private void button2_Click(object sender, EventArgs e)
{
String neirong;
DateTime writetime;
neirong = textBox1.Text;
writetime = DateTime.Now;
chloe_control_all chloe_obj = new chloe_control_all("Data Source=DESKTOP-O4C25KM;Initial Catalog=场馆预约系统;Integrated Security=True");
chloe_obj.inser_suggest(neirong, writetime);
MessageBox.Show("感谢您的宝贵建议！");
}