.net - 在循环中构建 IEnumerable

Question

类(class):

public class CalculateDiscountsFees
  {

    public IEnumerable<CalculateDiscountsFeesItem> Items { get; set; }
  }

public class CalculateDiscountsFeesItem
{

    public int RequestID { get; set; }


    public CalculateDiscountsFeesSale Sale { get; set; }


    public DateTime PaymentDate { get; set; }
}

public class CalculateDiscountsFeesSale
{
    public Guid UID { get; set; }

    public CalculateDiscountsFeesSaleType Type { get; set; }
}

这些是我需要使用的 sdk 中的类。我需要构建CalculateDiscountsFees，然后将其传回sdk。但是我在做这件事时遇到了麻烦。我想要的方法是在循环中创建一个CalculateDiscountsFeesItem，然后尝试将其添加到CalculateDiscountsFees 中。这不起作用，因为 ienumerable 没有添加。

我尝试创建扩展模块来创建我自己的添加，但未能使其正常工作。

这是我希望在理想世界中工作的代码。希望这能让您了解我正在尝试做什么。

       Dim fees As New CalculateDiscountsFees
       Dim sale = New CalculateDiscountsFeesSale
       Dim feesitem = New CalculateDiscountsFeesItem
       Dim id = List.Item(0).UID
       sale.UID = id
       sale.Type = Version2.Sale.CalculateDiscountsFeesSaleType.Invoice
       feesitem.RequestID = 1
       feesitem.PaymentDate = Now()
       feesitem.Sale = sale
       fees.Items.Add( feesitem)
       Dim feeResult = CalculateDiscountsFeesSvc.Execute(companyFile, fees,     credentials)

想知道如何构建CalculateDiscountFees。我尝试创建CalculateDiscountFeesItems 列表，但无法将其获取CalculateDiscountFees 类型。

非常感谢任何建议。现在已经花了一整天的时间来处理它，但没有任何进展。

干杯

Answer 1

构建 CalculateDiscountsFeesItem 列表，然后将该列表分配给 CalculateDiscountsFees 的 Items 属性的实例，如下所示:

Dim fees As New CalculateDiscountsFees
Dim listOfCalculateDiscountsFeesItem As New List(Of CalculateDiscountsFeesItem)

Dim sale As New CalculateDiscountsFeesSale()
Dim id = List.Item(0).UID
sale.UID = id
sale.Type = Version2.Sale.CalculateDiscountsFeesSaleType.Invoice

Dim feesItem  As New CalculateDiscountsFeesItem()
feesitem.RequestID = 1
feesitem.PaymentDate = Now()
feesitem.Sale = sale

listOfCalculateDiscountFeesItem.Add(feesItem)

... 
Repeat above for as many fees items as you need in the list
...

现在，您可以获取 List(OfCalculateDiscountsFeesItem) 并将其分配给 fees.Items 属性，如下所示:

fees.Items = listOfCalculateDiscountFeesItem.AsEnumerable()