Configuring EF and Npgsql for code first
Your context doesn't appear to be using your connection string. Do that with the constructor on your context:
public class BloggingEntities : DbContext{ public BloggingEntities() : base("PostgresDotNet") { } public DbSet<Blog> Blogs { get; set; } public DbSet<Post> Posts { get; set; } protected override void OnModelCreating(DbModelBuilder modelBuilder) { // PostgreSQL uses the public schema by default - not dbo. modelBuilder.HasDefaultSchema("public"); base.OnModelCreating(modelBuilder); }} http://fdevel.blogspot.com/2013/12/npgsql-with-entity-framework-6.html