public void UsingRawAdoWithDF() {
      string dsKeyName = "NorthwindIBEntityManager";
      
      //Extract EdmKey
      EdmKey edmKey = GetEdmKey(dsKeyName);
      
      //Create raw ADO.Net Db connection using EdmKey
      System.Data.IDbConnection aConnection = CreateDbConnection(edmKey);

      //Execute some Sql commands
      ExecuteSqlCommand(aConnection);
    }

    private EdmKey GetEdmKey(string dsKeyName) {
      var mgr = new NorthwindIBEntityManager();
      EdmKey testEdmKey = EdmKey.LocateEdmKey(dsKeyName);
      var dataSourceKey = mgr.DataSourceResolver.GetDataSourceKey(dsKeyName);

      //If this is done on the client, it will return a ClientEdmKey
      //If this is done on the server, it will return an EdmKey
      //Ideally, you want to do this on the server
      ClientEdmKey clientEdmKey = (ClientEdmKey)dataSourceKey;
      EdmKey edmKey = new EdmKey(clientEdmKey);

      return edmKey;
    }

    private System.Data.Common.DbConnection CreateDbConnection(EdmKey edmKey) {
      var providerName = edmKey.DbProviderName;
      var connectionString = edmKey.DbConnectionString;
      var providerFactory = System.Data.Common.DbProviderFactories.GetFactory(providerName);
      System.Data.Common.DbConnection connection = providerFactory.CreateConnection();
      connection.ConnectionString = connectionString;
      return connection;
    }

    private void ExecuteSqlCommand(System.Data.IDbConnection aConnection) {
      const String sqlSelect = "select UserName from dbo.[User] where FirstName = 'Admin'";
      const String sqlUpdate = "update dbo.[User] set UserName={0} where FirstName = 'Admin'";
      aConnection.Open();
      using (aConnection) {
        System.Data.IDbCommand aCommand = CreateDbCommand(aConnection);
        aCommand.CommandText = sqlSelect;
        System.Data.IDataReader aDataReader = aCommand.ExecuteReader();
        if (!aDataReader.Read()) {
          throw new IdeaBladeException("Unable to locate record");
        }
        Object tmp = aDataReader.GetValue(0);
        aDataReader.Close();

        //Execute sqlUpdate
        aCommand.CommandText = String.Format(sqlUpdate, "'adminxxx'");
        int numOfRowsAffected = aCommand.ExecuteNonQuery();
      }
    }

    private System.Data.Common.DbCommand CreateDbCommand(System.Data.IDbConnection connection) {
      if (connection.State != System.Data.ConnectionState.Open) connection.Open();
      System.Data.IDbCommand command = connection.CreateCommand();
      try {
        return (System.Data.Common.DbCommand)command;
      } catch {
        throw new IdeaBladeException("Unable to cast a DbCommand object from an IDbCommand for current connection");
      }
    }