!!!VC++.NET Express から Oracleへ接続
[VC++.NET][Oracle]

*[.NET Developer Center|http://otn.oracle.co.jp/tech/dotnet/index.html]
*[Data Provider for .NET開発者ガイド|http://otndnld.oracle.co.jp/document/products/oracle10g/101/doc_v6/win.101/B15519-01/toc.htm]
!!ODP.NETの入手
::入手先
http://otn.oracle.co.jp/tech/dotnet/index.html から Oracle Data Provider for .NET 2.0 10.2.0.2.2 をダウンロードしてインストール

!VC++の設定
プロジェクトを作成し、参照設定を行う
{{ref_image vc_ora_01.JPG}}

*Oracle.DataAccess.Client;
*Oracle.DataAccess.Types;

!接続
  using namespace System::Diagnostics;
  using namespace Oracle::DataAccess::Client;
  using namespace Oracle::DataAccess::Types;
                   :
 OracleConnection^ conn 
  = gcnew OracleConnection
     (L"user id=****;password=****;data source=[host name]/[service name]");   
              
 conn->Open();
 
 Debug::Print(L"Oracle Connection Opened.");
 
 OracleCommand^ cmd = gcnew OracleCommand(L"select * from all_tables");
 cmd->Connection = conn;
 
 OracleDataReader^ reader = cmd->ExecuteReader();
 
 String^ ret = L"";
 while (reader->Read()) {
     ret += "\n" + reader->GetString(1);
 }
 
 MessageBox::Show(ret);
 
 conn->Close();
 
::結果
{{ref_image vc_ora_02.JPG}}