additemdlg.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

// AddItemDlg.cpp : implementation file
//

#include "stdafx.h"
#include "db.h"
#include "AddItemDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAddItemDlg dialog


CAddItemDlg::CAddItemDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CAddItemDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CAddItemDlg)
	m_sIsbn = _T("");
	m_sItem = _T("");
	//}}AFX_DATA_INIT
}


void CAddItemDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAddItemDlg)
	DDX_Text(pDX, IDC_ISBN, m_sIsbn);
	DDX_Text(pDX, IDC_ITEMID, m_sItem);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CAddItemDlg, CDialog)
	//{{AFX_MSG_MAP(CAddItemDlg)
	ON_BN_CLICKED(IDC_ADDITEM, OnAdditem)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CAddItemDlg message handlers

BOOL CAddItemDlg::JudgeItem()
{

	_variant_t var;
	
	//设置SELECT语句
	CString strSQL;
	strSQL.Format( "SELECT * FROM ItemInfo WHERE ItemID = '%s'",m_sItem);

	_bstr_t vSQL =strSQL;
	
	_RecordsetPtr pRecordset;
	pRecordset = m_AdoConn.GetRecordSet(vSQL);

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

	return bRet;

}

BOOL CAddItemDlg::JudgeIsbn()
{
	CString strIsbn = m_sIsbn;
	
	_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 CAddItemDlg::OnAdditem() 
{
	UpdateData();
	if(m_sIsbn.GetLength()==0)
	{
		MessageBox("ISBN 为空");
		return ;
	}
	if(m_sItem.GetLength()==0)
	{
		MessageBox("ItemID为空");
		return ;
	}
	if(JudgeIsbn())
	{
		MessageBox("ISBN 不存在");
		return ;
	}
	if(JudgeItem())
	{
		MessageBox("ItemID存在");
		return ;
	}
	InsertData();

	if(IDOK == MessageBox("继续添加吗?","添加成功!",MB_OKCANCEL))
	{
		m_sItem="";
		UpdateData(false);
	}
	else
	{
		CDialog::OnOK();
	}

}


void CAddItemDlg::InsertData()
{
	CString strSQL("");
	try
	{
		strSQL.Format ("INSERT INTO ItemInfo(ItemIsbn,ItemID,ItemLoanType)\
		VALUES('%s','%s','%d')",	m_sIsbn,m_sItem,0);

		_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 CAddItemDlg::SetItemIsbn(CString strItemIsbn)
{
	m_sIsbn=strItemIsbn;

}