1 题目要求

设计一个学生学习成绩信息管理系统，ODBC方式连接。

2 功能需求

用户管理

：新增用户，删除用户

学生信息管理

：增加学生信息，删除学生信息，查询学生信息

学生成绩管理

：录入学生成绩，修改学生成绩，删除学生成绩

计算总评

：计算总评功能的实现

voidCStudentbaView::OnButton1(){// TODO: Add your control notification handler code here
m_pSet->m_SumScore=long(m_pSet->m_NormalScore*0.1+m_pSet->m_MidScore*0.2+m_pSet->m_FinalScore*0.7);UpdateData(FALSE);}

3 总体设计

系统模块

4 详细设计

在原来的基础上进行了完善。实验指导书上有的内容省略。

学生成绩查改删功能的实现：

在资源视图下添加一个对话框，添加ID，添加相应控件，如下图：

为IDD_DIALOG_SEARCH添加一个新类 SEARCH 并添加相应映射变量：

重载OnInitDialog()函数：

BOOLSEARCH::OnInitDialog(){
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	m_ctrList.InsertColumn(0," 序号");
	m_ctrList.InsertColumn(1," 学号");
	m_ctrList.InsertColumn(2," 姓名");
	m_ctrList.InsertColumn(3," 科目");
	m_ctrList.InsertColumn(4," 成绩");
	m_ctrList.InsertColumn(5," 补考成绩");
	m_ctrList.InsertColumn(6," 缺考标志");
	m_ctrList.SetColumnWidth(0,60);
	m_ctrList.SetColumnWidth(1,80);
	m_ctrList.SetColumnWidth(2,80);
	m_ctrList.SetColumnWidth(3,100);
	m_ctrList.SetColumnWidth(4,80);
	m_ctrList.SetColumnWidth(5,80);
	m_ctrList.SetColumnWidth(6,60);
	m_ctrList.SetExtendedStyle(LVS_EX_FULLROWSELECT|LVS_EX_GRIDLINES);
	CStringstrSQL="select * from score";
	RefreshData(strSQL);
	returnTRUE;// return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

为SEARCH类添加RefreshData(strSQL)函数：

voidSEARCH::RefreshData(CStringstrSQL){
	m_ctrList.DeleteAllItems();
	m_ctrList.SetRedraw(FALSE);
	UpdateData(TRUE);
	if(!m_recordset.Open(AFX_DB_USE_DEFAULT_TYPE,strSQL))
	{
		MessageBox(" 打开数据库失败!"," 数据库错误",MB_OK);
		return;
	}
	inti=0;
	charbuffer[20];
	while(!m_recordset.IsEOF())
	{
		_ltoa(m_recordset.m_ID,buffer,10);
		m_ctrList.InsertItem(i,buffer);
		m_ctrList.SetItemText(i,1,m_recordset.m_code);
		m_ctrList.SetItemText(i,2,m_recordset.m_name);
		m_ctrList.SetItemText(i,3,m_recordset.m_subject);
		_ltoa(m_recordset.m_score,buffer,10);
		m_ctrList.SetItemText(i,4,buffer);
		_ltoa(m_recordset.m_makeup_score,buffer,10);
		m_ctrList.SetItemText(i,5,buffer);
		m_ctrList.SetItemText(i,6,m_recordset.m_absent);
		i++;
		m_recordset.MoveNext();
	}
	m_recordset.Close();
	m_ctrList.SetRedraw(TRUE);}

为查询添加消息响应函数：

voidSEARCH::OnBnClickedButtonSearch(){
	// TODO: Add your control notification handler code here
	UpdateData();
	CStringstrSQL,strTemp;
	strTemp="";
	BOOLbHaveCon=FALSE;
	if(m_strSubject!="")
	{
		strSQL.Format("select * from score where subject = '%s' ",m_strSubject);
		bHaveCon=TRUE;
	}
	if(m_strName!="")
	{
		if(bHaveCon)
		{
			strTemp.Format(" name = '%s' ",m_strName);
			strSQL=strSQL+" and "+strTemp;
		}
		else
		{
			strSQL.Format("select * from score where name = '%s' ",m_strName);
		}
		bHaveCon=TRUE;
	}
	if(m_strClass!="")
	{
		if(bHaveCon)
		{
			strTemp.Format(" class = '%s' ",m_strClass);
			strSQL=strSQL+" and "+strTemp;
		}
		else
		{
			strSQL.Format("select * from score where class = '%s' ",m_strClass);
		}
		bHaveCon=TRUE;
	}
	if(!bHaveCon)
	{
		strSQL="select * from score";
	}
	RefreshData(strSQL);}

