Datagridview update help

Hi everyone, I'm working on my first winforms EDM project and I'm trying to populate a Datagridview with a list of Presenters that can be updated by a user. The cols in my grid are Name and Email address(DataGridViewLinkColumn). So far I have been able to display the grid correctly but when I try to add a new row my changes are not being saved back to the DB even though I get a msgbox to say they have. Here's how I'm populating my DGV:

C# Code:

private void frmPresenters_Load(object sender, EventArgs e)
{
  dal = new DataAccessLayer();
 
  try
  {
    //Get the List of Contacts from the DAL and bind to the DataGrid
    source = new BindingSource();
    source.DataSource = dal.GetPresentersList();
 
   this.dgvPresenters.DataSource = source;
   dgvPresenters.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;
   dgvPresenters.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.AllCells;
  }
  catch (Exception ex)
  {
     MessageBox.Show(string.Format("Exception occurred: {0}", ex.Message));
  }
}

I'm unable to edit the Email address field as well (i think this may be a seperate thread)

all updates are made by clicking a button:

C# Code:

private void btnSave_Click(object sender, EventArgs e)
{
   try
   {
      // Save object changes to the database, display a message, and refresh the form.
      this.source.EndEdit();
      //dal.entities.SaveChanges();
      MessageBox.Show("Changes saved to the database.");
      this.Refresh();
   }
   catch (Exception ex)
   {
      MessageBox.Show(ex.Message);
   }
}

Can anyone help me please?

You see the message because you're displaying the message. Your changes don't get saved because you're not saving them. You've commented out the SaveChanges call, which is presumably what saves the changes. If you are saying, without actually saying, that it still doesn't save even when that line is not commented out then we can't really help because we don't know anything about your DataAccessLayer class. How you save data depends what technology you're using inside that class. If, for instance, you're using ADO.NET then you need to call Update on the appropriate DataAdapter or TableAdapter and pass the DataTable containing the changes.