Form1主窗体：

复制代码 代码如下:

public delegate void SetVisiableHandler();//定义委托类型

private void button1_Click(object sender,EventArgs e)//单击事件，打开子窗体

{

Form2 frm = new Form2(new SetVisiableHandler(SetVisiable));

frm.Show();

}

private void SetVisiable()

{

dataGridView1.Rows.Add("123","456","789");

}

Form2子窗体：

复制代码 代码如下:

private SetVisiableHandler m_setVisable;//声明委托变量

public Form2(SetVisiableHandler setvisiable)

{

InitializeComponent();

this.m_setVisiable = setvisiable;

}

public void butten1_Click(object sender,EventArgs e)

{

if(this.m_setVisiable != null)

{

this.m_setVisiable();

}

}