/// <summary>
/// Filters the specified employee.
/// </summary>
/// <param name="employee">The employee.</param>
/// <returns></returns>
public IEnumerable <Employee> Filter(Employee employee)
{
if (employee.FullName == null)
{
employee.FullName = "";
}
if (employee.Account == null)
{
employee.Account = "";
}
if (employee.Group == null)
{
employee.Group = "";
}
return(employeeDao.Filter(employee));
}