ScalarTest.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;


namespace DatabaseProject
{
  public class ScalarTest
  {
    public void Test() {
      string connectionString = "server=localhost;DataBase=CourseDatabase;uid=sa;pwd=godoro";
      SqlConnection connection = new SqlConnection(connectionString);
      connection.Open();

      String sql = "select count(*) from Student";
      SqlCommand command = new SqlCommand(sql, connection);
      int rowCount = (int)command.ExecuteScalar();
      Console.WriteLine("Row Count : "+rowCount);
      connection.Close();
 
    }
  }
}