C sharp - Mostrar el progreso de un proceso desde una biblioteca de clases

public partial class Form1 : Form

{

    // otro codigo...

    private void btnGuardarLista_Click(object sender, EventArgs e)

    {

        if (productos.Count > 0)

        {

            try

            {

                btnGuardarLista.Enabled = false;

                progressBar1.Visible = true;

                lblProgreso.Show();

                backgroundWorker1.RunWorkerAsync();

                //objetoCN.InsertarListaProd(productos);

                //MostrarProdctos();

                //limpiarForm();

            }

            catch (Exception ex)

            {

                MessageBox.Show("Error al ejecutar 'InsertarProductos': " + ex);

            }

        }

    }

    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)

    {

        //objetoCN.InsertarListaProd(productos);

        int i = 0;

        foreach (Producto item in productos)

        {

            if (i % 2 == 0)

            {

                System.Threading.Thread.Sleep(500); // 1 seg por cada 2 inserts

            }

            objetoCN.InsertarPRod(

                item.Nombre,

                item.Descripcion,

                item.Marca,

                item.Precio,

                item.Stock

                );

            //int progreso = (i + 1) * 100 / productos.Count;

            int progreso = (i + 1) * 100 / productos.Count;

            backgroundWorker1.ReportProgress(progreso);

            i += 1;

        }

    }

    private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)

    {

        progressBar1.Value = e.ProgressPercentage;

    }

    private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)

    {

        btnGuardarLista.Enabled = true;

        progressBar1.Visible = false;

        lblProgreso.Hide();

        MessageBox.Show($"Se agregaron {productos.Count} productos!");

        productos.Clear();

        MostrarProdctos();

    }

}

public class CapaDatos

{

    ProgressBar progressBar { get; set; }

    BackgroundWorker backGroundWorker { get; set; }

    public void BackgroundWorker1_DoWork(object sender, DoWorkEventArgs e)

    {

        // ...

    }

    public void BackgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)

    {

        // ...

    }

    public void BackgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)

    {

        // ...

    }

    // ...

}

// Form.cs

public Form1()

{

    InitializeComponent();

    // Seteo los metodos del BackGroundWorker de mi Form

    backgroundWorker1.DoWork += capaNegocio.getCapaDatos().BackgroundWorker1_DoWork;

    backgroundWorker1.ProgressChanged += capaNegocio.getCapaDatos().BackgroundWorker1_ProgressChanged;

    backgroundWorker1.RunWorkerCompleted += capaNegocio.getCapaDatos().BackgroundWorker1_RunWorkerCompleted;

    // Paso las referencias del BackGroundWorker y el ProgressBar a la Capa de Datos

    capaNegocio.getCapaDatos().progressBar = progressBar1;

    capaNegocio.getCapaDatos().backGroundWorker = backgroundWorker1;

}