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我有一个问题，在那里谈到自定义排序。
我需要根据3个因素对元素进行排序：

1. ID（字符串）
   1.标志（布尔）
   1.日期（日期时间
   小提琴代码示例：https://dotnetfiddle.net/OSicuK
   样本数据记录：

{
            "id": "cbb440a8-fc26-4d30-966c-eba114410c6b",
            "creationDate": "2021-05-25T00:00:00",
            "child": false,
            "parentId": "cbb440a8-fc26-4d30-966c-eba114410c6b"
        },
        {
            "id": "cf70fbef-aa4f-45d3-96ab-3e211c290765",
            "creationDate": "2021-05-27T00:00:00",
            "child": true,
            "parentId": "cbb440a8-fc26-4d30-966c-eba114410c6b"
        },
        {
            "id": "48a82712-3e72-3ca7-a02d-edafd170f0b5",
            "creationDate": "2021-06-17T00:00:00",
            "child": false,
            "parentId": "48a82712-3e72-3ca7-a02d-edafd170f0b5"
        },
        {   (this one should be ealier since creationDate is ealier than one above and both child is set to false)
            "id": "1e4372f9-54dd-45b1-a401-56accbefc936", 
            "creationDate": "2021-05-25T00:00:00",
            "child": false,
            "parentId": "1e4372f9-54dd-45b1-a401-56accbefc936"
        },
        {
            "id": "cf70fbef-aa4f-45d3-96ab-3e211c290765",
            "creationDate": "2021-05-27T00:00:00",
            "child": true,
            "parentId": "1e4372f9-54dd-45b1-a401-56accbefc936"
        },
        {
            "id": "82d7ea62-8f30-4bfd-be27-eb79c0f5e9e9",
            "creationDate": "2021-05-27T00:00:00",
            "child": true,
            "parentId": "1e4372f9-54dd-45b1-a401-56accbefc936"
        },
        {
            "id": "48a82712-3e72-3ca7-a02d-edafd170f0b5",
            "creationDate": "2021-06-17T00:00:00",
            "child": true,
            "parentId": "1e4372f9-54dd-45b1-a401-56accbefc936"
        }

记录需要从最早的父记录到最新的父记录排序，当子标记设置为假时，记录需要位于具有相同parentId但子标记设置为真的所有记录之前。
我试过了：
return documents .OrderBy(x => x.parentId) .ThenBy(x => x.child) .ThenBy(x => x.creationDate);
很遗憾，CreationDate排序不正确。
先谢了!