vc++学生选课系统开发 sql语句操作数据库 修改课程名模块

BOOL CKCMODDlg::OnInitDialog()
{
CDialog::OnInitDialog();

// TODO: Add extra initialization here

return TRUE;  // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}

void CKCMODDlg::OnOK()
{
// TODO: Add extra validation here
CADO ado;
ado.CADOConnect();
UpdateData(TRUE);
if (m_old==""&&m_new=="")
{
MessageBox("不能为空");
GetDlgItem(IDC_EDIT1)->SetFocus();
}

else
{
CString str;
str.Format("update kecheng set cname='%s' where kecheng.cname='%s'",m_new,m_old);
//str.Format("insert into ");
ado.ExecuteSQL(_bstr_t(str));
MessageBox("修改成功");
}
CDialog::OnOK();
}