How to track changes in MS SQL 2008 DB in C# through Service Broker?

Question

SQL

Greetings. I can't figure out how to track changes in the database.
Available:

• Application written in C#
  
• SQL Server, with a 3-table database
  

I do the following in the program:

public Main_Form()
{
   InitializeComponent();
   
   SqlDependency.Stop(connectionString);
   SqlDependency.Start(connectionString);
   ScoutingSQL();

   DataGridView_Load();
}

//  создаем dependency и подписываем его на событие
// которое должно вызвать Service Broker 
private void ScoutingSQL()
{
   SqlConnection connection = new SqlConnection(connectionString);
   connection.Open();
   SqlCommand command = new SqlCommand("SELECT sentDate, verificationDate, verifiedTo", connection);
   SqlDependecy dependency = new SqlDependency(command);
   dependency.OnChange += new OnChangeEventHandler(OnDependencyChange);
}

// метод, вызванный событием
void OnDependencyChange(object sender, SqlNotificationEventArgs e)
{
   DataGridView_Load();
}

// Загружаем данные из sql бд в наш грид
public void DataGridView_Load()
{
   while(dataGridView1.Rows.Count > 0)
      for (int i = 0; i < dataGridView1.Rows[i]);
      {
         dataGridView1.Rows.Remove(dataGridView1.Rows[i]);
      }
   string tableName = "[staff_106].[dbo].[staff]"
   string querry = ("SELECT * FROM" + tableName + "");
   SqlConnection connection = new SqlConnection(connectionString);
   SqlDataAdapter dataAdapter = new SqlDataAdapter(querry, connection);
   // и тд... просто делаем  Fill из dataSet, заполняя грид.
}

I wrote a piece for SqlDependency according to this example
In the database itself I did But ... for some reason, by RMB->Properties->Change Tracking in the Change Tracking field hung False. Well, manually switched to True. I start the application, change something in the database via SQL SMS and... nothing happens. I checked with a breakpoint, the method is not even called by the event. I had a number of questions in the course of studying the materiel. 1) Queue. How to find out the name of my queue by default. How to configure it? Because, as I understand it, I do not have a completely complete code for SqlDependency, because required but queueName I don't know. 2) I only need to know if there have been changes or not. Which ones specifically, it doesn’t matter to me, and it’s not clear why this piece hangs in the example:ALTER DATABASE [Database_name] SET ENABLE_BROKER;
SqlDependency.Start(connectionString, queueName);

// Execute the command.  
        using (SqlDataReader reader = command.ExecuteReader())  
        {  
            // Process the DataReader.  
        }

More precisely, it’s clear that, in theory, according to the correct idea, I should pull up those same changes from the Queue and work with them further, for example, fill a cell in the grid with them, and not refill the entire grid (but I have a small one and I don’t particularly I lose from Fill), but, probably, this is something you need, since it doesn’t work for me?
3) How can I check in SQL SMS if Service Broker is working at all? I read about messages in the database that Service Broker supposedly should respond to, but I didn’t deduct anything specific (what it should answer, in what form, where, how to look at this packet in this case).
I understand that the questions are extremely stupid, and I hope for your patience.
Thanks for any help and clarification on my issue.