Cant query sybase with Nhibernate

Have started to use NHibernate on sybase ASE data, problem am facing is when I load entity I ge开发者_JAVA技巧t below error

"System.IndexOutOfRangeException : Invalid index 0 for this OdbcParameterCollection with Count=0."

This is how I configure session

properties["connection.provider"] = "NHibernate.Connection.DriverConnectionProvider";
properties["connection.driver_class"] = "NHibernate.Driver.OdbcDriver";
properties["connection.connection_string"] = @"Driver={Adaptive Server Enterprise};server=;port=; db=;uid=;pwd=";
properties["dialect"] = "NHibernate.Dialect.SybaseASE15Dialect";  

And object mapping

  <class name="MenuGroup" table="MENU_GROUP">
    <id name="Id" column="id" type="Int32">
      <generator class="identity" />
    </id>    
    <property name="Name" column="name" type="String" length="100" not-null="true" />
    <property name="Position" column="position" type="Int32" />  
  </class>

and If I do

 var menuGroup = _session.Get<Menu.MenuGroup>(1);

I get error

NHibernate.Exceptions.GenericADOException : could not load an entity: [DomainModel.Menu.MenuGroup#1][SQL: SELECT menugroup0_.id as id1_0_, menugroup0_.name as name1_0_, menugroup0_.position as position1_0_ FROM MENU_GROUP menugroup0_ WHERE menugroup0_.id=?] ----> System.IndexOutOfRangeException : Invalid index 0 for this OdbcParameterCollection with Count=0.

I solved this problem by creating my own connection driver

using NHibernate.Driver;

namespace Framework.Persistency
{
    public sealed class MySybaseSQLAnywhereDriver : SybaseSQLAnywhereDriver
    {
        public override bool UseNamedPrefixInSql
        {
            //default is false
            get { return true; }
        }

        public override bool UseNamedPrefixInParameter
        {
            //default is false
            get { return true; }
        }

        public override string NamedPrefix
        {
            //default is string.Empty
            get { return ":"; }
        }
    }
}

And use it in the NHibernate config:

configDictionary.Add(Environment.ConnectionDriver, typeof(MySybaseSQLAnywhereDriver).AssemblyQualifiedName);

moving away from odbc helped, changed the config to

properties["connection.provider"] = "NHibernate.Connection.DriverConnectionProvider"; properties["connection.driver_class"] = "NHibernate.Driver.SybaseAseClientDriver"; properties["connection.connection_string"] = @"server=*;port=5000; db=;user id=*;password=;"; properties["dialect"] = "NHibernate.Dialect.SybaseASE15Dialect";