private void تعديل__حذف_منتج_Load(object sender, EventArgs e)
        {
            var newProduct = new CategoriesHelpers().Get_categories();

            comboBox1.DataSource    = newProduct;
            comboBox1.DisplayMember = "Name";
        }
        private void button3_Click(object sender, EventArgs e)
        {
            var cat = new CategoriesHelpers().SearchCategories(textBox1.Text);

            dataGridView1.DataSource = cat;
        }