平成最後となったC#アドベントカレンダー…
皆で全部埋められるように頑張りましょう！
初心者から上級者まで書いていってください。

その1は以下です。
https://qiita.com/advent-calendar/2018/c-sharp

過去のC#アドカレは以下です。
2017
https://qiita.com/advent-calendar/2017/csharp
2016
https://qiita.com/advent-calendar/2016/csharp

SunSunday	MonMonday	TueTuesday	WedWednesday	ThuThursday	FriFriday	SatSaturday
25 25	26 26	27 27	28 28	29 29	30 30	@lobin-z0x50 引数の型を何でも List にしちゃう奴にそろそろ一言いっておくか Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin
@matarillo C#クイズとその解説 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@masanori-_-msl 【C#】readonly と ReadOnlyCollection Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@yaegaki [C#]async/awaitとUniRx.Asyncの実装を追う Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@sh1ch 来年からの「新しい元号」C#ネタです Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@RyotaMurohoshi 【C#】メソッドのオーバライド、返値型を元の型の派生型にできない。【covariant return types】 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@masanori-_-msl 【C#】Queueで遊ぶ Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@sugimomoto CData ADO.NET Provider が .NET Coreに対応したので、試しにXamarin サンプルアプリ を Dynamics 365 のタスク管理アプリにしてみる Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin
@ikihiki AssemblyLoadContext Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@rim_0720 Visual Studio 2019 Previewをダウンロードしたので書きます。 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@sh1ch WPF OxyPlot の使いかたの基本まとめ Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@yoship1639 【C#】パスワードを動的生成しローカルデータ管理の安全性を高めてみる Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@kuangyujing 25行でC#のオブジェクト指向がわかった気になる Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@masanori-_-msl 自動実装プロパティの話 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@4_mio_11 C#で学ぶダックタイピング Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin
@gushwell C#リフレクションTIPS 55連発 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@yoship1639 【C#】26行でライフゲームを書いてみる（コンソール表示可能） Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@skitoy4321 非同期外部プロセス起動で標準出力を受け取る際の注意点 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@MasanoriIwakura 平成と共に振り返るC#の歴史 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@kyohmizu 【C#】ショートコード・テクニック Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@hiron2225 ジェネリクス使ってFluentなインターフェイスを作ってみる Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@rim_0720 .NET Coreの自己完結型(self-contained app)にするとファイルサイズはどれだけ増加するのか？ Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin
@hatsunetsu7 C# SUPER FAST MICRO ORMapper Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@proprogrammer0 いいからBlazorをさわるんだ Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	@Naot-Cocoa Unityゲーム開発で役立つインタフェース活用例 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after November 1 of the year can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed tothe terms of use CancelJoin	26 26	27 27	28 28	29 29

1. 

   @lobin-z0x50

   引数の型を何でも List にしちゃう奴にそろそろ一言いっておくか

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2. 

   @matarillo

   C#クイズとその解説

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3. 

   @masanori-_-msl

   【C#】readonly と ReadOnlyCollection

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4. 

   @yaegaki

   [C#]async/awaitとUniRx.Asyncの実装を追う

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5. 

   @sh1ch

   来年からの「新しい元号」C#ネタです

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6. 

   @RyotaMurohoshi

   【C#】メソッドのオーバライド、返値型を元の型の派生型にできない。【covariant return types】

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7. 

   @masanori-_-msl

   【C#】Queueで遊ぶ

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8. 

   @sugimomoto

   CData ADO.NET Provider が .NET Coreに対応したので、試しにXamarin サンプルアプリ を Dynamics 365 のタスク管理アプリにしてみる

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9. 

   @ikihiki

   AssemblyLoadContext

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10. 

    @rim_0720

    Visual Studio 2019 Previewをダウンロードしたので書きます。

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11. 

    @sh1ch

    WPF OxyPlot の使いかたの基本まとめ

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12. 

    @yoship1639

    【C#】パスワードを動的生成しローカルデータ管理の安全性を高めてみる

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13. 

    @kuangyujing

    25行でC#のオブジェクト指向がわかった気になる

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14. 

    @masanori-_-msl

    自動実装プロパティの話

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15. 

    @4_mio_11

    C#で学ぶダックタイピング

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16. 

    @gushwell

    C#リフレクションTIPS 55連発

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17. 

    @yoship1639

    【C#】26行でライフゲームを書いてみる（コンソール表示可能）

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18. 

    @skitoy4321

    非同期外部プロセス起動で標準出力を受け取る際の注意点

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19. 

    @MasanoriIwakura

    平成と共に振り返るC#の歴史

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20. 

    @kyohmizu

    【C#】ショートコード・テクニック

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21. 

    @hiron2225

    ジェネリクス使ってFluentなインターフェイスを作ってみる

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22. 

    @rim_0720

    .NET Coreの自己完結型(self-contained app)にするとファイルサイズはどれだけ増加するのか？

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23. 

    @hatsunetsu7

    C# SUPER FAST MICRO ORMapper

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24. 

    @proprogrammer0

    いいからBlazorをさわるんだ

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25. 

    @Naot-Cocoa

    Unityゲーム開発で役立つインタフェース活用例

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