Pass connection string to code-first DbContext

A little late to the game here, but another option is:

public class NerdDinners : DbContext
{
    public NerdDinners(string connString)
    {
        this.Database.Connection.ConnectionString = connString;
    }
    public DbSet<Dinner> Dinners { get; set; }
}

After reading the docs, I have to pass the name of the connection string instead:

var db = new NerdDinners("NerdDinnerDb");