private void f_Loadchinhanh()
{
string s_ip_local = m_v.Maincode("Ip");
dsChinhanh = m_v.get_data(" select * from " + m_v.user + ".dmchinhanh where ip='" + s_ip_local + "' order by ten");
if (dsChinhanh.Tables[0].Select("trungtam=1").Length > 0)
{
dsChinhanh = m_v.get_data(" select * from " + m_v.user + ".dmchinhanh order by ten");
}
cbChinhanh.DisplayMember = "ten";
cbChinhanh.ValueMember = "id";
cbChinhanh.DataSource = dsChinhanh.Tables[0];
}