Function overview: Display message information at the front desk. Guests post messages. Administrator logs in. Administrator manages the message board -----Delete messages, reply to messages. Display modified prompt information. Detailed design of function. Display message information at the front desk. After querying the database message information table, after DataLists formats and outputs all message information, and then adds the data source to DataLists. The output information is paginated to display. Visitors post messages. Visitors can publish their own message information after browsing message information. Administrators need to log in to delete message information and reply. Management of the administrator's message board - deleting messages and replying to messages. Only those who have administrator permissions can reply to and delete messages. The modified prompt information will be displayed. After the visitor successfully posts a message, the prompt information will be displayed whether the message is published successfully or not. Return to the home page to view the message. After the administrator deletes and replies to the message, a message will be displayed indicating whether the operation is successful or not before returning to the home page to view the message.
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