Summary of project experience using C# to develop hotel management system

With the needs of modern society, hotel management systems have become one of the indispensable services in the market. Using computer technology to develop hotel management systems can greatly improve hotel management efficiency, thereby improving service quality, meeting customer needs, and increasing economic returns. This article will summarize the project experience of developing a hotel management system in C# from various aspects such as actual project needs, technology selection, code implementation, and project summary.

1. Actual project requirements

(1) Customer management: including customer information, customer reservations, check-in and check-out management functions.

(2) Room management: includes functions such as setting room classification, number, price, status and other attributes, as well as viewing room reservation status, etc.

(3) Product management: including the setting of product number, name, unit price, description and other attributes, as well as functions such as product warehousing and sales.

(4) Employee management: including functions such as employee information management and employee salary settlement.

(5) Financial management: including functions such as bill settlement, income, expenditure and other financial statements generation and viewing.

2. Technology selection

In view of the complexity of project requirements and maintainability considerations, C#, a high-level programming language, was chosen for development. At the same time, in order to improve user experience and scalability, we chose the WPF interface framework for development, which makes the interface beautiful, rich in operations, user-friendly and interactive, and also reduces the later maintenance cost of the project.

3. Code Implementation

(1) Implementation of customer management module

Customer information management is an indispensable function in the hotel management system. We first implemented the customer management module Operations such as adding, deleting, modifying, and checking information. Among them, the SQLite database is used to store customer information. The code is implemented as follows:

//新建客户信息
public void Add(Customer customer)
{
    string sql = "insert into tb_customer(cname,sex,phone,idcard)"
                    + "values(@name,@sex,@phone,@idcard)";
    SQLiteParameter[] parameters =
    {
        new SQLiteParameter("@name",customer.CName),
        new SQLiteParameter("@sex",customer.CSex),
        new SQLiteParameter("@phone",customer.CPhone),
        new SQLiteParameter("@idcard",customer.CIDCard)
    };
    int result = SqliteHelper.ExecuteNonQuery(sql, parameters);
}

//更新客户信息
public void Update(Customer customer)
{
    string sql = "Update tb_customer set cname=@name,sex=@sex,"
                    + "phone=@phone,idcard=@idcard where id=@id";
    SQLiteParameter[] parameters =
    {
        new SQLiteParameter("@name",customer.CName),
        new SQLiteParameter("@sex",customer.CSex),
        new SQLiteParameter("@phone",customer.CPhone),
        new SQLiteParameter("@idcard",customer.CIDCard),
        new SQLiteParameter("@id",customer.ID)
    };
    int result = SqliteHelper.ExecuteNonQuery(sql, parameters);
}

//查询客户信息
public List<Customer> GetAllCustomers()
{
    List<Customer> results = new List<Customer>();
    string sql = "select * from tb_customer";
    DataTable table = SqliteHelper.ExecuteQuery(sql, null);
    if (table.Rows.Count > 0)
    {
        foreach (DataRow row in table.Rows)
        {
            Customer customer = new Customer();
            customer.ID = int.Parse(row["id"].ToString());
            customer.CName = row["cname"].ToString();
            customer.CSex = row["sex"].ToString();
            customer.CPhone = row["phone"].ToString();
            customer.CIDCard = row["idcard"].ToString();
            results.Add(customer);
        }
    }
    return results;
}

(2) Implementing the room management module

Room management is a core module in the hotel management system. We have implemented room classification, numbering, price, status and other attributes Settings and checking room reservation status and other operations. Among them, the storage of room information also uses the SQLite database. The code is implemented as follows:

//新建房间信息
public void Add(Room room)
{
    string sql = "insert into tb_room(rname,type,price,isclean,remark)"
                    + "values(@name,@type,@price,@isclean,@remark)";
    SQLiteParameter[] parameters =
    {
        new SQLiteParameter("@name",room.RName),
        new SQLiteParameter("@type",room.RType),
        new SQLiteParameter("@price",room.RPrice),
        new SQLiteParameter("@isclean",room.RIsClean),
        new SQLiteParameter("@remark",room.RRemark)
    };
    int result = SqliteHelper.ExecuteNonQuery(sql, parameters);
}

//更新房间信息
public void Update(Room room)
{
    string sql = "Update tb_customer set rname=@name,type=@type,"
                    + "price=@price where id=@id";
    SQLiteParameter[] parameters =
    {
        new SQLiteParameter("@name",room.RName),
        new SQLiteParameter("@type",room.RType),
        new SQLiteParameter("@price",room.RPrice),
        new SQLiteParameter("@id",room.ID)
    };
    int result = SqliteHelper.ExecuteNonQuery(sql, parameters);
}

//查询房间信息
public List<Room> GetAllRooms()
{
    List<Room> results = new List<Room>();
    string sql = "select * from tb_room";
    DataTable table = SqliteHelper.ExecuteQuery(sql, null);
    if (table.Rows.Count > 0)
    {
        foreach (DataRow row in table.Rows)
        {
            Room room = new Room();
            room.ID = int.Parse(row["id"].ToString());
            room.RName = row["rname"].ToString();
            room.RType = row["type"].ToString();
            room.RPrice = double.Parse(row["price"].ToString());
            room.RIsClean = bool.Parse(row["isclean"].ToString());
            room.RRemark = row["remark"].ToString();
            results.Add(room);
        }
    }
    return results;
}

(3) Implement the product management module

The management of product information is an important function in the hotel management system. We have implemented product number, name, unit price, description, etc. Attribute settings and operations such as product warehousing and sales. Among them, the storage of product information also uses the SQLite database. The code is implemented as follows:

