//第二个窗体

 public delegate void DAddress(string address);

        public event DAddress ESignAddress;

 protected void SignAddress(string address)

        {

            ESignAddress(address);

        }

 

private void BtnClick(object sender,Eventargs e)

{

 SignAddress(comCity.Text + comArea.Text + txtAddress.Text);

}

//第一个窗体

from f=new from();

f.ESignAddress+=new from.DAddress()

f.show();

 

 

protected void signaddress(string str)

{

Msg.Text=str;

}