I'm a programmer who has never really used .dll files. Of cause, when I need 3rd party software, such as a graphics library, a library to help me create graphs etc. I do add the references/ddl files to my program and use them in my code.
Also, it seems like you can use .dll for a lot of different things, so I'd like the topic to concentrate on C#.
Right now I am working on a sanitizing library(?) (I think that is the correct term), which will be full of relevant methods that can sanitize variables in all sorts of different ways.
What I want to know is:
would there be any advantage to:
1) Write the methods to class library -> compile/build it -> add the library as a reference to the program - which would need to sanitize some variables ?
Or would it be exactly the same if I where to:
2) Create a new SanitizeClass in the program -> add all the sanitize methods -> call the methods from the SanitizeClass in the different classes in the program that needs to sanitize variables
In general, I also want to know when it is an advantage to use compiled class libraries. I'm thinking of speed, security, all of it.
Could anyone enlightenment me? :)
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The key question is: does it make sense for more than one application to use the type? If so, it should be in a class library. If not, you may still want to put it in a class library just for the sake of separation (e.g. have one assembly per tier in an n-tier solution), but you could just put it in your application.
If your sanitization is general-purpose, then putting it in a class library would definitely be the right move.
I know of people who write almost no code in executable applications, and put almost everything in class libraries - so the application basically just wraps the class libraries. I don't tend to go quite that far myself...
The first thought that comes to mind is re usability. Will this sanitize library be used ever outside of the application you're currently working on? If you are, then you don't want to have to reference an exe in the future, for that you want to build a DLL file (possibly even strong name it and GAC it) and then just reference that in the future.
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