Hi all,

I need help
I have two class State and City



public class State
{


private int m_Id;
private string m_State;
private string m_Description


public virtual int Id
{
get
{
return m_Id;
}
set
{
m_Id=value;
}
}

public virtual string State
{
get
{
return m_State;
}
set
{
m_Sate=value;
}
}

public virtual string Description
{
get
{
return m_description
}
set
{
M_description= value;
}
}
}




public class City
{

public City()
{
m_State=new State();
}

private System.Int32 m_Id;
private State m_state;
private System.String m_Name;

public virtual System.Int32 Id
{
get
{
return m_Id;
}
set
{
m_Id=value;
}
}

public virtual State State
{
get
{
return m_State;
}
set
{
m_State = value;
}
}

public virtual System.String Name
{
get
{
return m_Name
}
set
{
m_name= value;
}
}
}





<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.0" >
<class name="RDestribBUS.Sate, RDestribBUS" table="State">
<id name="Id" type="Int32" column="StateId">
<generator class="native" />
</id>
<property name="State" column="State" type="String(2)" />
<property name="Description" column="Description" type="String(40)" />
</class>
</hibernate-mapping>



<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.0" >
<class name="RDestribBUS.City, RDestribBUS" table="City">
<id name="Id" type="Int32" column="CityId">
<generator class="native" />
</id>
<one-to-one name="State" class="RDestribBUS.State, RDestribBUS" />
<property name="Name" column="Name" type="String(40)" />
</class>
</hibernate-mapping>




public System.Boolean saveCity(Cidade oCity
{
ITransaction tx;
try
{
session=factory.OpenSession();
tx=session.BeginTransaction();

session.SaveOrUpdate(oCity);

tx.Commit();
return true;
}


catch (Exception e)
{
//
return false;
}
}




Whem the method saveCidade is called the follow error is displayed
"could not insert: [RDestribBUS.Cidade]"

I dont know what to do....
can you help me? Please....
:)

If you set your log4net logging level to DEBUG you'll get a whole lot of debug data. When your exception is thrown you should be able to see all of the inner exceptions that are thrown including the ADO.NET exception which should detail the reason the database refused to insert your record.

Cheers,

Symon.

How can i use log4net ?

Configuring log4net Logging
For even more information, go to log4net website...