private void Button1Click(object sender, EventArgs e)
{
  Cursor = Cursors.WaitCursor;
  try
  {
    textBox1.Clear();
    using (var connection = new OdbcConnection("DRIVER={InterSystems ODBC35};SERVER=localhost;PORT=1972;DATABASE=SAMPLES;UID=_system;PWD=SYS;Unicode SQLTypes=1"))
    {
      using (var command = new OdbcCommand("SELECT * FROM Sample.Person", connection))
      {
        connection.Open();
        using (var result = command.ExecuteReader())
        {
          while (result.Read())
          {
            textBox1.Text += result["SSN"] + Environment.NewLine;
          }
        }
      }
    }
  }
  finally
  {
    Cursor = Cursors.Default;
  }
}

private void Button2Click(object sender, EventArgs e)
{
  Cursor = Cursors.WaitCursor;
  try
  {
    textBox1.Clear();
    using (var connection = new CacheConnection("Server=localhost;Port=1972;Namespace=samples;User ID=_system;Password=SYS;Pooling=false"))
    {
      using (var command = new CacheCommand("SELECT * FROM Sample.Person", connection))
      {
        connection.Open();
        using (var result = command.ExecuteReader())
        {
          while (result.Read())
          {
            textBox1.Text += result["SSN"] + Environment.NewLine;
          }
        }
      }
    }
  }
  finally
  {
    Cursor = Cursors.Default;
  }
}