an overloaded constructor on the ImageResult class that will take a MemoryStream and the ContentType of the file.
Check out the chapter on caching and you will find a workaround to this issue! NET MVC framework called NVelocity. NVelocity is a very stable templating engine that has been around longer than the MVC framework has. NET MVC framework (as we will see). In this particular recipe, we will use NVelocity in a slightly different manner than just wiring in a different view engine. We will use NVelocity to render views directly from a database. This gives us templating abilities for rendering dynamic views, but this could also be used to render the contents of an e-mail, or any other template-driven blob of text.