addtitledlg.cpp

管理员登录功能；读者借阅模块；读者归还模块；书籍信息模块

// AddTitleDlg.cpp : implementation file
//

#include "stdafx.h"
#include "db.h"
#include "AddTitleDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAddTitleDlg dialog


CAddTitleDlg::CAddTitleDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CAddTitleDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CAddTitleDlg)
	m_sAuthor = _T("");
	m_sClass = _T("");
	m_sIsbn = _T("");
	m_sName = _T("");
	m_sPub = _T("");
	//}}AFX_DATA_INIT
}


void CAddTitleDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAddTitleDlg)
	DDX_Text(pDX, IDC_EDITAUTHOR, m_sAuthor);
	DDX_Text(pDX, IDC_EDITCLASS, m_sClass);
	DDX_Text(pDX, IDC_EDITISBN, m_sIsbn);
	DDX_Text(pDX, IDC_EDITNAME, m_sName);
	DDX_Text(pDX, IDC_EDITPUB, m_sPub);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CAddTitleDlg, CDialog)
	//{{AFX_MSG_MAP(CAddTitleDlg)
	ON_BN_CLICKED(IDC_BUTTONADD, OnButtonadd)
	ON_BN_CLICKED(IDC_BUTTONRESET, OnButtonreset)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CAddTitleDlg message handlers

void CAddTitleDlg::OnButtonadd() 
{
	UpdateData();
	if(m_sIsbn.GetLength() == 0)
	{
		MessageBox("ISBN 不能为空!");
		return ;
	}
	if(m_sName.GetLength() == 0)
	{
		MessageBox("图书名不能为空!");
		return ;
	}
	if(m_sPub.GetLength() == 0)
	{
		MessageBox("出版社名不能为空!");
		return ;
	}
	if(m_sAuthor.GetLength() == 0)
	{
		MessageBox("图书作者名不能为空!");
		return ;
	}
	if(m_sClass.GetLength() == 0)
	{
		MessageBox("分类号不能为空!");
		return ;
	}
	if(!JudgeIsbn(m_sIsbn))
	{
		MessageBox("该图书已经存在!");
		return;
	}
	InsertData();

	if(IDOK == MessageBox("继续添加吗?","添加成功!",MB_OKCANCEL))
	{
		m_sAuthor = _T("");
		m_sClass = _T("");
		m_sIsbn = _T("");
		m_sName = _T("");
		m_sPub = _T("");
		UpdateData(false);
	}
	else
	{
		CDialog::OnOK();
	}
}

BOOL CAddTitleDlg::JudgeIsbn(CString strIsbn)
{
	
	_variant_t var;
	
	//设置SELECT语句
	CString strSQL;
	strSQL.Format( "SELECT * FROM TitleInfo WHERE TitleIsbn = '%s'",strIsbn);
	_bstr_t vSQL =strSQL;
	
	_RecordsetPtr pRecordset;
	pRecordset = m_AdoConn.GetRecordSet(vSQL);

	BOOL bRet;
	if (pRecordset->adoEOF != VARIANT_TRUE) 
	{
		bRet = false;
	}
	else
	{
		bRet = true;
	}

	return bRet;
}

void CAddTitleDlg::InsertData()
{
	CString strSQL("");
	try
	{
		strSQL.Format ("INSERT INTO TitleInfo(TitleIsbn,TitleName,TitlePub,TitleAuthor,TitleClass)\
		VALUES('%s','%s','%s','%s','%s')",	m_sIsbn,m_sName,m_sPub,m_sAuthor,m_sClass);

		_bstr_t vSQL =strSQL;
		
		m_AdoConn.ExecuteSQL(vSQL);
	}
	catch (_com_error e) 
	{
		CString errormessage;		
		errormessage.Format("自定义错误信息3:%s",e.ErrorMessage());		
		AfxMessageBox(errormessage);//显示错误信息
	}
}

void CAddTitleDlg::OnButtonreset() 
{
	m_sAuthor = _T("");
	m_sClass = _T("");
	m_sIsbn = _T("");
	m_sName = _T("");
	m_sPub = _T("");
	UpdateData(false);
	
}