scdlg.cpp

用VC+ADO+ACCESS 做的学生管理系统

// ScDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DataBase.h"
#include "ScDlg.h"
#include "ScSet.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CScDlg dialog


CScDlg::CScDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CScDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CScDlg)
	m_cno = 0;
	m_grade = 0;
	m_sno = 0;
	//}}AFX_DATA_INIT
}


void CScDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CScDlg)
	DDX_Text(pDX, IDC_EDIT_CNO, m_cno);
	DDX_Text(pDX, IDC_EDIT_GRADE, m_grade);
	DDX_Text(pDX, IDC_EDIT_SNO, m_sno);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CScDlg, CDialog)
	//{{AFX_MSG_MAP(CScDlg)
	ON_BN_CLICKED(IDC_RESTART, OnRestart)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CScDlg message handlers

void CScDlg::OnOK() 
{
	// TODO: Add extra validation here
	UpdateData(TRUE);
	CString strSQL;
	int flag=0;
	while(!flag){
		CScSet m_recordset(&m_database);
		strSQL.Format("select * from Sc where Sno=%d",m_sno);
		m_recordset.Open(AFX_DB_USE_DEFAULT_TYPE,strSQL);
		if(m_recordset.GetRecordCount()==0)
		{
			strSQL.Format("insert into Sc values(%d,%d,%d)",
				m_sno,m_cno,m_grade);
			m_database.ExecuteSQL(strSQL);
			m_database.Close();
			CDialog::OnOK();
			flag=1;
		}
		else
			m_sno++;
	}
	CDialog::OnOK();
}

void CScDlg::OnRestart() 
{
	// TODO: Add your control notification handler code here
	m_cno=0;
	m_grade=0;
	m_sno=0;
	UpdateData(FALSE);
}