为删除添加消息响应函数：

voidSEARCH::OnButton1Delete(){
	// TODO: Add your control notification handler code here
	inti=m_ctrList.GetSelectionMark();
	if(0>i)
	{
		AfxMessageBox(" 请选择一条记录进行查看！");
		return;
	}
	CStringstrSQL;
	/*strSQL.Format("select * from score where ID = '%s'",m_ctrList.GetItemText(i,0));*/
	/*	strSQL.Format("select * from score where ID = '%d'",m_ctrList.GetSelectionMark());*/
	strSQL.Format("select * from score where ID=%s",m_ctrList.GetItemText(i,0));
	if(!m_recordset.Open(AFX_DB_USE_DEFAULT_TYPE,strSQL))
	{
		AfxMessageBox(" 打开数据库失败!");
		return;
	}
	m_recordset.Delete();
	m_recordset.Close();
	strSQL="select * from score";
	RefreshData(strSQL);}

在资源视图下添加一个对话框IDD_DIALOG_SCORE_UP

添加相应控件，如下图：

为其添加一个类：SCORE_UP_Dialog 并对应相应变量：

在SEARCH.h添加：#include “ScoreSet.h”

并声明一个变量：CScoreSet m_recordset;

在SEARCH类添加：#include “SCORE_UP_Dialog.h”

为修改添加消息响应函数：

voidSEARCH::OnButton1Modify(){
	// TODO: Add your control notification handler code here
	SCORE_UP_DialogDlg;
	UpdateData();
	inti=m_ctrList.GetSelectionMark();
	if(0>i)
	{
		AfxMessageBox(" 请选择一条记录进行修改！");
		return;
	}/*	Dlg.m_strCode=m_ctrList.GetItemText(i,0);*//*	Dlg.m_ID=m_ctrList.GetItemText(i,0);*/
	if(IDOK==Dlg.DoModal())
	{// 修改记录
		CStringstrSQL;
	/*	strSQL.Format("select * from student where code = '%s'",Dlg.m_strCode);*/
		strSQL.Format("select * from score where ID=%s",m_ctrList.GetItemText(i,0));/*		strSQL.Format("select * from score where ID=%s",Dlg.m_ID);*/
		if(!m_recordset.Open(AFX_DB_USE_DEFAULT_TYPE,strSQL))
		{
			AfxMessageBox(" 打开数据库失败!");
			return;
		}
		m_recordset.Edit();/*		CString m_str_Score;*/// 		m_recordset.m_code =Dlg.m_strCode ;
// 		m_recordset.m_name =Dlg.m_strName ;
// 		m_recordset.m_sex =Dlg.m_strSex ;
// 		m_recordset.m_birthday =Dlg.m_tmBirth ;
// 		m_recordset.m_department =Dlg.m_strDepartment ;
// 		m_recordset.m_major =Dlg.m_strMajor ;
//		m_recordset.m_class =Dlg.m_strClass ;
// 		m_recordset.m_phone =Dlg.m_strPhone ;
// 		m_recordset.m_address =Dlg.m_strAddress ;
/*		m_recordset.m_ID=Dlg.Dlg.m_ID;*//*		m_recordset.m_ID=m_ctrList.GetItemText(i,0);*//*		itoa(Dlg.m_strSCore,m_strScore,10);*/
		m_recordset.m_score=Dlg.m_str_Score;
		m_recordset.m_makeup_score=Dlg.m_str_Makeup;
		m_recordset.Update();
		m_recordset.Close();
		strSQL="select * from score ";
		RefreshData(strSQL);
	}}

调用该对话框：

为StudentView.cpp添加包含“SEARCH.h”的语句。为CStudentView类添加菜单ID_SCORE_SEARCH的命令消息响应函数：voidCStudentView::OnScoreSearch(){
	// TODO: Add your command handler code here
	SEARCHdlg;
	dlg.DoModal();}