回答編集履歴
2
IComparable実装パターンを追記
test
CHANGED
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@@ -13,3 +13,71 @@
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```
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追記
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無理矢理FileInfoにIComparableを実装するならこんな感じでしょうか。
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自作クラスなら自然な形で実装できるのですが・・・
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余談ですが、FileInfoに拡張メソッドでCompareToを定義してみましたがやはりダメでした。
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```C#
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filelist.Select(p => new FileInfoWrapper(p)).Max().FileInfo;
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class FileInfoWrapper : IComparable<FileInfoWrapper>
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{
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public FileInfo FileInfo { get; }
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public FileInfoWrapper(FileInfo fileInfo) => FileInfo = fileInfo;
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public int CompareTo(FileInfoWrapper other)
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{
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if (FileInfo.Length == other.FileInfo.Length)
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{
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return 0;
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}
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else if (FileInfo.Length > other.FileInfo.Length)
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{
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return 1;
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}
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else
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{
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return -1;
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}
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}
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}
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```
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1
変数の誤りを修正
test
CHANGED
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@@ -8,7 +8,7 @@
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8
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filelist.Aggregate((result, next) => result.
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filelist.Aggregate((result, next) => result.Length > next.Length ? result : next);
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