View the category list
1. **Table view** - All information is displayed in table form
2. **Column sort** - Click the column header to sort
3. **Page browsing** - Use the bottom paging control
4. **Adjust display** - Select the number of records to display per page
Filter and search
1. **Parent ID filter** - Enter the parent ID in the filter box
2. **Name search** - Enter the category name in the search box
3. **Real-time filter** - Display results immediately after input
4. **Clear filter** - Click the clear button to restore all display