DatabaseHooks.cs

[BeforeScenario]
public void BeforeScenario()
{
    var tablesToClean = new[] {"OrderItems", "Orders", "Audit"};
    using (var connection = new SqlConnection(ConfigurationManager.ConnectionStrings["DB"].ConnectionString))
    {
        foreach (var table in tablesToClean)
        {
            connection.Open();
            using (var cmd = new SqlCommand("TRUNCATE TABLE " + table, connection))
            {
                cmd.ExecuteNonQuery();
            }
        }
    }
}