public ActionResult NavFirst() { ApprovalModel approvalModel; approvalService = new ApprovalService(); approvalModel = approvalService.NavFirst(); if (approvalModel != null) { approvalModel._FormMode = FormModeEnum.Edit; } if (approvalModel == null) { //approvalModel = approvalService.GetNewModel(); throw new Exception("[VALIDATION]-Data not exists"); } return(PartialView(VIEW_FORM_PARTIAL, approvalModel)); }