C#版机房收费系统之注册用户

思路：

1.查询注册用户ID是否已存在

2.向数据库插入用户信息

代码：

 

U层：

 private void btnOK_Click(object sender, EventArgs e)
        {
            Entity.UserInfo user = new Entity.UserInfo();
            user.UserID = txtUserID.Text.Trim();
            user.PassWord = txtPassWord.Text;   //user.PassWord = txtPassWord.Text(); //Text后面没有()，
            user.UserName = txtUserName.Text.Trim();
            user.UserLevel = comboUserLevel.Text.Trim();

            //判断两次输入密码是否一致
            if (txtPassWord.Text != txtPassWord2.Text)
            {
                MessageBox.Show("两次输入密码不一致，请重新输入", "温馨提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                txtPassWord.Text = "";
                txtPassWord2.Text = "";
            }
            else
            {
                //查询注册ID是否重复
                Boolean flag = false;
                Facade.AddUserFacade faca = new Facade.AddUserFacade();
                flag = faca.InquUser(user);
                if (flag == false)
                {
                    MessageBox.Show("该账号ID已经存在，请重新输入注册信息！");
                    txtUserID.Text = "";
                }
                else
                {
                    //无重复ID，可添加
                    flag = faca.AddUser(user);
                    MessageBox.Show("用户ID：" + txtUserID.Text + "   添加成功");
                } 
            }

   

Facade层：

public class AddUserFacade
    {
        //添加用户
        public Boolean AddUser(Entity.UserInfo user)
        {
            bool flag;
            BLL.AddUserBLL adduserBLL = new BLL.AddUserBLL();
            flag = adduserBLL.AddUser(user);
            return flag;
        
        }
        //查询用户
        public Boolean InquUser(Entity.UserInfo user)
        {
            bool flag;
            BLL.AddUserBLL adduserBLL = new BLL.AddUserBLL();
            flag = adduserBLL.InquUser(user);
            return flag;
        }
    }

BLL层：

public class AddUserBLL
    {
        //添加用户
        public bool AddUser(Entity.UserInfo UserInfo)
        {
            Factory.AddUserFactory fact = new Factory.AddUserFactory();
            IDAL.AddUserIDAL idal = fact.AddUser();
            DataTable table = idal.addUser(UserInfo);
            bool flag;
           
            if (table.Rows.Count != 0)
            {
                flag = false;
            }
            else
            {
                flag = true;
            }
            return flag;
        }

        //查询用户
        public bool InquUser(Entity.UserInfo UserInfo)
        {
            Factory.AddUserFactory fact = new Factory.AddUserFactory();
            IDAL.AddUserIDAL idal = fact.InquUser();
            DataTable table = idal.inquUser(UserInfo);
            bool flag;
            //返回的DataTable类型，如果它的行数等于0，说明该账号无重复，可添加
            if (table.Rows.Count == 0)
            {
                flag = true;
            }
            else
            {
                flag = false;
            }
            return flag;
        }
    }

Factory层：

 public class AddUserFactory
    {
        private static readonly string AssemblyName = "DAL";
        private static readonly string db = ConfigurationManager.AppSettings["DB"];

        //添加用户
        public IDAL.AddUserIDAL AddUser()
        {
            string ClassName = AssemblyName + "." + db + "User";
            IDAL.AddUserIDAL idal = (IDAL.AddUserIDAL)Assembly.Load(AssemblyName).CreateInstance(ClassName);
            return idal;
        }

        //查询用户
        public IDAL.AddUserIDAL InquUser()
        {
            string ClassName = AssemblyName + "." + db + "User";
            IDAL.AddUserIDAL idal = (IDAL.AddUserIDAL)Assembly.Load(AssemblyName).CreateInstance(ClassName);
            return idal;
        }
    }

DAL层：

//添加用户
    public class SqlserverUser:IDAL.AddUserIDAL 
    {
        //插入注册用户信息
        public DataTable addUser(Entity.UserInfo UserInfo) 
        {
            SqlHealper Healper = new SqlHealper();
            SqlParameter[] Params = { new SqlParameter("@UserID", UserInfo.UserID),
                                      new SqlParameter("@PassWord", UserInfo.PassWord),
                                      new SqlParameter("@UserLevel",UserInfo.UserLevel),
                                      new SqlParameter ("@UserName",UserInfo .UserName ),
                                     // new SqlParameter ("@Head",UserInfo.Head) //Head为当前登录管理员的UserID
                                       };
            string sql = "insert into User_Info(UserID,UserPwd,UserName,Level)values(@UserID,@PassWord,@UserName,@UserLevel)";
            DataTable dt = Healper.ExecuteQuery(sql, Params, CommandType.Text);
            return dt;
        }

        //查询注册用户信息是否重复
        public DataTable inquUser(Entity.UserInfo UserInfo) 
        {
            SqlHealper Healper = new SqlHealper();
            SqlParameter[] Params = { new SqlParameter("@UserID", UserInfo.UserID) };
            string sql = "select UserID from User_Info where UserID=@UserID";
            DataTable dt = Healper.ExecuteQuery(sql, Params, CommandType.Text);
            return dt;
        }
    }

IDAL层：

//接口 添加用户窗体
    public interface AddUserIDAL
    {
        
        DataTable addUser(Entity.UserInfo UserInfo);
        DataTable inquUser(Entity.UserInfo UserInfo);
    }

Entity层：

public class UserInfo
    {
        //定义 用户ID 字段
        private string userid;
        public string UserID
        {
            get { return userid; }
            set { userid = value; }
        }
        //定义 密码 字段
        private string password;
        public string PassWord
        {
            get { return password; }
            set { password = value; }
        }
        //定义 用户姓名 字段
        private string username;
        public string UserName
        {
            get { return username; }
            set { username = value; }
        }
        //定义 用户级别 字段
        private string userlevel;
        public string UserLevel
        {
            get { return userlevel; }
            set { userlevel = value; }
        }

    总算是成功敲出了一个窗体呐，虽然耗时有点久，不过对于其中的跳转关系还是熟悉了不少呐。其中入坑多次，留待下次总结啦。

感谢您的阅读~