public override void InitSample(string connectionString)
        {
            // parse connection string to get provider name and provider connection string

            var csb = new EntityConnectionStringBuilder();

            csb.ConnectionString = connectionString;

            // create schema connection
            //schemaConnection = EntityStoreSchemaGenerator.CreateStoreSchemaConnection(csb.Provider, csb.ProviderConnectionString);
            //schemaConnection.Open();

            context = new Store.SchemaInformation(schemaConnection);
        }
        public override void TearDownSample()
        {
            if (context != null)
            {
                context.Dispose();
                context = null;
            }

            if (schemaConnection != null)
            {
                schemaConnection.Dispose();
                schemaConnection = null;
            }

            base.TearDownSample();
        }