private void btnSave_Click(object sender, EventArgs e) { var model = new ManufacturerModel(); model.MANUFACTURER_NAME = txtMANUFACTURER_NAME.Text; int.TryParse(txtID.Text, out int id); model.ID = id; if (model.Validate() == false) { MessageBox.Show(this, "All values are required", "Save Action failed !", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } model.Save(); txtID.Text = model.ID.ToString(); txtMANUFACTURER_NAME.Focus(); txtMANUFACTURER_NAME.Select(); }