chosecoursectr.cpp

教学管理系统

// ChoseCourseCtr.cpp : implementation file
//

#include "stdafx.h"
#include "COdbc.h"
#include "ChoseCourseCtr.h"
#include <afxdb.h>
#include "RecordCourse.h"
#include "ChoseCourse.h"

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

/////////////////////////////////////////////////////////////////////////////
// CChoseCourseCtr dialog


CChoseCourseCtr::CChoseCourseCtr(CWnd* pParent /*=NULL*/)
	: CDialog(CChoseCourseCtr::IDD, pParent)
{
	//{{AFX_DATA_INIT(CChoseCourseCtr)
	m_courseid = _T("");
	m_studentid = _T("");
	m_sidcheck = FALSE;
	m_cidcheck = FALSE;
	//}}AFX_DATA_INIT
}


void CChoseCourseCtr::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CChoseCourseCtr)
	DDX_Control(pDX, IDC_COURSE_INFO, m_tList);
	DDX_Text(pDX, IDC_COURSE_NAME, m_courseid);
	DDX_Text(pDX, IDC_STUDENT_NAME, m_studentid);
	DDX_Check(pDX, IDC_SNAMECHECK, m_sidcheck);
	DDX_Check(pDX, IDC_CNAMECHECK, m_cidcheck);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CChoseCourseCtr, CDialog)
	//{{AFX_MSG_MAP(CChoseCourseCtr)
	ON_BN_CLICKED(IDC_COURSE_ADD, OnCourseAdd)
	ON_BN_CLICKED(IDC_COURSE_DEL, OnCourseDel)
	ON_BN_CLICKED(IDC_COURSE_SLECET, OnCourseSlecet)
	ON_BN_CLICKED(IDC_CLEAN, OnClean)
	ON_BN_CLICKED(IDC_COURSE_CONCEL, OnCourseConcel)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CChoseCourseCtr message handlers

void CChoseCourseCtr::OnCourseAdd() 
{
	// TODO: Add your control notification handler code here
	UpdateData(true);
	if(m_studentid.IsEmpty()||m_courseid.IsEmpty())
	{
		MessageBox("please input id!");
		return;
	}
	CDatabase db;
	BOOL bRtn;
	CString sql,tmp;
	try {
	bRtn = db.OpenEx("DSN=教学管理系统;UID=sa", CDatabase::noOdbcDialog);
	}catch (CDBException *pDBEx) {
	pDBEx->ReportError();
	}catch (CMemoryException *pMemEx) {
	pMemEx->ReportError();
	}
	if (!bRtn)
	printf("连接数据库失败!");
	sql = "insert into student_lesson (student_id,lesson_id) values ('";
	sql +=m_studentid;
	sql +="','";
	sql +=m_courseid;
	sql +="');" ;
	try {
	db.ExecuteSQL(sql);
	} catch (CDBException *pDBEx) {
	pDBEx->ReportError();
	}
	db.Close();
}

void CChoseCourseCtr::OnCourseDel() 
{
	// TODO: Add your control notification handler code here
	UpdateData(true);
	if(m_courseid.IsEmpty())
	{
		MessageBox("please input id!");
		return;
	}
	CDatabase db;
	BOOL bRtn;
	CString sql,tmp;
	try {
	bRtn = db.OpenEx("DSN=教学管理系统;UID=sa", CDatabase::noOdbcDialog);
	}catch (CDBException *pDBEx) {
	pDBEx->ReportError();
	}catch (CMemoryException *pMemEx) {
	pMemEx->ReportError();
	}
	if (!bRtn)
	printf("连接数据库失败!");
	if(m_studentid.IsEmpty()&&m_courseid.IsEmpty())
	{
		MessageBox("input tiaojian!");
		return;
	}
	sql = "delete from student_lesson where ";
	if(!m_studentid.IsEmpty())
	{
		sql +="student_id ='";
		sql +=m_studentid;
		sql +="' and";
	}
	if(!m_courseid.IsEmpty())
	{
		sql +=" lesson_id='";
		sql +=m_courseid;
		sql +="'";
	}
	sql.TrimRight("and");
	try {
	db.ExecuteSQL(sql);
	} catch (CDBException *pDBEx) {
	pDBEx->ReportError();
	}
	db.Close();
}

