cjlrdlg.cpp

学生成绩管理系统,实现增加删除修改保存等功能

// CjlrDlg.cpp : implementation file
//

#include "stdafx.h"
#include "StuManage.h"
#include "CjlrDlg.h"
#include "CjlrSet.h"

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

/////////////////////////////////////////////////////////////////////////////
// CCjlrDlg dialog


CCjlrDlg::CCjlrDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCjlrDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCjlrDlg)
	m_Score = _T("");
	m_StuNo = _T("");
	m_CourseName = _T("");
	//}}AFX_DATA_INIT
}


void CCjlrDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCjlrDlg)
	DDX_Control(pDX, IDC_CJLR_LIST, m_cjList);
	DDX_Text(pDX, IDC_SCORE_EDIT, m_Score);
	DDX_Text(pDX, IDC_STUNUM_EDIT, m_StuNo);
	DDX_Text(pDX, IDC_COURSENO_EDIT, m_CourseName);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CCjlrDlg, CDialog)
	//{{AFX_MSG_MAP(CCjlrDlg)
	ON_BN_CLICKED(IDC_ADD_BUTTON, OnAddButton)
	ON_BN_CLICKED(IDC_SAVE_BUTTON, OnSaveButton)
	ON_BN_CLICKED(IDC_DELETE_BUTTON, OnDeleteButton)
	ON_BN_CLICKED(IDC_MODIFY_BUTTON, OnModifyButton)
	ON_BN_CLICKED(IDC_CANCEL, OnCancel)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCjlrDlg message handlers

BOOL CCjlrDlg::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	m_cjList.InsertColumn(0,"成绩编号");
	m_cjList.InsertColumn(1,"学号");
	m_cjList.InsertColumn(2,"课程名称");
	m_cjList.InsertColumn(3,"成绩");
	CRect rect;
	m_cjList.GetWindowRect(&rect);
	int wid=rect.right-rect.left;
	m_cjList.SetColumnWidth(0,wid/4);
    m_cjList.SetColumnWidth(1,wid/4);
	m_cjList.SetColumnWidth(2,wid/4);
	m_cjList.SetColumnWidth(3,wid/4);
	m_cjList.SetExtendedStyle(LVS_EX_FULLROWSELECT);
	RefreshList();
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CCjlrDlg::RefreshList()
{
    if(!m_database.IsOpen()) {
		m_database.Open(_T("xscjgl"));
	}
	m_cjList.DeleteAllItems();
    CCjlrSet m_CjlrSet(&m_database);
	CString strSQL;
	strSQL.Format("select * from xscj");
	m_database.ExecuteSQL(strSQL);
	m_CjlrSet.Open(AFX_DB_USE_DEFAULT_TYPE,strSQL);
	if(m_CjlrSet.GetRecordCount()!=0)
		m_CjlrSet.MoveFirst();
	int i=0;
	while(!m_CjlrSet.IsEOF()) {
		CString temp;
		m_CjlrSet.GetFieldValue("ScoreID",temp);
		m_cjList.InsertItem(i,temp);
		m_cjList.SetItemText(i,1,m_CjlrSet.m_StuNo);
		m_cjList.SetItemText(i,2,m_CjlrSet.m_CourseName);
		m_cjList.SetItemText(i,3,m_CjlrSet.m_Score);
		m_CjlrSet.MoveNext();
		i++;
	}
	m_CjlrSet.Close();
}

void CCjlrDlg::OnAddButton() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	//m_database.Close();
	CCjlrSet m_CjlrSet;
	if(!UpdateData())
		return;
	if(m_StuNo.GetLength()==0) {
		MessageBox("请输入学号!");
	    return;
	}
	if(m_CourseName.GetLength()==0) {
		MessageBox("请输入课程名称!");
		return;
	}
	CString strSQL;
	int flag=0;
	int i=1;
	while(!flag) {
		CCjlrSet m_CjlrSet(&m_database);
		strSQL.Format("select * from xscj where ScoreID=%d",i);
		m_CjlrSet.Open(AFX_DB_USE_DEFAULT_TYPE,strSQL);
		if(m_CjlrSet.GetRecordCount()==0) {
			strSQL.Format("insert into xscj values(%d,\'%s',\'%s',\'%s')",i,m_StuNo,m_CourseName,m_Score);
			m_database.ExecuteSQL(strSQL);
			m_CjlrSet.Close();
			m_database.Close();	
			RefreshList();
			flag=1;
		}
		i++;
	}
	//CDialog::OnOK();	
}

void CCjlrDlg::OnSaveButton() 
{
	// TODO: Add your control notification handler code here
	CCjlrSet m_CjlrSet(&m_database);
	m_CjlrSet.m_StuNo=m_StuNo;
	m_CjlrSet.m_CourseName=m_CourseName;
	m_CjlrSet.m_Score=m_Score;
	m_CjlrSet.Close();
	RefreshList();
	CDialog::OnOK();
}

void CCjlrDlg::OnDeleteButton() 
{
	// TODO: Add your control notification handler code here
	CCjlrSet m_CjlrSet;
	int i=m_cjList.GetSelectionMark();
	CString strSQL;
    int keyid=atoi(m_cjList.GetItemText(i,0));
	if(keyid<0)
	{
		MessageBox("请选择您要删除的一行！");
	}
	else
	{
		if(MessageBox("您确定要删除该记录吗?","是否删除",MB_OKCANCEL|MB_ICONQUESTION)==IDOK)
		{
			strSQL.Format("delete from xscj where ScoreID=%d",keyid);
			m_database.ExecuteSQL(strSQL);
			m_database.Close();
			RefreshList();
		}
	}
}

void CCjlrDlg::OnModifyButton() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	CCjlrSet m_CjlrSet;
	CString strSQL;
	int flag=0;
	//int i=atoi(m_stuNo);
	while(!flag) {
		CCjlrSet m_CjlrSet(&m_database);
		strSQL.Format("update xscj set CourseName='%s',Score='%s' where StuNo='%s'",m_CourseName,m_Score,m_StuNo);
		m_database.ExecuteSQL(strSQL);
		m_database.Close();	
		RefreshList();
		flag=1;	
	}
}

void CCjlrDlg::OnCancel() 
{
	// TODO: Add your control notification handler code here
	OnOK();
}