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トップC#に関する質問複数のButtonなどの共通部分をまとめて宣言したい

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回答編集履歴

2

見直しキャンペーン中

2023/08/09 10:42

投稿

TN8001
TN8001

スコア9893

test CHANGED
@@ -39,7 +39,7 @@
39
39
  btnClose.Location = new Point(100, 10);
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  Controls.Add(btnClose);
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- foreach(Button b in Controls.Cast<Control>().Where(x => x is Button))
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+ foreach(Button b in Controls.OfType<Button>())
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  {
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  b.Size = new Size(100, 20);
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  }

1

見直しキャンペーン中

2023/07/17 06:30

投稿

TN8001
TN8001

スコア9893

test CHANGED
@@ -1,137 +1,69 @@
1
1
  各ボタンは配列等で管理せず名前を付けておきたいってことなんだと解釈し、3パターン考えましたがどれもパッとしませんね。
2
2
 
3
-
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-
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3
  案１ 一時的に配列に入れてforeach
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-
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- ```C#
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+ ```cs
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-
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  Button btnStart = new Button();
10
-
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  btnStart.Text = "スタート";
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-
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  btnStart.Location = new Point(10, 10);
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8
 
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+ Button btnNext = new Button();
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+ btnNext.Text = "次へ";
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+ btnNext.Location = new Point(50, 50);
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12
 
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+ Button btnClose = new Button();
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+ btnClose.Text = "閉じる";
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+ btnClose.Location = new Point(100, 10);
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+
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+ Button[] buttons = { btnStart, btnNext, btnClose };
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+ foreach(Button b in buttons)
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+ {
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+ b.Size = new Size(100, 20);
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+ Controls.Add(b);
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+ }
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+ ```
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+
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+ 案２ Controlsから探してforeach
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+ ```cs
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+ Button btnStart = new Button();
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+ btnStart.Text = "スタート";
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+ btnStart.Location = new Point(10, 10);
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+ Controls.Add(btnStart);
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31
 
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  Button btnNext = new Button();
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-
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  btnNext.Text = "次へ";
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-
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  btnNext.Location = new Point(50, 50);
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-
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+ Controls.Add(btnNext);
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-
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36
 
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  Button btnClose = new Button();
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+ btnClose.Text = "閉じる";
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+ btnClose.Location = new Point(100, 10);
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+ Controls.Add(btnClose);
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- btnClose.Text = "閉じる";
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-
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- btnClose.Location = new Point(100, 10);
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-
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-
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-
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- Button[] buttons = { btnStart, btnNext, btnClose };
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+ foreach(Button b in Controls.Cast<Control>().Where(x => x is Button))
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-
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- foreach(Button b in buttons)
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-
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  {
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-
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  b.Size = new Size(100, 20);
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-
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- Controls.Add(b);
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-
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  }
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-
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  ```
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-
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-
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- 案２ Controlsから探してforeach
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+ 案３ 継承
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-
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- ```C#
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+ ```cs
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-
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- Button btnStart = new Button();
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-
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- btnStart.Text = "スタート";
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-
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- btnStart.Location = new Point(10, 10);
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+ Button btnStart = new MyButton("スタート", new Point(10, 10));
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-
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  Controls.Add(btnStart);
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52
 
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-
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-
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- Button btnNext = new Button();
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-
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- btnNext.Text = "次へ";
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-
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- btnNext.Location = new Point(50, 50);
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+ Button btnNext = new MyButton("次へ", new Point(50, 50));
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-
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54
  Controls.Add(btnNext);
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-
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-
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- Button btnClose = new Button();
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-
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- btnClose.Text = "閉じる";
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-
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- btnClose.Location = new Point(100, 10);
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+ Button btnClose = new MyButton("閉じる", new Point(100, 10));
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-
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  Controls.Add(btnClose);
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58
 
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59
 
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-
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- foreach(Button b in Controls.Cast<Control>().Where(x => x is Button))
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+ class MyButton : Button
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-
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  {
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-
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+ public MyButton(string text, Point location)
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+ {
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+ Text = text;
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+ Location = location;
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- b.Size = new Size(100, 20);
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+ Size = new Size(100, 20);
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-
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+ }
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68
  }
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-
91
69
  ```
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-
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-
94
-
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- 案３ 継承
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-
97
- ```C#
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-
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- Button btnStart = new MyButton("スタート", new Point(10, 10));
100
-
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- Controls.Add(btnStart);
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-
103
-
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-
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- Button btnNext = new MyButton("次へ", new Point(50, 50));
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-
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- Controls.Add(btnNext);
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-
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-
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-
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- Button btnClose = new MyButton("閉じる", new Point(100, 10));
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-
113
- Controls.Add(btnClose);
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-
115
-
116
-
117
-
118
-
119
- class MyButton : Button
120
-
121
- {
122
-
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- public MyButton(string text, Point location)
124
-
125
- {
126
-
127
- Text = text;
128
-
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- Location = location;
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-
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- Size = new Size(100, 20);
132
-
133
- }
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-
135
- }
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-
137
- ```