Saturday, October 31, 2009

Hack 29. Add Support for Nonstandard File Extensions











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Hack 29. Add Support for Nonstandard File Extensions





Use the VSTweak power toy to tell Visual Studio

how to handle file types that aren't supported by

default
.







Creating custom

file extensions allows you to specify your own file extensions that

will be treated like another already existing file type in Visual

Studio. This is very useful if you have created a custom file type

for your application but want Visual Studio to treat it like a

regular file.





To create and manage custom file extensions, you can use a power toy

called VSTweak. The VSTweak power toy is one of the more useful power

toys for Visual Studio and is the subject of a number of different

hacks in this book. The VSTweak power toy can be downloaded at

http://workspaces.gotdotnet.com/vstweak.





Once you have installed and launched VSTweak, click on the File

Extensions Manager tab, shown in Figure 4-16.







Figure 4-16. File Extensions Manager







To add a new custom extension, you simply need to enter the custom

extension in the Define Extension text box, select what kind of file

this extension should be treated as in the Treat As drop-down, and

then click the Add button shown in Figure 4-16. The

extension .cxm will be added to Visual Studio

and treated like an .xml file.





You can also remove custom extensions by selecting the extension from

the drop-down and clicking the Delete button. Changes made to custom

extensions are made for all users of your

machine, not just you.









To edit custom file extensions, you must be logged in as

administrator on your machine, or you must launch the VSTweak

application by right-clicking on it and choosing Run As, then log in

using an administrator account.








Managing custom file extensions is very useful, especially when

creating custom file types or when hacking Visual Studio to do

something it was never intended to do (such as adding the ability to

edit .php files [Hack #12] ).

















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