unit5.cpp

来自「《C++Builder数据库程序设计》配书光盘 1.光盘内容 Read」· C++ 代码 · 共 47 行

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

#include <vcl.h>
#pragma hdrstop

#include "Unit5.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
ADOTable1->First();
while (ADOTable1->Eof != True)
{
if (ADOTable1->FieldValues["数量"]<500)
    {ADOTable1->Delete();}
else
    {ADOTable1->Next();}
}
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{
ADOTable1->First();
while (ADOTable1->Eof != True)
{
ADOTable1->Edit();
ADOTable1->FieldValues["数量"]=ADOTable1->FieldValues["数量"]+10;
if (MessageDlg("确认改变数据？", mtConfirmation, TMsgDlgButtons() << mbYes << mbNo, 0) == mrYes)
    {ADOTable1->Next();}
else
    {
    ADOTable1->Cancel();
    ADOTable1->Next();
    }
}
}
//---------------------------------------------------------------------------