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#import ADO\msado15.dll compiler error

Posted on 2004-10-10
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Last Modified: 2008-02-01
In my Visual. c++ application (.net) I am trying to manage a database with the ADO control.
In the .h file I have:
#define INITGUID
#import "c:\Program Files\Common Files\System\ADO\msado15.dll"
                  rename_namespace("ADOCG") rename ("EOF","EndOfFile")
using namespace ADOCG;
#include "icrsint.h"

class CCustomRs :
      public CADORecordBinding
{
public:
};

class CCustomRs :
      public CADORecordBinding
{
public:
};
And when I compile the projecte (dialog based), I get these error:
....MyApp\Debug\msado15.tlh(2374) : error C2059: syntax error : '-'
....MyAppDebug\msado15.tlh(2374) : error C2238: unexpected token(s) preceding ';'
....MyApp\CustomRs.h(3) : error C2501: 'rename_namespace' : missing storage-class or type specifiers

Can help, please?
Marco53
0
Comment
Question by:marco53
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6 Comments
 
LVL 34

Expert Comment

by:flavo
ID: 12274012
If you are using .Net, why not use the oledb class?
0
 

Author Comment

by:marco53
ID: 12274036
I am following a book "Visual C++ .NET " - Davis Chapman from Apogeo, and try to learning Visual C++.
What is the difference between ADO and oledb class?
Can I add and delete records from database?
Thanks
0
 
LVL 34

Expert Comment

by:flavo
ID: 12274046
Sure can.

If you are learning C++, have you considered C#??

In any case, i beleive all .Net languages can use the .net framework classes.. I must say i cant use C++ (bit of C# and compitent in dataAccess with VB .Net), ill see what i can do

Dave
0
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LVL 34

Accepted Solution

by:
flavo earned 1000 total points
ID: 12274054
Simple examples using the oledbCommand to access the db

//http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemDataOleDbOleDbConnectionClassConnectionStringTopic.asp

 void CreateOleDbConnection()
 {
    String* myConnString = S"Provider=SQLOLEDB;Data Source=localhost;Initial Catalog=Northwind;Integrated Security=SSPI;";
    OleDbConnection* myConnection = new OleDbConnection(myConnString);
    myConnection->Open();
    MessageBox::Show(String::Format( S"ServerVersion: {0}\nDataSource: {1}", myConnection->ServerVersion, myConnection->DataSource ));
    myConnection->Close();
 }

//http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemDataOleDbOleDbCommandClassTopic.asp

public:
void ReadMyData(String* myConnString)
{
   String* mySelectQuery = S"SELECT OrderID, CustomerID FROM Orders";
   OleDbConnection* myConnection = new OleDbConnection(myConnString);
   OleDbCommand* myCommand = new OleDbCommand(mySelectQuery,myConnection);
   myConnection->Open();
   OleDbDataReader* myReader = myCommand->ExecuteReader();
   try
   {
     while (myReader->Read())
    {
       Console::WriteLine(S"{0}, {1}", __box(myReader->GetInt32(0)), myReader->GetString(1));
    }
   }
   __finally
   {
    // always call Close when done reading.
    myReader->Close();
    // always call Close when done reading.
    myConnection->Close();
 }
}


Dave
0
 

Author Comment

by:marco53
ID: 12274064
I am an Assembler programmer!! Since few months I am facing VC.NET.Its very hard to enter in this world. But I need for my job!!
Thanks for help
0
 
LVL 34

Expert Comment

by:flavo
ID: 12274071
Just google MSDN for C++ oledbCommand and you'll find your feet :)

Good Luck!

Dave
0

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