private void button2_Click(object sender, EventArgs e)
{
String select_yh_name;
select_yh_name = comboBox1.SelectedValue.ToString();
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.del_YH(select_yh_name);
GLY_xiugai_Load(null, null);
}