WEB API没有获取参数

Question

我以下面给出的方式调用web api

 $scope.workOrder = {};
 $scope.workOrder.assignedName = "Dummy"
 dbSrvc.getDatFromService('../../api/DispatchNotifyService/GetWorkOrders', $scope.workOrder).then(function (result) {
    $scope.workOrderList = result.data;
    $scope.workOrderNumberLabel = $scope.workOrderList[0].workOrderNumber;
    $scope.workOrderpriority = $scope.workOrderList[0].priority;
    $scope.getEmployeeDetailsDO(null);
});

调用API但参数未获取值.Its值始终为null。 我使用角度js来调用Web API。请帮帮我。

这是我的服务器代码。

   [HttpGet]
    public ICollection<WorkOrder> GetWorkOrders(WorkOrder workOrder)
    {
        this.Initialize();
        List<string> lstWorkOrder = JsonConvert.DeserializeObject<List<string>>(this.sessionObject.WorkOrderDetails);
        ICollection<WorkOrder> workOrderCollection = new Collection<WorkOrder>();

        lstWorkOrder.ToList().ForEach(delegate(string wo)
        {
            WorkOrder workOrderDetails = JsonConvert.DeserializeObject<WorkOrder>(wo);
            workOrderCollection.Add(workOrderDetails);
        });

        return workOrderCollection;
    }