void CChoseCourseCtr::OnCourseSlecet() 
{
	// TODO: Add your control notification handler code here
	int i=0;
	int j=0;
	CDatabase db;
	BOOL bRtn;
	CString sql;
	UpdateData(true);
	sql = "";
	if(!m_studentid.IsEmpty())
	{	
		sql +="Select * From student_lesson where student_id='";
		sql +=m_studentid;
		sql +="'";
		i=1;
		if(m_sidcheck==1)
		{
			sql +=" union ";
			i=0;
		} 
		j=1;
	}
	if(!m_courseid.IsEmpty())
	{		
		if(m_cidcheck==0)
		{
			if(i==1)
				sql +=" and ";
			else sql +="Select * From student_lesson where ";
			sql +="lesson_id='";
			sql +=m_courseid;
			sql +="'";
			i=1;
			j=1;
		}
		else
		{
				sql ="Select * From student_lesson where lesson_id='"+m_courseid+"' \
					union "+sql;
			j=1;
		}
	}

	if(j==0)
	{	
		MessageBox("please input tiaojian!");
		return;
	}
	sql.TrimRight("union ");

	CChoseCourse rs(&db);
	try {
	bRtn = rs.Open(CRecordset::snapshot,sql);
	} catch(CDBException *pDBEx) {
	pDBEx->ReportError();
	} catch(CMemoryException *pMemEx) {
	pMemEx->ReportError();
	}
	if(!bRtn) {
	AfxMessageBox("Query table failed!",MB_OK|MB_ICONERROR);
	return ;
	}
	/* 4、逐条获取查询结果*/
	for(rs.MoveFirst();!rs.IsEOF();rs.MoveNext()) {
	// TODO: Add code here
	}
	/* 5、关闭记录集、数据库*/

		/* 清除列表中原有的项*/
	CString tmp;
	m_tList.DeleteAllItems();
	/* 在列表中显示纪录*/
	LVITEM item;
	int nRow=0;
	item.mask = LVIF_TEXT;
	item.state = LVIS_SELECTED;
	item.stateMask = LVIS_SELECTED;
	item.lParam = 1;
	item.iIndent = 0;
	for(rs.MoveFirst();!rs.IsEOF();rs.MoveNext(),nRow++)
	{
	
		item.iItem = nRow;
		int	iSubItem = 0;
		item.iSubItem = iSubItem++;
		item.pszText = (char*)(LPCTSTR)(rs.m_student_id);
		item.cchTextMax = strlen(item.pszText);
		m_tList.InsertItem(&item); // 第一列应用InsertItem()

		item.iSubItem = iSubItem++;
		item.pszText = (char*)(LPCTSTR)(rs.m_lesson_id);
		item.cchTextMax = strlen(item.pszText);
		m_tList.SetItem(&item); // 其余列用SetItem()
	}
	
	rs.Close();
	db.Close();
}

void CChoseCourseCtr::OnClean() 
{
	// TODO: Add your control notification handler code here
	m_tList.DeleteAllItems();
	m_courseid = _T("");
	m_studentid = _T("");
	m_sidcheck = FALSE;
	m_cidcheck = FALSE;
	UpdateData(false);
}

void CChoseCourseCtr::OnCourseConcel() 
{
	// TODO: Add your control notification handler code here
	CDialog::OnCancel();
}

BOOL CChoseCourseCtr::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	LPTSTR lpszCols[]={"学员ID","课程ID",NULL}; // 列标题
	int nWidth[] = {90,90,0}; // 列宽度
	LV_COLUMN lvcol;
	lvcol.mask = LVCF_FMT | LVCF_WIDTH | LVCF_TEXT | LVCF_SUBITEM;
	lvcol.fmt = LVCFMT_LEFT;
	for(int i=0;lpszCols[i]!=NULL;i++)
	{
		lvcol.cx = nWidth[i];
		lvcol.pszText = lpszCols[i];
		m_tList.InsertColumn(i,&lvcol);
	}

	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}