Using database Parameter : OleDbCommand « Database ADO.net « Visual C++ .NET

1. Visual C++ .NET
2. Database ADO.net
3. OleDbCommand

Using database Parameter

 
#include "stdafx.h"
using namespace System;
using namespace System::Data;
using namespace System::Data::OleDb;

void main()
{
    OleDbConnection^ myConnection = nullptr;
    myConnection = gcnew OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Music.mdb");
    myConnection->Open();
    OleDbCommand^ MyCommand = gcnew OleDbCommand("SELECT COUNT(*) FROM Music WHERE Genre=@Genre",myConnection);
    OleDbParameter^ parameter = gcnew OleDbParameter("@Genre",OleDbType::Char);
    parameter->Direction = ParameterDirection::Input;
    parameter->Value = "Techno/Classical";
    MyCommand->Parameters->Add(parameter);
    Object^ Count = MyCommand->ExecuteScalar();
    Console::WriteLine("Count = {0}", Count);
    myConnection->Close();
}

   
  

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