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VC++Á¬½ÓSQLServer
/*
*Á¬½ÓSQL
*/
void CMFCSQLDlg::OnButton3()
{
       // TODO: Add your control notification handler code here
       _ConnectionPtr   m_pConnection;
// ÔÚÓ¦ÓóÌÐòµÄInitInstanceº¯ÊýÀï¼ÓÈë
      if(S_OK!=CoInitialize(NULL))  
      {  
         AfxMessageBox("³õʼ»¯COM¿â´íÎó!");
      }else
         {
            AfxMessageBox("³õʼ»¯COM¿â³É¹¦!");
         }
//  Á¬½ÓÊý¾Ý¿â£º  
HRESULT  hr; //·µ»Ø½á¹û±äÁ¿
try  
{  
      hr=m_pConnection.CreateInstance("ADODB.Connection"); //´´½¨Connection¶ÔÏó
      if(SUCCEEDED(hr))  
      {  
//hr=m_pConnection->Open("Provider=SQLOLEDB;Server=808644DA83B446C\SQLEXPRESS;Database=ChinabaseSQLServer;UserID=sa;pwd=123","","",adModeUnknown);   //;Integrated Security=SSPI
m_pConnection->Open("Provider=SQLOLEDB.1;Server=808644DA83B446C\\SQLEXPRESS;DATABASE=ChinabaseSQLServer;UID=sa;PWD=123;","","",adModeUnknown);
MessageBox("Á¬½ÓSQLÔËÐгɹ¦!","³É¹¦",MB_OK);
 
              _CommandPtr m_pCommand;
              _RecordsetPtr m_pRecordset;
              m_pCommand.CreateInstance("ADODB.Command");
 
              _variant_t vNULL;
              vNULL.vt = VT_ERROR;
    


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#include <comutil.h>
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