<label for="<?php echo $this->get_field_id( 'link' ); ?>"><?php _e( 'دسته بندی' ); ?></label>
            <select id="<?php echo $this->get_field_id('link'); ?>" name="<?php echo $this->get_field_name('link'); ?>" class="widefat" style="width:100%;">
            <?php foreach(get_terms('category','parent=0&hide_empty=false') as $term) { ?>
            <option <?php selected( $instance['link'], $term->term_id ); ?> value="<?php echo $term->term_id; ?>"><?php echo $term->name; ?></option>
            <?php } ?>
        </select>