public void xoa_du_lieu_cham_cong(decimal ip_dc_id_nv, string ip_str_thang, string ip_str_nam)
{
CStoredProc v_cstore = new CStoredProc("pr_XOA_DU_LIEU_CHAM_CONG");
v_cstore.addDecimalInputParam("@ID_NHAN_VIEN", ip_dc_id_nv);
v_cstore.addDecimalInputParam("@THANG", CIPConvert.ToDecimal(ip_str_thang));
v_cstore.addDecimalInputParam("@NAM", CIPConvert.ToDecimal(ip_str_nam));
v_cstore.ExecuteCommand(this);
}