private void button2_Click_1(object sender, EventArgs e)
{
Form4 form4 = new Form4();
form4.Show();
}
private void Form2_FormClosing(object sender, FormClosingEventArgs e)
{
e.Cancel = true;
this.Hide();
menu.Show();
}
private void button3_Click(object sender, EventArgs e)
{
form4 = new Form4();//投诉管理
form4.Show();
}