{"type":"rich","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkagasu.hatenablog.com%2Fentry%2F2023%2F02%2F26%2F142744\" title=\"ASP.NET\u3067null\u304c\u660e\u793a\u7684\u306b\u6307\u5b9a\u3055\u308c\u305f\u304b\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5 - \u5099\u5fd8\u9332\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"kagasu","height":"190","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/k/kagasu/20230226/20230226194416.png","blog_title":"\u5099\u5fd8\u9332","published":"2023-02-26 14:27:44","categories":["ASP.NET","C#"],"author_url":"https://blog.hatena.ne.jp/kagasu/","provider_name":"Hatena Blog","blog_url":"https://kagasu.hatenablog.com/","title":"ASP.NET\u3067null\u304c\u660e\u793a\u7684\u306b\u6307\u5b9a\u3055\u308c\u305f\u304b\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5","width":"100%","description":"\u2160. \u306f\u3058\u3081\u306b \u30bf\u30a4\u30c8\u30eb\u306e\u901a\u308a\u300cASP.NET\u3067null\u304c\u660e\u793a\u7684\u306b\u6307\u5b9a\u3055\u308c\u305f\u304b\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u300d\u3067\u3059\u3002 \u2161. \u524d\u63d0\u6761\u4ef6 .NET 7.0\u4ee5\u4e0a \u2162. \u624b\u9806 1. \u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u304f OptionalConverter.cs // https://stackoverflow.com/questions/71024060 using System.Reflection; using System.Text.Json; using System.Text.Json.Serialization; public readonly struct Optional<T> { public Optional(T? \u2026","url":"https://kagasu.hatenablog.com/entry/2023/02/26/142744","provider_url":"https://hatena.blog"}