Можно ли одновременно использовать более одной sqldependency?

string connection="My connection String";
string obj1;
public Form1()
{
   InitializeComponent();
   
}
private void Form1_Load(object sender, EventArgs e)
{
   Method1();
   Method2();
}
private bool DoesUserHavePermission()
 {
   try
   {
      SqlClientPermission clientPermission = new 
      SqlClientPermission(PermissionState.Unrestricted);

      clientPermission.Demand();

      return true;
   }
   catch
   {
      return false;
   }
}
private void Method1()
{
try
 {
    if (!DoesUserHavePermission())
       return;
SqlDependency.Stop(connection);
SqlDependency.Start(connection);

using (SqlConnection cn = new SqlConnection(connection))
   {
     if(cn.State==ConnectionState.Close)
       cn.Open();
     using (SqlCommand cmd = cn.CreateCommand())
       {
         cmd.Connection=cn;
         cmd.CommandType = CommandType.Text;
         cmd.CommandText = "my command text for table1";
         SqlDependency dep = new SqlDependency(cmd);
         dep.OnChange += new OnChangeEventHandler(dep_onchange1);
         obj1=cmd.ExecuteScalar().ToString();
       }
    }
}
  catch (Exception ex)
  {
    MessageBox.Show(ex.Message);
  }
}
void dep_onchange1(object sender, SqlNotificationEventArgs e)
{
   //some events
   Method1();
   SqlDependency dep = sender as SqlDependency;
   dep.OnChange -= new OnChangeEventHandler(dep_onchange1);
}
private void Method2()
{
try
 {
    if (!DoesUserHavePermission())
       return;
SqlDependency.Stop(connection);
SqlDependency.Start(connection);

using (SqlConnection cn = new SqlConnection(connection))
   {
     if(cn.State==ConnectionState.Close)
       cn.Open();
     using (SqlCommand cmd = cn.CreateCommand())
       {
         cmd.Connection=cn;
         cmd.CommandType = CommandType.Text;
         cmd.CommandText = "my command text for table2";
         SqlDependency dep = new SqlDependency(cmd);
         dep.OnChange += new OnChangeEventHandler(dep_onchange2);
         obj2=cmd.ExecuteScalar().ToString();
       }
    }
}
  catch (Exception ex)
  {
    MessageBox.Show(ex.Message);
  }
}
void dep_onchange2(object sender, SqlNotificationEventArgs e)
{
   //some events
   Method2();
   SqlDependency dep = sender as SqlDependency;
   dep.OnChange -= new OnChangeEventHandler(dep_onchange2);
}
private void Form1_Closing(object sender, FormClosingEventArgs e)
 {
   SqlDependency.Stop(connection);
 }

I want to use SqlDependency for two or three different tables at the same time.SqlDependency working for one table.No problem.But not working for two or three different tables.What can I do about this?So SqlDependency working for  [table1] but it is not working for [table1] and [table2].İt is working only one.