userdeldlg.cpp

学生信息管理的系统

// UserDelDlg.cpp : implementation file
//

#include "stdafx.h"
#include "member.h"
#include "UserDelDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CUserDelDlg dialog


CUserDelDlg::CUserDelDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CUserDelDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CUserDelDlg)
	m_UserName = _T("");
	m_UserPwd = _T("");
	//}}AFX_DATA_INIT
	flat=0;
}


void CUserDelDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CUserDelDlg)
	DDX_Control(pDX, IDLEFT, m_Left);
	DDX_Control(pDX, IDRIGHT, m_Right);
	DDX_Text(pDX, IDC_USER_NAME, m_UserName);
	DDV_MaxChars(pDX, m_UserName, 20);
	DDX_Text(pDX, IDC_USER_PWD, m_UserPwd);
	DDV_MaxChars(pDX, m_UserPwd, 20);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CUserDelDlg, CDialog)
	//{{AFX_MSG_MAP(CUserDelDlg)
	ON_BN_CLICKED(IDDEL, OnDel)
	ON_BN_CLICKED(IDLEFT, OnLeft)
	ON_BN_CLICKED(IDRIGHT, OnRight)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUserDelDlg message handlers

void CUserDelDlg::OnDel() 
{
	// TODO: Add your control notification handler code here
	if(MessageBox("确定删除这条记录？","删除确认",MB_YESNO|MB_ICONQUESTION)==IDYES)
   try
	{
	  if(m_UserRecordSet.IsOpen() && !m_UserRecordSet.IsEOF())
		{	
			//设置编辑当前记录
			m_UserRecordSet.Delete();
		
			AfxMessageBox("删除成功！");
			//更新完毕,关闭数据库
			if(m_UserRecordSet.IsOpen())
				m_UserRecordSet.Close();
		m_UserRecordSet.Open(CRecordset::snapshot,NULL,CRecordset::none);
			OnPaint();
		}
		else
		{	
			//关闭数据库
			if(m_UserRecordSet.IsOpen())
				m_UserRecordSet.Close();
			//提示用户
			AfxMessageBox("该记录不存在，无法删除！");
			return;
		}
	}
	catch(CDBException*e)
	{
		e->ReportError();
		return;
	}
	
	
}

void CUserDelDlg::OnCancel() 
{
	// TODO: Add extra cleanup here
	
	CDialog::OnCancel();
}

void CUserDelDlg::OnLeft() 
{
	// TODO: Add your control notification handler code here
        m_Right.EnableWindow(TRUE);
   try
   {   
	   m_UserRecordSet.MovePrev();
	   if(m_UserRecordSet.IsBOF())
	   {
		   m_Left.EnableWindow(FALSE);
		   m_UserRecordSet.MoveNext();
	   }
		
		OnPaint();

	}
	catch(CDBException*e)
	{
		e->ReportError();
		return;
	}
}

void CUserDelDlg::OnRight() 
{
	// TODO: Add your control notification handler code here
      m_Left.EnableWindow(TRUE);
 try
	{  m_UserRecordSet.MoveNext();  
	  if(m_UserRecordSet.IsEOF())
	  {
		  m_Right.EnableWindow(FALSE);
		  m_UserRecordSet.MovePrev();
	  }
	  
	  OnPaint();
  }
  catch(CDBException*e)
	{
		e->ReportError();
		return;
	}
}

void CUserDelDlg::OnPaint()
{

 try
	{
     m_UserName=m_UserRecordSet.m_UserName;
     m_UserPwd=m_UserRecordSet.m_UserPwd;
	}
  catch(CDBException*e)
	{
		e->ReportError ();
		return;
	}
  UpdateData(FALSE);
}

BOOL CUserDelDlg::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	if(m_UserRecordSet.IsOpen())
	     m_UserRecordSet.Close();
	 m_UserRecordSet.Open(CRecordset::snapshot,NULL,CRecordset::none);
     m_UserName=m_UserRecordSet.m_UserName;
     m_UserPwd=m_UserRecordSet.m_UserPwd;
	 UpdateData(FALSE);
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}