1、首先定义一个数据库连接结构：
struct db
{
char Server[20];
char Database[20];
char UserId[20];
char Password[20];
};
2、生成数据库连接文件:
BOOL CUdlFile::CreateUdlFile(LPCTSTR lpFileName)
{
CFile fUdl;
BOOL bResult;
CString s1,s2,s3;
int m_Length;
//set value
s1="[oledb]";
s2="; Everything after this line is an OLE DB initstring";
s3.Format("Provider=SQLOLEDB.1;Password=%s;
Persist Security Info=True;
User ID=%s;Initial Catalog=%s;
Data Source=%s",
m_dbParameter.Password,
m_dbParameter.UserId,
m_dbParameter.Database,
m_dbParameter.Server);
//open file
bResult=fUdl.Open (lpFileName,CFile::modeCreate|CFile::modeWrite);
if(!bResult) return FALSE;
LPWSTR m_Buffer;
m_Buffer = (LPWSTR)malloc(2 * sizeof(WCHAR));
m_Buffer[0]=0xFEFF; //flag of UNICODE file
fUdl.Write (m_Buffer,2);
free(m_Buffer);
fUdl.Write (L"[oledb]",14); //14为[oldb]的长度X2
fUdl.Write(L"\r\n",4);
fUdl.Write (L"; Everything after this line is an OLE DB initstring",104); //104为字符串长度X2
fUdl.Write(L"\r\n",4);
m_Length=s3.GetLength ();
m_Buffer = (LPWSTR)malloc((m_Length + 1) * sizeof(WCHAR));
MultiByteToWideChar(CP_ACP, 0, s3, m_Length, m_Buffer, m_Length);
fUdl.Write (m_Buffer,s3.GetLength ()*2);
fUdl.Write(L"\r\n",4);
free(m_Buffer);
m_Buffer = NULL;
fUdl.Close ();
return TRUE;
}
3、删除数据库连接文件:
BOOL CUdlFile::DeleteUdlFile(LPCTSTR lpFileName)
{
return ::DeleteFile(lpFileName);
}
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计算机技术与应用 → 『 C/C++编程思想 』 → 动态生成数据库连接文件类
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2010/11/4 16:56:00
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动态生成数据库连接文件类
