The main function of the maintenance project module is to inquire about the maintenance project, project ownership, unit price and the length of time required to perform maintenance. When the shop maintenance project is updated, the project can be updated through the "Add" button. Similarly, if some items cannot be performed due to conditions, they can be deleted by using the "Delete" key. Business Management Module The Business Management Module is the most important part of 4S store auto parts management, including parts classification and inventory.

The accessory classification module is based on the category, model, and storage location of the specific planning accessories. The detailed classification of specific types of different brands and models of vehicle accessories enables the staff to easily find, add, and delete the determined accessory models in vehicle maintenance. The stock situation module records the actual situation of the spare parts inventory, and makes detailed registration of the parts' storage and delivery, making the spare parts inventory more transparent and clear. Common function module printing function prints query data as needed.

System Settings Module The System Settings module contains three parts: Password Modification, About System, and Exit System. Password modification function: The password of the registered user name can be modified. About system functions: The version information of the system, the related functions, and the programmer-related information are introduced. Exit system function: For the user to exit the system, this function also has a query dialog function to confirm whether to exit the system. The system program to achieve the login interface login page should have a simple, beautiful, generous, prominent features, the interface should have a user name, password input, and passwords with "" to hide. In accordance with the above requirements, design and programming are required. The interface is as shown.

Login interface Login interface Form1 window is mainly composed of 2 Buttons, 2 Edits, 1 Panel (which contains a Label headline: "4S shop auto parts data management system"), 2 Label respectively represents the user name and password, 1 Image diagrams embellish the components of the interface. The edit box Edit component receives and displays user input text. In the "Edit" behind the "password", to enter the password, the password needs to be kept confidential. You can use the PasswordChar property to modify the hidden password, and change its value to "". When you log in, the entered password will use the "" character. The display plays a role of confidentiality and security.

The role of the Button component is to open the login interface, enter the user name and password, click the "confirm" button, the system will analyze the user name and password to determine both are correct, you can enter the lower menu. When there is an error, the dialog box "Username or password is wrong, please check and enter" is displayed. The user name and password in the article are: Zhao Nan and 123. After inputting these two information, the system will display the dialog box “Welcome to the 4S shop auto parts data management system” and will automatically pop open the main interface.

The design and implementation of the main interface of the system is the main interface of the auto parts data management system. When dividing the specific function module in the system main interface programming, four Panel components are established to distinguish each function, and Label and Button components are set in each Panel component area to set each key connection. At the same time, the system's main interface also has the current date clock function. In the interface, each Button component will be linked to a new interface, which allows the operator to quickly and easily enter the new interface. For example, the link of the fourth new interface code is as follows: procedureTForm2.Button1Click(Sender:TObject);beginform4.show;//Enter the fourth page.

Conclusion As a typical information management system, the 4S shop auto parts data management system is continuously developed and explored by many programmers to make it more complete and more convenient to use. Moreover, the system is very demanding, the requirements for consistency and perfection of data are very strong, and the security of the database is also very demanding. In the face of these requirements, the Delphi language programming platform with superior performance is used in this article. The system can be designed and programmed in a short time, and it is continuously revised, improved, and improved. The 4S shop auto parts data management system developed covers the basic services currently required, mainly including daily operations such as information query, business management, printing, and system setup. At the same time, the operation module has basic functions such as query, add, delete and add. When designing the program interface, full consideration is given to its simplicity, aesthetics, and ease of operation.

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