unit3.cpp

《C++Builder数据库程序设计》配书光盘 1.光盘内容 Readme.txt 光盘使用说明 书中各章范例文件

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit3.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{
//声明变量
int ch,en,ma;
//取得语文成绩
ch=ADOTable1->Fields->Fields[2]->AsInteger;
//取得英语成绩
en=ADOTable1->Fields->Fields[3]->AsInteger;
//取得数学成绩
ma=ADOTable1->Fields->Fields[4]->AsInteger;
//计算总分，并显示于标签中
Label1->Caption=ma+en+ch;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{
//移至上一笔
ADOTable1->Prior();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button3Click(TObject *Sender)
{
//移至下一笔
ADOTable1->Next();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button4Click(TObject *Sender)
{
//移至第一笔
ADOTable1->First();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button5Click(TObject *Sender)
{
//移至最后一笔
ADOTable1->Last();
}
//---------------------------------------------------------------------------