Expression example

x =>
    (
        (True Or value(System.String[]).Contains(x.CompanyCode))
        OrElse
        (
            (
                (
                    (
                        (
                            (x.SubmittedById == Convert(value(EmployeePortal.Web.Controllers.RequisitionsController).UserId))
                            OrElse
                            (x.RequiredById == Convert(value(EmployeePortal.Web.Controllers.RequisitionsController).UserId))
                        )
                        AndAlso IIF(
                                        (
                                            value(EmployeePortal.Web.Controllers.RequisitionsController+<>c__DisplayClassf).param.EmployeeId != null
                                        ),
                                        (x.RequiredById == value(EmployeePortal.Web.Controllers.RequisitionsController+<>c__DisplayClassf).param.EmployeeId), True
                                    )
                    )
                    AndAlso IIF(
                                    (value(EmployeePortal.Web.Controllers.RequisitionsController+<>c__DisplayClassf).param.StatusCode != null),
                                    (x.StatusCode == value(EmployeePortal.Web.Controllers.RequisitionsController+<>c__DisplayClassf).param.StatusCode),
                                    True)
                )
                AndAlso IIF(
                                (value(EmployeePortal.Web.Controllers.RequisitionsController+<>c__DisplayClassf).param.DateRange != null),
                                (
                                    (x.CreatedDate <= x.CreatedDate)
                                    AndAlso (Convert(x.CreatedDate) <= value(EmployeePortal.Web.Controllers.RequisitionsController+<>c__DisplayClassf).param.ToDate)),
                                    True
                            )
            )
            AndAlso IIF(
                            Not(IsNullOrEmpty(value(EmployeePortal.Web.Controllers.RequisitionsController+<>c__DisplayClassf).param.sSearch)),
                            (
                                x.Code.ToLower().Contains(value(EmployeePortal.Web.Controllers.RequisitionsController+<>c__DisplayClassf).param.sSearch.ToLower())
                                OrElse
                                x.RequiredBy.Name.ToLower().Contains(value(EmployeePortal.Web.Controllers.RequisitionsController+<>c__DisplayClassf).param.sSearch.ToLower())
                            ), True
                        )
        )
    )