private void label4_Click(object sender, EventArgs e)
{
string a = "（请确保以下所填信息与您要找回的私钥注册时所填一致！）";
this.Hide();
register ff = new register(a);
ff.ShowDialog();
}
private void button2_Click(object sender, EventArgs e)//注册
{
string a = "（友情提示：请如实填写以下信息，便于以后密钥找回！）";
this.Hide();
register ff = new register(a);
ff.ShowDialog();
}