新的EventHandler [英] new EventHandler

问题描述

大家好

Hi everyone

/* what the mining of this line button1.Click += new EventHandler(button1_Click);*/
  
public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }      

        private void button1_MouseMove(object sender, MouseEventArgs e)
        {
            Button button1 = new Button();

            button1.Click += new EventHandler(button1_Click); /* what the mining of this line */

          // MessageBox.Show("move");
        }
        private void button1_Click(object sender, EventArgs e)
        {

            MessageBox.Show("click");
        }

推荐答案

好吧，这一行:
button1.Click += new EventHandler(button1_Click);
表示您要将名为button1_Click的单击事件处理程序附加到放置在表单上的 button1 上.

因此，此后每当您单击button1时，都会引发此事件，并且将执行在button1_Click方法中编写的任何代码.

Well, this line:
button1.Click += new EventHandler(button1_Click);
means that you are attaching a click event handler named button1_Click to the button1 placed on your form.

Thus, after this whenever you click button1, then this event would be raised and whatever code is written in button1_Click method will be executed.

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