如何在 c# 中根据如下分组的产品类别显示我的回复

问题描述：

这是我在提供者类中的方法

This is my method in the provider class

public async Task<List<ProductSummary>> GetProductDetails(string pId, bool isSplitVersion)
{
    var response = await dbAccess.GetProductDetailsReport(pId);

    List<ProductSummary> ProdList = new List<ProductSummary>();
    if (isSplitVersion)
    {

        var distinctProductCat = response.GroupBy(x => x.PRODUCT_CATEGORY);
        foreach (var productCategory in distinctProductCat)
        {

            foreach (var item in productCategory)
            {


                ProdList.Add(item);


            }
            return productReportMapper.Map(ProdList);

            


        }

    }
    return productReportMapper.Map(response);
    
}

当 isSplitVersion 为 true 时，产品按产品类别分组，并将分配给 distinctProductCat .(即 category1,category2,category3)我想显示我的响应如下.(响应必须由产品类别分隔)

when the isSplitVersion is true, products are grouped by the product category and will assign to distinctProductCat .(i.e category1,category2,category3)And I want to appear my response as below.(Response has to be separated by the product categories)

    {
    "Value": {
        "category1": [
            {
                ...
                "Product Name": "ABC",
                "Product Category": "category1"
                ...
            }
        ],


       "category2": [
            {
                 ...
                 "Product  Name": "EFG",
                 "Product Category": "category2"
                 ...
            },
            {
                 ...
                 "Product  Name": "XYZ",
                 "Product Category": "category2"
                 ...
            },
            {
                 ...
                 "Product  Name": "SDF",
                 "Product Category": "category2"
                 ...
            }
        ],
     "category3": [
            {
                 ...
                 "Product  Name": "BNV",
                 "Product Category": "category3"
                 ...
            },
            {
                  ...
                 "Product  Name": "DFG",
                 "Product Category": "category3"
                 ...
            }
        ]

    },
    "Formatters": [],
    "ContentTypes": [],
    "DeclaredType": null,
    "StatusCode": 200
}

从我实施的方法来看，我没有得到预期的响应.我如何调整提供者类中的代码以获得上述响应.(目前我的响应中只得到类别 1.我没有得到类别 2 和 3)

From the method that I have implemented, I don't get the expected response. How Can I adjust my code in the provider class to get the response as above.(At present I get only category 1 in my reponse.I don't get category 2 and 3)

感谢任何帮助.

谢谢.

答

你的问题是你正在检查你的第一个 for 循环 (foreach (var productCategory in distinctProductCat)) 仅一次，因为您在第一次运行后返回 - return productReportMapper.Map(ProdList);

Your problem is you are going over your first for loop (foreach (var productCategory in distinctProductCat))only once, cause you are returning just after the first run here - return productReportMapper.Map(ProdList);

在我看来你需要 Dictionary> 而不是 List，我不确定 productReportMapper.Map() 内部会发生什么，如果您根本需要它，因为您没有添加它，但我认为您想做这样的事情:

It seems to me like you need Dictionary<string, List<ProductSummary>> and not List<ProductSummary>, and I am not sure what happens inside productReportMapper.Map(), and if you need it at all, cause you did not add it, but I think you want to do something like this:

...
if (isSplitVersion)
{
   var distinctProductCat = response
      .GroupBy(x => x.PRODUCT_CATEGORY)
      .ToDictionary(x => x.Key, x => x.ToList());

   return productReportMapper.Map(distinctProductCat);
}
...

如何在 c# 中根据如下分组的产品类别显示我的回复

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