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views:

741

answers:

1
Q: 

How do I create a generic DataContext factory?

I'm building a generic Repository<T> class that supports Linq to SQL, and I'd like to use a factory pattern for the DataContext, because currently I have to pass the correct context to the constructor.

Does anybody know how to determine the correct DataContext type for T, where T is a Linq to Sql Table?

+2  A: 

You do not really need to.

Just take in a DataContext and you can access the tables using GetTable<T>().

Denis Troller  2009-05-28 16:55:24
So what is the purpose of the FooDataContext class that gets generated? Is it just so you don't have to specify the type in a generic method?
Adam Lassek  2009-05-28 16:57:57
No, the FooDataContext that gets generated also has properties that represent the table(s) in the database. That allows you to do something like myFooDataContext.MyTable....
BFree  2009-05-28 17:02:01
Its purpose is exactly that. It allows you to use a meaningful name when using it and provides intellisense. If you look into the generated code, all those properties do is call GetTable<T>().
Denis Troller  2009-05-28 17:31:56

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