如何创建5个按钮和动态分配各个单击事件？ [英] How do I create 5 buttons and assign individual click events dynamically?

问题描述

我需要建立动态的5个按钮的Windows窗体，每个按钮应该响应单击事件。我尝试过，但所有的按钮都响应相同的事件。

I need to create 5 buttons dynamically on windows form and each button should respond to click event. I tried it but all buttons are responding to same event.

推荐答案

这就是尼克讲的是两个选择（你应该能够运行这个code，看到这两个选项）：

This is what Nick is talking about are your two options (You should be able to run this code and see both options):

  public Form1()
  {
     InitializeComponent();

     for (int i = 0; i < 5; i++)
     {
        Button button = new Button();
        button.Location = new Point(20, 30 * i + 10);
        switch (i)
        {
           case 0:
              button.Click += new EventHandler(ButtonClick);
              break;
           case 1:
              button.Click += new EventHandler(ButtonClick2);
              break;
           //...
        }
        this.Controls.Add(button);
     }

     for (int i = 0; i < 5; i++)
     {
        Button button = new Button();
        button.Location = new Point(160, 30 * i + 10);
        button.Click += new EventHandler(ButtonClickOneEvent);
        button.Tag = i;
        this.Controls.Add(button);
     }
  }

  void ButtonClick(object sender, EventArgs e)
  {
     // First Button Clicked
  }
  void ButtonClick2(object sender, EventArgs e)
  {
     // Second Button Clicked
  }

  void ButtonClickOneEvent(object sender, EventArgs e)
  {
     Button button = sender as Button;
     if (button != null)
     {
        // now you know the button that was clicked
        switch ((int)button.Tag)
        {
           case 0:
              // First Button Clicked
              break;
           case 1:
              // Second Button Clicked
              break;
           // ...
        }
     }
  }

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