Customer.cs

    public class Customer        {               public virtual Guid ID { get; set; }               public virtual string Name { get; set; }               public virtual string City { get; set; }        }

Customer.hbm.xml

<?xml version="1.0" encoding="utf-8" ?><hibernate-mapping  xmlns="urn:nhibernate-mapping-2.2" assembly="NHi.Domain"  namespace="NHi.Domain.Entities">    <class name="Customer" table="Customer">        <id name="ID" column="ID" type="Guid" >            <generator class="assigned" />        </id>        <property name="Name" type="string">            <column name="Name" sql-type="varchar(20)" not-null="false" />        </property>        <property name="City" type="string">            <column name="City" sql-type="nvarchar(500)" not-null="false" />        </property>    </class></hibernate-mapping>

hibernate.cfg.xml

<?xml version="1.0" encoding="utf-8"?><hibernate-configuration  xmlns="urn:nhibernate-configuration-2.2" >    <session-factory name="NHi.Test">        <property name="connection.driver_class">NHibernate.Driver.SqlClientDriver</property>        <property name="connection.connection_string">server=local;database=NHiDemo;uid=sa;pwd=123456;</property>    <property name="dialect">NHibernate.Dialect.MsSql2008Dialect</property>    <property name="hbm2ddl.auto">update</property>  <!--貌似只能添加列，对删除列，修改类型/长度不起作用，待续。。。-->      <mapping assembly="NHi.Domain"/>    </session-factory></hibernate-configuration>

BaseTest.cs

public  class BaseTest        {                protected ISessionFactory sessionFactory;                [SetUp]                public void Init()                {                        var cfg = new NHibernate.Cfg.Configuration().Configure("Config/hibernate.cfg.xml");                        sessionFactory = cfg.BuildSessionFactory();                }        }

CustomerTest.cs

[TestFixture]public class CustomerTest:BaseTest{          [Test]        public void Add()        {                object o = null;                 using (ISession session = sessionFactory.OpenSession())                {                        var customer = new NHi.Domain.Entities.Customer()                        {                                ID = Guid.NewGuid(),                                Name = "your name",                                City = "my city"                        };                         o=session.Save(customer);                        session.Flush();                }                 Assert.NotNull(o);        }}