public IEnumerable <EmployeeDto> GetEmployeeList() { List <EmployeeDto> employees = new EmployeeRepo().GetEmployees().Select(e => e.ToDto()).ToList(); employees.AddRange(employees); employees.AddRange(employees); employees.AddRange(employees); //if (this.department == "Management") // employees = this.management; //if (this.department == "Financial") // employees = this.financial; //if (this.department == "Sales") // employees = this.sales; foreach (var employee in employees) { yield return(employee); } }