Sample: ADOVC1 Simple ADO/VC++ Application

ID: Q220152

The information in this article applies to:

SUMMARY

The ADOVC1.exe sample is an ADO/Visual C++ console application that demonstrates #import of ADO.


MORE INFORMATION

The following file is available for download from the Microsoft Software Library:

ADOVC1.exe
Release Date: May-21-1999

For more information about downloading files from the Microsoft Software Library, please see the following article in the Microsoft Knowledge Base:
Q119591 How to Obtain Microsoft Support Files from Online Services


rickAdo.cpp 1949
rickAdo.dsp 3422
rickAdo.dsw 539
rickAdo.ncb 123904
rickAdo.opt 53760
rickAdo.plg 1214


After extracting the project (by running ADOVC1.exe), open the project with Visual C++. Change "DefaultDir=C:\\test;" in the connection string to the directory where the files are, or move the Authors.mdb file to the "C:\test" directory. There is also a connection string to the Pubs database if you have SQL Server 6.5 or 7.0.

The CREATEiNSTANCE macro is used to create the ADO Connection and Recordset objects. If the creation fails, the macro throws a _com_error exception, which is caught in the catch statement that wraps the code body.

If ADO is not installed in the default directory, you must change the #import statement to reflect its actual location.

It is not necessary to use the absolute path for the ADO .dll file. You can add the path to Visual Studio IDE from the Tools menu under Options. Click the Directory tab and add the path to the Library files list, which allows you to use the statement:

   #import "Msado15.dll"
You can read about the #import directive in the Visual C++ programmer's guide.

Although the sample program is only one page long, it covers all the basics of ADO from C++, without negelecting error handling.


REFERENCES

For additional information, please see the following articles in the Microsoft Knowledge Base:

Q182389 FILE: Adovcbm.exe ADO 1.5 with #import and Getrows/Bookmarks
Q184968 FILE: Adovcsp.exe Demonstrates Using Stored Procedures with ADO
Q186387 SAMPLE: Ado2atl.exe Returns ADO Interfaces from COM
Q181733 FILE: Adovcbtd.exe #import Using UpdateBatch and CancelBatch
Q200122 SAMPLE: ATL2ADO Returns Disconnected ADO Recordset

Additional query words: 


Keywords          : kbfile kbsample kbADO kbADO210 kbDatabase kbOLEDB kbVC600 kbGrpVCDB kbGrpMDAC 
Version           : WINDOWS:2.1; winnt:6.0
Platform          : WINDOWS winnt 
Issue type        : kbhowto

Last Reviewed: May 26, 1999