adosqldemodlg.cpp

ADO 连接数据库,pf

// ADOSQLDemoDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ADOSQLDemo.h"
#include "ADOSQLDemoDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CADOSQLDemoDlg dialog

CADOSQLDemoDlg::CADOSQLDemoDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CADOSQLDemoDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CADOSQLDemoDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CADOSQLDemoDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CADOSQLDemoDlg)
	DDX_Control(pDX, IDC_LIST, m_CtrlList);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CADOSQLDemoDlg, CDialog)
	//{{AFX_MSG_MAP(CADOSQLDemoDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CADOSQLDemoDlg message handlers

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

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	OnInitList();
	GetAllRecord();
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CADOSQLDemoDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CADOSQLDemoDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CADOSQLDemoDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CADOSQLDemoDlg::OnOK() 
{
	// TODO: Add extra validation here
	
	CDialog::OnOK();
}

//********定义连接方法***********************************************
void CADOSQLDemoDlg::OnInitAdoConnect()
{
	//***初始化OLE/DB环境********************************************
	::CoInitialize(NULL);

	//***捕捉异常****************************************************
	try
	{
		m_pConnection.CreateInstance(__uuidof(Connection));
		//***设置连接字符串******************************************
		_bstr_t strConn = "Provider = SQLOLEDB;Server = (local);Database = adotest;uid = sa;pwd = sa;";
		//***连接****************************************************
		m_pConnection->Open(strConn,"","",NULL);
	}
	catch(_com_error e)
	{
		//***显示错误信息********************************************
		AfxMessageBox(e.Description());
	}
}


_RecordsetPtr& CADOSQLDemoDlg::GetRecordset(CString strSQL)
{
	try
	{
		if(m_pConnection = NULL)
			OnInitAdoConnect();
		m_pRecordset.CreateInstance(__uuidof(Recordset));
		m_pRecordset->Open(_variant_t(strSQL),m_pConnection.GetInterfacePtr(),adOpenKeyset,adLockOptimistic,adCmdText);
	}
	catch(_com_error e)
	{
		//***显示错误信息**************************************
		AfxMessageBox(e.Description());
	}
	return m_pRecordset;
}

void CADOSQLDemoDlg::ExecuteSQL(CString bstrSQL)
{
	try
	{
		if(m_pConnection == NULL)
			OnInitAdoConnect();
		m_pRecordset.CreateInstance(__uuidof(Recordset));
		m_pRecordset->Open(_variant_t(bstrSQL),m_pConnection.GetInterfacePtr(),adOpenKeyset,adLockOptimistic,adCmdText);
	}
	catch(_com_error e)
	{
		AfxMessageBox(e.Description());
	}
}

void CADOSQLDemoDlg::ExitAdo()
{
	if(m_pRecordset != NULL)
		m_pRecordset->Close();
	//***断开连接****************************************************
	m_pConnection->Close();
}


void CADOSQLDemoDlg::OnInitList()
{
	//***设置外形****************************************************
	DWORD Style = LVS_EX_FULLROWSELECT | LVS_EX_GRIDLINES | LVS_EX_INFOTIP ;
	CRect Rect;
	GetDlgItem(IDC_LIST)->GetClientRect(&Rect);
	m_CtrlList.InsertColumn(0,"Name",LVCFMT_CENTER,Rect.Width()/2);
	m_CtrlList.InsertColumn(1,"pwd",LVCFMT_CENTER,Rect.Width()/2);
	m_CtrlList.SetExtendedStyle(Style);
}

void CADOSQLDemoDlg::GetAllRecord()
{	
	//***初始化环境**************************************************
	OnInitAdoConnect();
	//***设置Select语句**********************************************
	CString m_strSQL;
	_RecordsetPtr m_pRecordsetTemp;
	m_strSQL = "Select * From login";
	m_pRecordsetTemp = GetRecordset(m_strSQL);
	while(!m_pRecordsetTemp->adoEOF)
	{
		_bstr_t name = m_pRecordsetTemp->Fields->GetItem("logName")->Value;
		_bstr_t pwd = m_pRecordsetTemp->Fields->GetItem("lohpwd")->Value;
		int n = m_CtrlList.GetItemCount();
		m_CtrlList.InsertColumn(n,name);
		m_CtrlList.InsertColumn(n,1,pwd);
		m_pRecordset->MoveNext();
	}
	ExitAdo();
	
}