简单的C#委托

'在主窗体Form1中声明
 private void 插入新编码ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Form2 f2 = new Form2();
            f2.FatherRefresh += new Form2.DoAction(Form1_Load);
            f2.ShowDialog();
        }
'在子窗体中加入如下声明
public delegate void DoAction(object sender, EventArgs e);
        public event DoAction FatherRefresh;
'在关闭Form2的时候调用FatherRefresh函数
private void Form2_FormClosed(object sender, FormClosedEventArgs e)
        {
            FatherRefresh(sender, e);
        }