Why doesn’t this method work?

Question

I am continuing with my SMO learning and again I am blocked.

 

Something is missing in this method that I am not able to see.

 

The view I have previously created it without problems, but when I try creating the delete method sends me the following message:

 

Reference or object Not instantiated to an object.

 

I hope a charitable soul lends me a hand.

private void BtnBorrarVista_Click(object sender, EventArgs e)
{
      try
     {
               if (MessageBox.Show("Está intentando borrar la Vista " + textBoxBorrarVista.Text + " ¿Está seguro de que quiere eliminarla?",                "¡Atención!", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
               {
                        m_Server = new Server(cmbServerName.Text);
                        Database myNewDatabase = m_Server.Databases[cmbDbName.Text];
                        Microsoft.SqlServer.Management.Smo.View view = myNewDatabase.Views[textBoxBorrarVista.Text];
                        view.Drop();
                        MessageBox.Show("La Vista " + textBoxBorrarVista.Text + " se borró con éxito");
               }
               else
               {
                        MessageBox.Show("Operación abortada. La Vista " + textBoxBorrarVista.Text + " no se ha borrado");
               }
      }
      catch (Exception ex)
      {
            MessageBox.Show(ex.Message.ToString());
      }
}