我有以下课程:
public class OrderArticlesAdapter : RecyclerView.Adapter
{
public List<OrderArticleViewModel> listOfOrderArticles;
.....
.....
//constructor
public OrderArticlesAdapter(List<OrderArticleViewModel> orderArticles, ....., .....)
{
listOfOrderArticles = orderArticles;
......
}
}
我希望该类不仅可以与OrderArticleViewModel
的列表一起使用,而且还可以与类型Invoices
的列表和任何其他类型一起使用。 OrderArticleViewModel
类如下所示:
public class OrderArticleViewModel
{
public string ArticleId { get; set; }
public string LotId { get; set; }
public string ArticleName { get; set; }
public string PriceDiscount { get; set; }
public string ArticlePrice { get; set; }
public string ArticleQuantity { get; set; }
public string ArticleTotalPrice { get; set; }
public string Barcode { get; set; }
public string ExpireDate { get; set; }
public string LotName { get; set; }
public string ArticlePriceAfterDiscount
{
get
{
decimal priceDiscount;
if (!Decimal.TryParse(PriceDiscount, out priceDiscount))
{
priceDiscount = 0;
}
decimal articlePrice = Convert.ToDecimal(ArticlePrice);
decimal discountAmount = Math.Round(articlePrice * (priceDiscount / 100), 4);
decimal articlePriceAfterDiscount = articlePrice - discountAmount;
return articlePriceAfterDiscount.ToString();
}
}
}
Invoices
类如下所示:
public class Invoices
{
public string ArtId { get; set; }
public string Name { get; set; }
public string Quantity { get; set; }
public string Price { get; set; }
public string Sum { get; set; }
public string Discount { get; set; }
public string PriceWodiscount { get; set; }
public string Id { get; set; }
}
类ArticleId
中的ArticleName
,ArticleQuantity
,PriceDiscount
,ArticlePrice
,Discount
,ArticlePriceAfterDiscount
,OrderArticleViewModel
对应于属性ArtId
,Name
,Quantity
,Discount
,Price
,Sum
来自类Invoices
。如何使OrderArticlesAdapter
构造函数能够接收OrderArticleViewModel
或Invoices
或任何其他类型的通用列表,而又不破坏已经使用OrderArticlesAdapter
实例的代码的功能?
参考方案
创建另一个构造函数,您可以在其中将发票清单转换为ArticleViewModel清单:
public class OrderArticlesAdapter : RecyclerView.Adapter
{
public List<OrderArticleViewModel> listOfOrderArticles;
public OrderArticlesAdapter(List<OrderArticleViewModel> orderArticles, ....., .....)
{
listOfOrderArticles = orderArticles;
}
public OrderArticlesAdapter(List<Invoice> invoices)
{
listOfOrderArticles = invoices.Select(MapToArticleVM).ToList();
}
private OrderArticleViewModel MapToArticleVM(Invoice invoice)
{
return new OrderArticleViewModel
{
ArticleId = invoice.ArtId,
// ...
};
}
}
请注意,结果列表将缺少某些属性,例如,因为Invoice
不包含Barcode
。
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