private void btnDeleteCategory_Click(object sender, EventArgs e)
{
string idCateTxt = txtCategoryID.Text.Trim();
string message = busCate.deleteCate(idCateTxt);
MessageBox.Show(message);
if (message.Equals("Xóa danh mục thành công"))
{
loadListCate();
bindingsCate();
LoadCategory();
loadListFood();
bindingsFood();
}
}