Add a DbProviderFactory without an App.Config

Question

I am using DbProviderFactories in my data layer (based on Entity Framework) and am using SQLite for my database, but I don\'t have to have a App.Config to have the following

Answer 1

Update for EF 6.0+

You can add a DbProviderFactory by registering a IDbDependencyResolver and resolving for the type DbProviderFactory. An example of this is below:

static class Program
{
    [STAThread]
    static void Main()
    {
        System.Data.Entity.DbConfiguration.Loaded += (_, a) => {
            a.AddDependencyResolver(new MyDependencyResolver(), true);
        };  

        Application.Run(new Form1());
    }
}

class MyDependencyResolver : System.Data.Entity.Infrastructure.DependencyResolution.IDbDependencyResolver {

    public object GetService(Type type, object key) {

        // Output the service attempting to be resolved along with it's key 
        System.Diagnostics.Debug.WriteLine(string.Format("MyDependencyResolver.GetService({0}, {1})", type.Name, key == null ? "" : key.ToString()));

        if (type == typeof(System.Data.Common.DbProviderFactory)) {

            // Return whatever DbProviderFactory is relevant
            return new MyDbProviderFactory(); 

        }else if(type == typeof(System.Data.Entity.Infrastructure.IProviderInvariantName) && key != null && key == "MyDbProviderFactory"){

            // Return the Provider's invariant name for the MyDbProviderFactory
            return new MyProviderInvariantName();

        }

        return null;
    }

    public IEnumerable