01'在主窗体Form1中声明
02  private void 插入新编码ToolStripMenuItem_Click(object sender, EventArgs e)
03         {
04             Form2 f2 = new Form2();
05             f2.FatherRefresh += new Form2.DoAction(Form1_Load);
06             f2.ShowDialog();
07         }
08 '在子窗体中加入如下声明
09 public delegate void DoAction(object sender, EventArgs e);
10         public event DoAction FatherRefresh;
11 '在关闭Form2的时候调用FatherRefresh函数
12 private void Form2_FormClosed(object sender, FormClosedEventArgs e)
13         {
14             FatherRefresh(sender, e);
15         }