How To Retrieve The Value Of Last Saved Identity Column ?

Hello Everyone,

I'm using Nhibernate and SQL Server 2005.

I have two tables something like this :
Table : Account
AccountID
UserName
Password

Table : Address
AddressID
AccountID
Line1
Line2
State

My NHibernate mapping file looks like this :
For Table Account
<id name="ID" type="long" column="AccountID" access="property">
<generator class="identity"/>
</id>

<property name="Username" column="Username" type="String" />
<property name="Password" column="Password" type="String" />

For Table : Address
<id name="ID" type="long" column="AddressID" access="property">
<generator class="identity"/>
</id>

<many-to-one name="Account" column="AccountID" class="..., ...." fetch="select"/>
<property name="Line1" column="Line1" type="String" />
<property name="Line2" column="Line2" type="String" />

My Problem is it does entry in the Account table perfectly, but when it comes to do entry in Address Table it says AccountID can't be null, I'm wondering shouldn't it pick it up from the Account table as I'm passing in that object.

For the Workaround I was thinking maybe I can get the identity of the last entry saved and somehow save it to the other table myself.

I was hoping if someone can please help me.