// RsCgDlg.cpp : implementation file
//

#include "stdafx.h"
#include "RsCgDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CRsCgDlg dialog


CRsCgDlg::CRsCgDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CRsCgDlg::IDD, pParent)
{
	m_strConnection = _T("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=L:\\精彩范例vc\\舉一反三\\實例6\\3\\數據庫\\studentreg.mdb;Mode=ReadWrite;Persist Security Info=False");
	m_strCmdText = _T("StudentInfo");

	m_pRs = NULL;
	
	//{{AFX_DATA_INIT(CRsCgDlg)
	m_strDlgid = _T("");
	m_strDlgname = _T("");
	m_sDlgage = 0;
	m_strDlgsex = _T("");
	m_strDlgemail = _T("");
	m_lDlgclassid = 0;
	m_strDlgmemo = _T("");
	//}}AFX_DATA_INIT
}

CRsCgDlg::~CRsCgDlg()
{
	m_pRs = NULL;
}

BOOL CRsCgDlg::OnInitDialog()
{
	HRESULT hr = NOERROR;
	IADORecordBinding *piAdoRecordBinding = NULL;

	CDialog::OnInitDialog();

	try
	{
		m_pRs.CreateInstance(__uuidof(Recordset));

		m_pRs->CursorLocation = adUseClient;
		m_pRs->Open((LPCTSTR)m_strCmdText, (LPCTSTR)m_strConnection, adOpenStatic, 
			adLockReadOnly, adCmdTableDirect);

		if (FAILED(hr = m_pRs->QueryInterface(__uuidof(IADORecordBinding), (LPVOID *)&piAdoRecordBinding)))
			_com_issue_error(hr);
		if (FAILED(hr = piAdoRecordBinding->BindToRecordset(this)))
			_com_issue_error(hr);

		RefreshBoundData();
	}
	catch (_com_error &e)
	{
		GenerateError(e.Error(), e.Description());
	}

	if (piAdoRecordBinding)
		piAdoRecordBinding->Release();

	return TRUE;
}

void CRsCgDlg::RefreshBoundData()
{
	if (adFldOK == lidStatus)
		m_strDlgid = m_wszid;
	else
		m_strDlgid = _T("");
	if (adFldOK == lnameStatus)
		m_strDlgname = m_wszname;
	else
		m_strDlgname = _T("");
	if (adFldOK == lageStatus)
		m_sDlgage = m_sage;
	else
		m_sDlgage = 0;
	if (adFldOK == lsexStatus)
		m_strDlgsex = m_wszsex;
	else
		m_strDlgsex = _T("");
	if (adFldOK == lemailStatus)
		m_strDlgemail = m_wszemail;
	else
		m_strDlgemail = _T("");
	if (adFldOK == lclassidStatus)
		m_lDlgclassid = m_lclassid;
	else
		m_lDlgclassid = 0;
	if (adFldOK == lmemoStatus)
		m_strDlgmemo = m_wszmemo;
	else
		m_strDlgmemo = _T("");

	UpdateData(FALSE);
}

void CRsCgDlg::GenerateError(HRESULT hr, PWSTR pwszDescription)
{
	CString strError;

	strError.Format("Run-time error '%d (%x)'", hr, hr);
	strError += "\n\n";
	strError += pwszDescription;

	AfxMessageBox(strError);
}

void CRsCgDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CRsCgDlg)
	DDX_Text(pDX, IDC_EDIT_ID, m_strDlgid);
	DDX_Text(pDX, IDC_EDIT_NAME, m_strDlgname);
	DDX_Text(pDX, IDC_EDIT_AGE, m_sDlgage);
	DDX_Text(pDX, IDC_EDIT_SEX, m_strDlgsex);
	DDX_Text(pDX, IDC_EDIT_EMAIL, m_strDlgemail);
	DDX_Text(pDX, IDC_EDIT_CLASSID, m_lDlgclassid);
	DDX_Text(pDX, IDC_EDIT_MEMO, m_strDlgmemo);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CRsCgDlg, CDialog)
	//{{AFX_MSG_MAP(CRsCgDlg)
	ON_BN_CLICKED(ID_BTN_MOVEFIRST, OnBtnMoveFirst)
	ON_BN_CLICKED(ID_BTN_MOVELAST, OnBtnMoveLast)
	ON_BN_CLICKED(ID_BTN_MOVENEXT, OnBtnMoveNext)
	ON_BN_CLICKED(ID_BTN_MOVEPREVIOUS, OnBtnMovePrevious)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CRsCgDlg message handlers

void CRsCgDlg::OnBtnMoveFirst() 
{
	try
	{
		m_pRs->MoveFirst();
		RefreshBoundData();
	}
	catch (_com_error &e)
	{
		GenerateError(e.Error(), e.Description());
	}
}

void CRsCgDlg::OnBtnMoveLast() 
{
	try
	{
		m_pRs->MoveLast();
		RefreshBoundData();
	}
	catch (_com_error &e)
	{
		GenerateError(e.Error(), e.Description());
	}
}

void CRsCgDlg::OnBtnMoveNext() 
{
	try
	{
		m_pRs->MoveNext();
		RefreshBoundData();
	}
	catch (_com_error &e)
	{
		GenerateError(e.Error(), e.Description());
	}
}

void CRsCgDlg::OnBtnMovePrevious() 
{
	try
	{
		m_pRs->MovePrevious();
		RefreshBoundData();
	}
	catch (_com_error &e)
	{
		GenerateError(e.Error(), e.Description());
	}
}