How To Create Database Application Using VC++
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In this tutorial we will show you how to develop a database application using VC++ and ADO. After viewing the video tutorial, download the source code and try to modify the code so as to get a feel of what is learned in this video tutorial.



Source Code
AddStudentDlg.cpp 

// AddStudentDlg.cpp : implementation file
//

#include "stdafx.h"
#include "StudentDatabase.h"
#include "AddStudentDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAddStudentDlg dialog


CAddStudentDlg::CAddStudentDlg(CWnd* pParent /*=NULL*/)
: CDialog(CAddStudentDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CAddStudentDlg)
m_Name = _T("");
m_iAge = 0;
//}}AFX_DATA_INIT
}


void CAddStudentDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAddStudentDlg)
DDX_Text(pDX, IDC_EDIT_NAME, m_Name);
DDX_Text(pDX, IDC_EDIT_AGE, m_iAge);
//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CAddStudentDlg, CDialog)
//{{AFX_MSG_MAP(CAddStudentDlg)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CAddStudentDlg message handlers

void CAddStudentDlg::OnOK() 
{
UpdateData();
CString strInsertedDataQuery;
strInsertedDataQuery.Format("INSERT INTO STUDENT_INFO_TB (Name,Age) VALUES ('%s',%d)",m_Name,m_iAge);
try
{
CRecordset InserRec(((CStudentDatabaseApp*)AfxGetApp())->m_Connection);
InserRec.Open(strInsertedDataQuery);
InserRec.Close();
}
catch(_com_error &ex)
{
AfxMessageBox(ex.Description());
return ;
}
catch(...)
{
AfxMessageBox("ID_EMP_ERROR_GENERIC");
return ;

}

CDialog::OnOK();
}


MainFrm.cpp 

// MainFrm.cpp : implementation of the CMainFrame class
//

#include "stdafx.h"
#include "StudentDatabase.h"

#include "MainFrm.h"
#include "AddStudentDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMainFrame

IMPLEMENT_DYNCREATE(CMainFrame, CFrameWnd)

BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)
//{{AFX_MSG_MAP(CMainFrame)
ON_WM_CREATE()
ON_COMMAND(ID_STUDENTINFO_ADDSTUDENT, OnStudentinfoAddstudent)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

static UINT indicators[] =
{
ID_SEPARATOR,           // status line indicator
ID_INDICATOR_CAPS,
ID_INDICATOR_NUM,
ID_INDICATOR_SCRL,
};

/////////////////////////////////////////////////////////////////////////////
// CMainFrame construction/destruction

CMainFrame::CMainFrame()
{
// TODO: add member initialization code here
}

CMainFrame::~CMainFrame()
{
}

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CFrameWnd::OnCreate(lpCreateStruct) == -1)
return -1;
if (!m_wndToolBar.CreateEx(this, TBSTYLE_FLAT, WS_CHILD | WS_VISIBLE | CBRS_TOP
| CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC) ||
!m_wndToolBar.LoadToolBar(IDR_MAINFRAME))
{
TRACE0("Failed to create toolbar ");
return -1;      // fail to create
}

if (!m_wndStatusBar.Create(this) ||
!m_wndStatusBar.SetIndicators(indicators,
 sizeof(indicators)/sizeof(UINT)))
{
TRACE0("Failed to create status bar ");
return -1;      // fail to create
}

// TODO: Delete these three lines if you don't want the toolbar to
//  be dockable
m_wndToolBar.EnableDocking(CBRS_ALIGN_ANY);
EnableDocking(CBRS_ALIGN_ANY);
DockControlBar(&m_wndToolBar);

return 0;
}

BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{
if( !CFrameWnd::PreCreateWindow(cs) )
return FALSE;
// TODO: Modify the Window class or styles here by modifying
//  the CREATESTRUCT cs

return TRUE;
}

/////////////////////////////////////////////////////////////////////////////
// CMainFrame diagnostics

#ifdef _DEBUG
void CMainFrame::AssertValid() const
{
CFrameWnd::AssertValid();
}

void CMainFrame::Dump(CDumpContext& dc) const
{
CFrameWnd::Dump(dc);
}

#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMainFrame message handlers


void CMainFrame::OnStudentinfoAddstudent() 
{
CAddStudentDlg AddStudentDlg;
AddStudentDlg.DoModal();
}

