//btn add supliers COMPLITED private async void btnAddSup_Click(object sender, EventArgs e) { if (!txtSupName.Text.Equals("")) { Suppliers supplier = new Suppliers(); supplier.CompanyName = txtSupName.Text; supplier.Phone = txtSupPhone.Text; await ControlerMethods.SetSuplierAsync(supplier); txtSupPhone.Text = ""; txtSupName.Text = ""; } dataSupliers.DataSource = await ControlerMethods.GetSupliersAsync(); }