//新建商品信息
public void Add(Goods goods)
{
    string sql = "insert into tb_goods(gname,price,counts)"
                    + "values(@name,@price,@counts)";
    SQLiteParameter[] parameters =
    {
        new SQLiteParameter("@name",goods.GName),
        new SQLiteParameter("@price",goods.GPrice),
        new SQLiteParameter("@counts",goods.GCounts)
    };
    int result = SqliteHelper.ExecuteNonQuery(sql, parameters);
}

//更新商品信息
public void Update(Goods goods)
{
    string sql = "Update tb_goods set gname=@name,price=@price,"
                    + "counts=@counts where id=@id";
    SQLiteParameter[] parameters =
    {
        new SQLiteParameter("@name",goods.GName),
        new SQLiteParameter("@price",goods.GPrice),
        new SQLiteParameter("@counts",goods.GCounts),
        new SQLiteParameter("@id",goods.ID)
    };
    int result = SqliteHelper.ExecuteNonQuery(sql, parameters);
}

//查询商品信息
public List<Goods> GetAllGoods()
{
    List<Goods> results = new List<Goods>();
    string sql = "select * from tb_goods";
    DataTable table = SqliteHelper.ExecuteQuery(sql, null);
    if (table.Rows.Count > 0)
    {
        foreach (DataRow row in table.Rows)
        {
            Goods goods = new Goods();
            goods.ID = int.Parse(row["id"].ToString());
            goods.GName = row["gname"].ToString();
            goods.GPrice = double.Parse(row["price"].ToString());
            goods.GCounts = int.Parse(row["counts"].ToString());
            results.Add(goods);
        }
    }
    return results;
}

(4) Implementing the employee management module

The management of employee information is a necessary function in the hotel management system. We have implemented the viewing, modification and salary settlement of employee information. Wait for operations. Among them, the storage of employee information also uses the SQLite database. The code is implemented as follows:

//员工结算工资
public void CalculateSalary(Employee employee)
{
    string sql = "insert into tb_salary(name,position,salary,date)"
                    + "values(@name,@position,@salary,@date)";
    SQLiteParameter[] parameters =
    {
        new SQLiteParameter("@name",employee.EName),
        new SQLiteParameter("@position",employee.EPosition),
        new SQLiteParameter("@salary",employee.CalculateSalary()),
        new SQLiteParameter("@date",DateTime.Now.ToShortDateString())
    };
    int result = SqliteHelper.ExecuteNonQuery(sql, parameters);
}

//更新员工信息
public void Update(Employee employee)
{
    string sql = "Update tb_employee set ename=@name,sex=@sex,"
                    + "position=@position,salary=@salary where id=@id";
    SQLiteParameter[] parameters =
    {
        new SQLiteParameter("@name",employee.EName),
        new SQLiteParameter("@sex",employee.ESex),
        new SQLiteParameter("@position",employee.EPosition),
        new SQLiteParameter("@salary",employee.ESalary),
        new SQLiteParameter("@id",employee.ID)
    };
    int result = SqliteHelper.ExecuteNonQuery(sql, parameters);
}

//查询员工信息
public List<Employee> GetAllEmployees()
{
    List<Employee> results = new List<Employee>();
    string sql = "select * from tb_employee";
    DataTable table = SqliteHelper.ExecuteQuery(sql, null);
    if (table.Rows.Count > 0)
    {
        foreach (DataRow row in table.Rows)
        {
            Employee employee = new Employee();
            employee.ID = int.Parse(row["id"].ToString());
            employee.EName = row["ename"].ToString();
            employee.ESex = row["sex"].ToString();
            employee.EPosition = row["position"].ToString();
            employee.ESalary = double.Parse(row["salary"].ToString());
            results.Add(employee);
        }
    }
    return results;
}

(5) Implementing the financial management module

The financial management module is an important function in the hotel management system. We have implemented financial statements such as bill settlement, income, and expenditure. Generate and view operations. Among them, the storage of financial information also uses the SQLite database. The code is implemented as follows:

//生成财务报表
public List<Finance> GetFinance(string start, string end)
{
    List<Finance> results = new List<Finance>();
    string sql = "select * from tb_finance where date between @start and @end";
    SQLiteParameter[] parameters =
    {
        new SQLiteParameter("@start",start),
        new SQLiteParameter("@end",end)
    };
    DataTable table = SqliteHelper.ExecuteQuery(sql, parameters);
    if (table.Rows.Count > 0)
    {
        foreach (DataRow row in table.Rows)
        {
            Finance finance = new Finance();
            finance.ID = int.Parse(row["id"].ToString());
            finance.FType = row["type"].ToString();
            finance.FMoney = double.Parse(row["money"].ToString());
            finance.FDate = row["date"].ToString();
            results.Add(finance);
        }
    }
    return results;
}

4. Project Summary

Through the experience of developing this project, we draw the following summary:

(1) During the development process, we should start from Starting from actual needs and focusing on actual business needs, we accurately grasp the division of module functions to ensure the completeness and rationality of the functions.

(2) Technology selection must consider not only the actual needs of the project, but also the maintainability and scalability in the later stages of the project, balance the two, and find the optimal solution.

(3) This project uses a SQLite database to store information, which is simple and easy to expand. It is a very suitable database selection for small and medium-sized projects.

(4) During the project development process, code encapsulation should be used as much as possible to improve the reusability and maintainability of the code. This can improve the readability and maintainability of the code, thereby reducing the cost of the project later. maintenance costs.

(5) After the project development is completed, conduct a project review and summary, summarize the deficiencies and imperfections in the project process, and provide experience summaries for future project development.

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