StudentDatabase.cpp

// StudentDatabase.cpp : Defines the class behaviors for the application.
//

#include "stdafx.h"
#include "StudentDatabase.h"

#include "MainFrm.h"
#include "StudentDatabaseDoc.h"
#include "StudentDatabaseView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CStudentDatabaseApp

BEGIN_MESSAGE_MAP(CStudentDatabaseApp, CWinApp)
//{{AFX_MSG_MAP(CStudentDatabaseApp)
ON_COMMAND(ID_APP_ABOUT, OnAppAbout)
// NOTE - the ClassWizard will add and remove mapping macros here.
//    DO NOT EDIT what you see in these blocks of generated code!
//}}AFX_MSG_MAP
// Standard file based document commands
ON_COMMAND(ID_FILE_NEW, CWinApp::OnFileNew)
ON_COMMAND(ID_FILE_OPEN, CWinApp::OnFileOpen)
// Standard print setup command
ON_COMMAND(ID_FILE_PRINT_SETUP, CWinApp::OnFilePrintSetup)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CStudentDatabaseApp construction

CStudentDatabaseApp::CStudentDatabaseApp()
{
// TODO: add construction code here,
// Place all significant initialization in InitInstance
}

/////////////////////////////////////////////////////////////////////////////
// The one and only CStudentDatabaseApp object

CStudentDatabaseApp theApp;

/////////////////////////////////////////////////////////////////////////////
// CStudentDatabaseApp initialization

BOOL CStudentDatabaseApp::InitInstance()
{
AfxEnableControlContainer();

// Standard initialization
// If you are not using these features and wish to reduce the size
//  of your final executable, you should remove from the following
//  the specific initialization routines you do not need.

#ifdef _AFXDLL
Enable3dControls(); // Call this when using MFC in a shared DLL
#else
Enable3dControlsStatic(); // Call this when linking to MFC statically
#endif

// Change the registry key under which our settings are stored.
// TODO: You should modify this string to be something appropriate
// such as the name of your company or organization.
SetRegistryKey(_T("Local AppWizard-Generated Applications"));

LoadStdProfileSettings();  // Load standard INI file options (including MRU)

// Register the application's document templates.  Document templates
//  serve as the connection between documents, frame windows and views.

CSingleDocTemplate* pDocTemplate;
pDocTemplate = new CSingleDocTemplate(
IDR_MAINFRAME,
RUNTIME_CLASS(CStudentDatabaseDoc),
RUNTIME_CLASS(CMainFrame),       // main SDI frame window
RUNTIME_CLASS(CStudentDatabaseView));
AddDocTemplate(pDocTemplate);

// Parse command line for standard shell commands, DDE, file open
CCommandLineInfo cmdInfo;
ParseCommandLine(cmdInfo);

// Dispatch commands specified on the command line
if (!ProcessShellCommand(cmdInfo))
return FALSE;
char errorString[256];
CString strConStr=ID_CONNECTION_STRING;
strConStr+=ID_DEFAULT_DATABSE_PATH;
try
{
if(m_Connection.Open(strConStr,"admin","")) //Opening the Database connection
{
return FALSE;
}
else
{
return TRUE;
}

}
catch(_com_error &ex)
{
AfxMessageBox(ex.Description());
m_Connection.Close();
return FALSE;
}
catch(CException* ex)
{
ex->GetErrorMessage(errorString,256); 
AfxMessageBox(errorString);
ex->Delete(); 
m_Connection.Close();
return FALSE;

}
catch(...)
{
AfxMessageBox("ID_EMP_ERROR_GENERIC");
m_Connection.Close();
return FALSE;

}

// The one and only window has been initialized, so show and update it.
m_pMainWnd->ShowWindow(SW_SHOW);
m_pMainWnd->UpdateWindow();

return TRUE;
}


/////////////////////////////////////////////////////////////////////////////
// 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)
// No message handlers
//}}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()

// App command to run the dialog
void CStudentDatabaseApp::OnAppAbout()
{
CAboutDlg aboutDlg;
aboutDlg.DoModal();
}

/////////////////////////////////////////////////////////////////////////////
// CStudentDatabaseApp message handlers



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Number Of articles Posted      : 60
Number Of Messages Posted  : 3
Joined Date : 2012/11/14
   
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