Data.cpp

#using <mscorlib.dll>
using namespace System;
using namespace System::Collections;

#using "System.dll"
#using "System.Data.dll"
#using "System.Transactions.dll"
#using "System.EnterpriseServices.dll"
#using "System.Xml.dll"

using namespace System::ComponentModel;
using namespace System::Data;
using namespace System::Data::SqlClient;

void main()
{
	// Query user for user id and password
	
	Console::Write("Enter User ID for Northwind Database :");
	String ^userId = Console::ReadLine();
	Console::Write("Enter password : ");
	String ^password = Console::ReadLine();	
	
	// Connect to the SQL Database and issue a SELECT command all in one statement
	String ^query = "SELECT * FROM Categories";
	// build connect string with the userid and password
	String ^connectString = String::Format("Data Source=localhost;Database=Northwind;UID={0};Password={1};", userId, password);

	//You can use this format if you are connecting with a known user name and password,
	// however it is not recommended to store these in the source for security reasons
	//String ^ connectString =  "Data Source=localhost;Database=Northwind;UID=sa;Password=";

	SqlConnection^ sqlconn = gcnew SqlConnection(connectString);
	sqlconn->Open();
	SqlCommand ^sqlCommand = gcnew SqlCommand(query, sqlconn);

	// Create a SqlDataReader to enumerate the result of executing the command against the database.
	SqlDataReader ^dataReader = sqlCommand->ExecuteReader();

	// Find number of columns in result
	int numCols = dataReader->FieldCount;

	// Display number of columns returned from query
	Console::Write("No. of columns:");
	Console::WriteLine(numCols);

	// Display the data, separated by tabs
	while(dataReader->Read())
	{
		
		for (int c = 0; c < numCols-1; c++)
		{
			Console::Write(dataReader[c]);
			Console::Write("\t");
		}
		
		Console::WriteLine("");
	}
}