Install-Package EntityFramework Install-Package Npgsql.EntityFramework app.config <?xml version=”1.0″ encoding=”utf-8″?> <configuration> <configSections> <section name=”entityFramework” type=”System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089″ requirePermission=”false” /> </configSections> <entityFramework> <defaultConnectionFactory type=”Npgsql.NpgsqlFactory, Npgsql”> <parameters> <parameter value=”mssqllocaldb” /> </parameters> </defaultConnectionFactory> <providers> <provider invariantName=”System.Data.SqlClient” type=”System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer” /> <provider invariantName=”Npgsql” type=”Npgsql.NpgsqlServices, Npgsql.EntityFramework” /> </providers> </entityFramework> <system.data> <DbProviderFactories> <add name=”Npgsql Data Provider” invariant=”Npgsql” support=”FF” description=”Data Provider […]