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  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Linq;
  7. using System.Text;
  8. using System.Threading.Tasks;
  9. using System.Windows.Forms;
  10.  
  11. namespace WindowsFormsApplication1
  12. {
  13.     public partial class ClassA : Form
  14.     {
  15.         private ClassB B = new ClassB();
  16.  
  17.         public ClassA()
  18.         {
  19.             InitializeComponent();
  20.             button1.Click += (s, e) => B.button1_Click_1(s, e);
  21.             // button1.Click += (s, e) => B.button1_Click_2((Button)s, "hogehoge");
  22.         }
  23.     }
  24.  
  25.     public class ClassB
  26.     {
  27.         public void button1_Click_1(object sender, EventArgs e)
  28.         {
  29.             (Button)sender.Text = "hogehoge";
  30.         }
  31.  
  32.         public void button1_Click_2(Button button, string arg /* arg2,arg3... */)
  33.         {
  34.             button.Text = arg;
  35.         }
  36.     }
  37. }
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https://ideone.com/h2oYGz
language:
C# (gmcs 5.20.1)
created:
11 years ago
visibility:
public

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