How to add entity framework 6 provider in code?

c# connection-string entity-framework-6


I use Entity Framework 6 in a C# application and it works perfectly. When creating the Model, the app.config is generated with all the necessary configuration. Now I don't like having stuff in the app.config, so I use the connection string builder. I succeeded in removing everything out of the app.config file except of this:

    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />

If I remove this, it does not work. So how can I translate that config into c# code? How to I do that? I've looked at the code-based configuration ( however, it did not help.

My partial class that creates the connection string looks like that:

public partial class LogEntities
        public LogEntities(string serverName)
            : base(GetConnectionString(serverName))

        public static string GetConnectionString(string serverName)
            // Specify the provider name, server and database.
            const string databaseName = "_LOG";

            // Initialize the connection string builder for the underlying provider.
            SqlConnectionStringBuilder sqlBuilder = new SqlConnectionStringBuilder
                DataSource = serverName,
                InitialCatalog = databaseName,
                IntegratedSecurity = true,
                MultipleActiveResultSets = true

            // Initialize the EntityConnectionStringBuilder.
            System.Data.EntityClient.EntityConnectionStringBuilder entityBuilder = new System.Data.EntityClient.EntityConnectionStringBuilder();
            entityBuilder.Provider = "System.Data.SqlClient";

            // Set the provider-specific connection string.
            entityBuilder.ProviderConnectionString = sqlBuilder.ToString();

            // Set the Metadata location.
            entityBuilder.Metadata = @"res://*/myproject.LogModel.csdl|res://*/myproject.LogModel.ssdl|res://*/myproject.LogModel.msl";

            return entityBuilder.ConnectionString;

Thanks in advance for any help.

11/6/2013 3:33:24 PM

Popular Answer

In EF6 you can use Code Base configuration. Take a look at this article for more details. It shows how to set the default connection factory (use the SetDefaultConnectionFactory method). To set the provider you use the SetProviderServices method.

7/3/2017 9:48:10 PM

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