回答編集履歴
2
a
answer
CHANGED
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@@ -2,7 +2,7 @@
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2
2
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3
3
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それは例えば、`Console.WriteLine(string[])`としたようなものです。
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4
4
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5
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-
[AddRange(TreeNode[])](https://docs.microsoft.com/ja-jp/dotnet/api/system.windows.forms.treenodecollection.addrange?view=netframework-4.7.2)
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5
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+
[AddRange(TreeNode[])](https://docs.microsoft.com/ja-jp/dotnet/api/system.windows.forms.treenodecollection.addrange?view=netframework-4.7.2)がありますので
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6
6
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```csharp
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7
7
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rootNode.Nodes.AddRange(memberFile.CheckedResult.Select(x => new TreeNode(x.ToString()).ToArray());
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8
8
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```
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1
あ
answer
CHANGED
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@@ -4,6 +4,6 @@
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4
4
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5
5
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[AddRange(TreeNode[])](https://docs.microsoft.com/ja-jp/dotnet/api/system.windows.forms.treenodecollection.addrange?view=netframework-4.7.2)はありますので
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6
6
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```csharp
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7
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-
rootNode.Nodes.AddRange(memberFile.CheckedResult.Select(x => new TreeNode(x.ToString()));
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7
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+
rootNode.Nodes.AddRange(memberFile.CheckedResult.Select(x => new TreeNode(x.ToString()).ToArray());
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8
8
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```
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9
9
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こんな感じじゃないですかね？(もしくはforeachのままでいい気もする)
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