使用GROUPBY将c#列表转换为json

我已经将datatable转换为c#list，我需要将该列表转换为json格式，但是json响应是一行一行地出现的。我需要不重复id的json格式，如下所示

ri是包含数据的列表类型

var listResp = r1.GroupBy(x => x.StoreId).SelectMany(x=>x).ToList();

此代码将数据表转换为列表

public static List<AllInvoicesModel> InvoiceDataList(System.Data.DataTable dataTable)
{
    var retList = new List<AllInvoicesModel>();
    for (int i = 0; i < dataTable.Rows.Count; i++)
    {
        var row = dataTable.Rows[i];

        var temp = new AllInvoicesModel()
        {
            StoreId = Convert.ToInt32(row["StoreId"]),
            storyname= Convert.ToString(row["storyname"]),
        };

        retList.Add(temp);
    }

    return retList;
}

但是我需要这种格式的响应，并将单独的storeid分组

{
    [
    "storedId":0,
    "isSelected":true,
    "invoiceslist":[
        {
            "storeName": "sdfsfd",
            "partyCode": "82"
        },
        {
            "storeName": "Ansdf",
            "partyCode": "827"
        }
        ],
    "storedId":1,
    "isSelected":true,
    "invoiceslist":[
        {
            "storeName": "sdfsfd",
            "partyCode": "82"
        }
        ]
    ]
}

---

有一个LINQ扩展名

.GroupBy

，可以为您实现这一点

var grouped = retList
    .GroupBy(r => { r.storedId, r.isSelected })
    .Select(g => new {
        storedId = g.Key.storedId,
        isSelected = g.Key.isSelected,
        invoicesList = g.Select(i => new {
            storeName = i.storeName,
            partyCode = i.partyCode
        })
    ));

---

我试图为您修复问题格式，但您的JSON并不完全有效。你能更新它并修改格式吗？谢谢请注意，JSON对象中没有键的直接数组是无效的。

var grouped = retList
    .GroupBy(r => { r.storedId, r.isSelected })
    .Select(g => new {
        storedId = g.Key.storedId,
        isSelected = g.Key.isSelected,
        invoicesList = g.Select(i => new {
            storeName = i.storeName,
            partyCode = i.partyCode
        })
    ));