users.cpp

ADO数据库连接的程序 请赶紧通过 我需要下载东西

// Users.cpp: implementation of the CUsers class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "Ado.h"
#include "Users.h"
#include "ADOConn.h"

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

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CUsers::CUsers()
{
	UserId = 0;
	UserName = "";
	UserPwd = "";
}

CUsers::~CUsers()
{

}

//设置和读取成员变量值
int CUsers::GetUserId()
{
	return UserId;
}

void CUsers::SetUserId(int vUserId)
{
	UserId = vUserId;
}

CString CUsers::GetUserName()
{
	return UserName;
}

void CUsers::SetUserName(CString vUserName)
{
	UserName = vUserName;
}

CString CUsers::GetUserPwd()
{
	return UserPwd;
}

void CUsers::SetUserPwd(CString vUserPwd)
{
	UserPwd = vUserPwd;
}

//数据库操作
void CUsers::sql_insert()
{	
	//连接数据库
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	// 设置INSERT语句
	_bstr_t vSQL;
	vSQL = "INSERT INTO Users (UserName, UserPwd) VALUES('"
		+ UserName + "','" + UserPwd + "')";
	
	//执行INSERT语句
	m_AdoConn.ExecuteSQL(vSQL);	
	//断开与数据库的连接
	m_AdoConn.ExitConnect();
}

void CUsers::sql_update(CString cUserId)
{
	//连接数据库
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//设置UPDATE语句
	_bstr_t vSQL;
	vSQL = "UPDATE Users SET UserName='" + UserName 
		+ "', UserPwd='" + UserPwd +"' WHERE UserId=" + cUserId;
	//执行UPDATE语句
	m_AdoConn.ExecuteSQL(vSQL);	
	//断开与数据库的连接
	m_AdoConn.ExitConnect();
}

void CUsers::sql_delete(CString cUserId)
{
	//连接数据库
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//设置DELETE语句
	_bstr_t vSQL;
	vSQL = "DELETE FROM Users WHERE UserId=" + cUserId;
	//执行DELETE语句
	m_AdoConn.ExecuteSQL(vSQL);	
	//断开与数据库的连接
	m_AdoConn.ExitConnect();
}

//根据用户编号读取所有字段值
void CUsers::GetData(CString cUserId)
{
	//连接数据库
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//设置SELECT语句
	_bstr_t vSQL;
	vSQL = "SELECT * FROM Users WHERE UserId=" + cUserId;
	//执行SELETE语句
	_RecordsetPtr m_pRecordset;
	m_pRecordset = m_AdoConn.GetRecordSet(vSQL);

	//返回各列的值
	if (m_pRecordset->adoEOF == 1)
		CUsers();
	else
	{
		UserId = atoi(cUserId);
		UserName = (LPCTSTR)(_bstr_t)m_pRecordset->GetCollect("UserName");
		UserPwd = (LPCTSTR)(_bstr_t)m_pRecordset->GetCollect("UserPwd");
	}
	//断开与数据库的连接
	m_AdoConn.ExitConnect();
}