unit8.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 "Unit8.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::ADOTable1BeforePost(TDataSet *DataSet)
{
//如果语文分数超过范围，显示信息窗口
if ((ADOTable1DSDesigner2->Value>100) || (ADOTable1DSDesigner2->Value<0))
{
//复原字段值
ADOTable1DSDesigner2->Value=ADOTable1DSDesigner2->OldValue;
//将数据验证错误的字段设为程序操作焦点
ADOTable1DSDesigner2->FocusControl();
//显示例外错误信息窗口
throw Exception(ADOTable1DSDesigner2->DisplayLabel+"分数超过范围");
}

//如果英语分数超过范围，显示信息窗口
if ((ADOTable1DSDesigner3->Value>100) || (ADOTable1DSDesigner3->Value<0))
{
//复原字段值
ADOTable1DSDesigner3->Value=ADOTable1DSDesigner3->OldValue;
//将数据验证错误的字段设为程序操作焦点
ADOTable1DSDesigner3->FocusControl();
//显示例外错误信息窗口
throw Exception(ADOTable1DSDesigner3->DisplayLabel+"分数超过范围");
}

//如果数学分数超过范围，显示信息窗口
if ((ADOTable1DSDesigner4->Value>100) || (ADOTable1DSDesigner4->Value<0))
{
//复原字段值