Catching exceptions from list of objects bound to DataGridView

Question

I am working on a project where the concerns are divided into 3 layers (Presentation, Business Logic and Data Access). Using exception bubbling, I am able to pass exceptions from one layer to another until I can finally catch it and display a message from the Presentation Layer. However, I have no clue how to do this whenever a cell is updated in the datagridview.

//Business entity:
class Clients : Person
{
    public override string FirstName
    {
        set
        {
            try
            {
                fc.lettersOnlyUpcaseFirstChar(ref value, false);
                dal.update(this.GetType().Name, "FirstName", value, "ClientID", clientID.ToString());
            }
            catch (Exception)
            {
                throw;
            }
        } 
    }
}

//Format checking helper class:
class formatChecks
{
    public void lettersOnlyUpcaseFirstChar(ref string input, bool nullable)
    {
        input = Regex.Replace(input, @"\s+", "");
        if (input == "" && !nullable)
            throw new ArgumentOutOfRangeException("Value can not be null.");
        if (!input.All(Char.IsLetter))
            throw new FormatException("Value may only contain letters (a-z, A-Z).");
        char[] letters = input.ToLower().ToCharArray();
        letters[0] = char.ToUpper(letters[0]);
        string outs = new string(letters);
    }
}

//Business layer helper class:
class BLHandler
{
    // initialize list of Clients by using a Data Access class...
    ArrClients = dal.selectAll("Clients", typeof(Clients).AssemblyQualifiedName).Cast<Clients>().ToList();
}

//The list bound to a datagridview in the presentation layer:
public frmMain()
{
    dgvCustomers.DataSource = BHandler.ArrClients;
}

I know I could do the format checking in the presentation layer, but I would prefer to do it this way. Is there any way I can make this work?