private void CatEdit_Click(object sender, RoutedEventArgs e)
        {
            dataAccess data = new dataAccess();
            categories cat  = new categories();

            if (CategoryName.Text == null || CategoryName.Text == "")
            {
                MessageBox.Show("Enter the category name");
            }
            else if (CategoryDescription.Text == null || CategoryDescription.Text == "")
            {
                MessageBox.Show("Enter the category description");
            }
            else
            {
                cat.CategoryID   = int.Parse(CategoryNumber.Text);
                cat.CategoryName = CategoryName.Text;
                cat.Description  = CategoryDescription.Text;
                data.EditCategory(cat);
                MessageBox.Show("Category Edited " + cat.CategoryName);
            }
        }