uchange.cpp

图书管理系统,主要功能有图书的借还,增加,查询等

// UCHANGE.cpp : implementation file
//

#include "stdafx.h"
#include "图书管理系统.h"
#include "UCHANGE.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
extern CMyApp theApp;
/////////////////////////////////////////////////////////////////////////////
// CUCHANGE dialog


CUCHANGE::CUCHANGE(CWnd* pParent /*=NULL*/)
	: CDialog(CUCHANGE::IDD, pParent)
{
	//{{AFX_DATA_INIT(CUCHANGE)
	m_new = _T("");
	m_new1 = _T("");
	m_old = _T("");
	m_uid = _T("");
	//}}AFX_DATA_INIT
}


void CUCHANGE::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CUCHANGE)
	DDX_Text(pDX, IDC_NEW, m_new);
	DDX_Text(pDX, IDC_NEW1, m_new1);
	DDX_Text(pDX, IDC_OLD, m_old);
	DDX_Text(pDX, IDC_UID, m_uid);
	//}}AFX_DATA_MAP
}


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

/////////////////////////////////////////////////////////////////////////////
// CUCHANGE message handlers

void CUCHANGE::OnOK() 
{
	UpdateData();
	if(m_uid.IsEmpty())
	{
		MessageBox("请输入读者编号");
		return;
	}
	if(m_old.IsEmpty())
	{
		MessageBox("请输入原密码");
		return;
	}
	if(m_new.IsEmpty())
	{
		MessageBox("请输入新密码");
		return;
	}
	if(m_new1.IsEmpty())
	{
		MessageBox("请再次确认新密码");
		return;
	}
	if(m_new.Compare(m_new1))
	{
		MessageBox("您两次输入的新密码不一致，请重新输入");
		m_new="";
		m_new1="";
		UpdateData(FALSE);
		GetDlgItem(IDC_NEW)->SetFocus();
		return;
	}
	sql.Format("select * from reader where readernumber='%s' and password='%s'",m_uid,m_old);
	connect();
	if(m_pRecordset->BOF)
	{
		MessageBox("您输入的用户名或密码不正确，请重新输入");
		m_uid="";
		m_old="";
		m_new="";
		m_new1="";
		UpdateData(FALSE);
		GetDlgItem(IDC_UID)->SetFocus();
		return;
	}
	else
	{
		try
		{
			sql.Format("update reader set password='%s' where readernumber='%s'",m_new1,m_uid);
			connect();
		}
		catch(_com_error *e)
		{
			AfxMessageBox(e->ErrorMessage());
		}
		MessageBox("修改成功");
		m_uid="";
		m_old="";
		m_new="";
		m_new1="";
		UpdateData(FALSE);
		GetDlgItem(IDC_UID)->SetFocus();

	}
	
	
}

void CUCHANGE::connect()
{
	m_pRecordset.CreateInstance(__uuidof(Recordset));
	try
	{
		m_pRecordset->Open(sql.AllocSysString(),
							theApp.m_pConnection.GetInterfacePtr(),	
							adOpenDynamic,
							adLockOptimistic,
							adCmdText);
	}
	catch(_com_error *e)
	{
		AfxMessageBox(e->ErrorMessage());
	}
}

void CUCHANGE::OnCancel() 
{
	CDialog::OnCancel();
}