Choosing between XML data provider and SQL with Ninject from a config file

I need a general Ninject usage advice.

I have an Interface IDataProvider and two implementations XmlProvider:IDataProvider and OracleSqlProvider:IDataProvider.

I want to use Ninject to instantiate an interface implementation, given that it is defined somehow in app.config.

Questions:

1. Which is the best way to define what particular implementation to user in app.config?
2. Is there an automatic way for Ninject 2 to read the preferred bindings from code?
3. What if my XML provider needs no parameters in the constructor, whereas SQL needs a connection string.开发者_C百科 How does this affect my declaration in app.config and further instantiation in Ninject Module?

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In my opinion the best way in your sceanrio is to implement a Provider that gets the information from the app.config and returns the appropriate provider. This also allows to pass the connection string.

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See Ninject.Extensions.Xml, i think that is what you need.