Append-Methoden für Columns und Tables, Name-Eigenschaft (VC++-Beispiel)

Der folgende Code veranschaulicht, wie eine neue Tabelle erstellt wird.

// BeginCreateTableCpp.cpp  
// compile with: /EHsc  
#import "msadox.dll" no_namespace  
  
#include "iostream"  
using namespace std;  
  
// Function declarations  
inline void TESTHR(HRESULT x) {if FAILED(x) _com_issue_error(x);};  
  
int main() {  
   if ( FAILED(::CoInitialize(NULL) ) )  
      return -1;  
  
   HRESULT hr = S_OK;  
  
   // Define ADOX object pointers, initialize pointers.  These are in ADOX namespace.  
   _CatalogPtr m_pCatalog = NULL;  
   _TablePtr m_pTable = NULL;  
  
   try {  
      TESTHR(hr = m_pCatalog.CreateInstance(__uuidof(Catalog)));  
  
      // Open the catalog  
      m_pCatalog->PutActiveConnection("Provider='Microsoft.JET.OLEDB.4.0';data source='c:\\Northwind.mdb';");  
  
      TESTHR(hr = m_pTable.CreateInstance(__uuidof(Table)));  
      m_pTable->PutName("MyTable");  
      m_pTable->Columns->Append("Column1",adInteger,0);  
      m_pTable->Columns->Append("Column2",adInteger,0);  
      m_pTable->Columns->Append("Column3",adVarWChar,50);  
      m_pCatalog->Tables->Append(_variant_t((IDispatch *)m_pTable));  
      printf("Table 'MyTable' is added.\n");  
  
      // Delete the table as this is a demonstration.  
      m_pCatalog->Tables->Delete("MyTable");  
      printf("Table 'MyTable' is deleted.\n");  
   }  
  
   catch(_com_error &e) {  
      // Notify the user of errors if any.  
      _bstr_t bstrSource(e.Source());  
      _bstr_t bstrDescription(e.Description());  
  
      printf("\n\tSource :  %s \n\tdescription : %s \n ", (LPCSTR)bstrSource, (LPCSTR)bstrDescription);  
   }  
  
   catch(...) {  
      cout << "Error occurred in include files...."<< endl;  
   }  
  
   ::CoUninitialize();  
}  

Siehe auch

Append-Methode (ADOX Columns)
Append-Methode (ADOX Tables)
Name-Eigenschaft (ADOX)