vc写的测试数据库连接

				 测试数据库连接
				
				
				_ConnectionPtr m_pConnection;
				m_pConnection=NULL;
				if(!oleinit)
				{
				try
				{
				if (!AfxOleInit())
				{
				//AfxMessageBox("ole 初始化错误");
				return false;
				}
				}
				catch(...)
				{}
				}
				oleinit=true;
				m_pConnection.CreateInstance(__uuidof(Connection));
				// CString dbPath=m_AppPath+"\\DATABASE\\DB_P.mdb";
				m_strConnection = _T("Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=ahryDB;Data Source=LH”);
				try 
				{ 
				//打开本地Access库DZBL边坡数据库.mdb,可以做成活得
				m_pConnection->Open((LPCTSTR)m_strConnection,
				"","",adModeUnknown);
				}
				catch(_com_error e)
				{
				//AfxMessageBox("数据库连接失败，请确认数据库‘DB_P.mdb’路径!");
				return false;
				} 
				m_pConnection=NULL;
				return true;