private void btnDelUnuseTime_Click(object sender, EventArgs e)
{
if (AdminManage.DelUnuseNotice())
{
MessageBox.Show("删除成功!");
tboxNoticeContent.Text = "";
dgvNotice.DataSource = AdminManage.GetNoticeList(id);
}
else
{
MessageBox.Show("公告删除失败！");
}
}