C# 3.0 2008 Win Form Combo Box Runtime Adding

[Mr Gray]

HI guys,

I am developing a winform and need to update the contents of a combo box at runtime. I currently click a button that brings up a new dialog and click save. I then return to the parent form and at that point i rebind the combo box to the collection that retrieves my new saved item from the DB. Problem is that i can see the item when I debug and step through but the combo box has not been refreshed to show the new item.

        public void BindSuppliers()
        {
            string strConnection = string.Empty;

            try
            {
                SupplierCollection oCollection = Data.GetSuppliers(strConnection);

                ddlSuppliers.Items.Clear();

                ddlSuppliers.DataSource  = oCollection;

                ddlSuppliers.DisplayMember = "SupplierName";
                ddlSuppliers.ValueMember = "SupplierId";
            }
            catch
            {
                // log 
            }
        }

        private void btnSave_Click(object sender, EventArgs e)
        {
            Supplier s = new Supplier();

            try
            {
                s.SupplierName = txtSupplier.Text;
                Data.AddSupplier(s);
                CloseForm();
            }
            catch (Exception oEx)
            {
                // log
            }
        }

        private void CloseForm()
        {
            Form1 f = new Form1();

            try
            {
                f.BringToFront();
                f.BindSuppliers();
                this.Close();
            }
            catch (Exception oEx)
            {
                // log
            }
        }