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Nhibernate bind to DataGridView
<class name="Employee" table="emplyees" lazy="true">
    <id name="id">
      <generator class="increment"></generator>
    </id>

    <property name="first_name" not-null="true"></property>
    <property name="last_name" not-null="true"></property>
    <property name="login" not-null="true"></property>
    <property name="sid"></property>
</class>

Employee new_employee =
    new Employee() { first_name = "test1", last_name = "test3", login = "login1" };
session.Save(new_employee);
session.Commit();

transaction = session.BeginTransaction();
employees = (from e in session.Linq<Employee>() select e).ToList<Employee>();
this.employeeBindingSource.DataSource = employees;


private void employeeDataGridView_UserAddedRow(object sender, DataGridViewRowEventArgs e)
{
Employee new_employee = (Employee)this.employeeBindingSource.Current;
session.Save(new_employee);
}