用户界面与业务逻辑的分离-白红宇

用户界面与业务逻辑的分离

阅读量：5101 次

发布时间：2019-06-13

本文共 4187 字，大约阅读时间需要 13 分钟。

摘自《Visual C++视频技术方案宝典》1.1.1

1 class CStuff   2 {
    3 public:  4     CStuff();  5     virtual ~CStuff();  6 private:  7     int     ID;          //工号  8     CString Name;        //名称  9     CString Sex;         //性别 10     CString Knowledge;   //学历 11     float   Wage;        //工资 12 public: 13     int GetID() const 14     {
   15         return ID; 16     } 17     CString GetName() const 18     {
   19         return Name; 20     } 21     CString GetSex() const 22     {
   23         return Sex; 24     } 25     CString GetKnowledge() const 26     {
   27         return Knowledge; 28     } 29     float GetWage() const 30     {
   31         return Wage; 32     } 33 34     void SetID(int uID) 35     {
   36         ID = uID; 37     } 38     void SetName(CString strName) 39     {
   40         Name = strName; 41     } 42     void SetSex(CString strSex) 43     {
   44         Sex = strSex; 45     } 46     void SetKnowledge(CString strKnowledge) 47     {
   48         Knowledge = strKnowledge; 49     } 50     void SetWage(float fWage) 51     {
   52         Wage = fWage; 53     } 54 55 };

1 class CStuffManage   2 {
     3 public:  4     void SelectStuff(_RecordsetPtr pRecord);  5     BOOL DeleteStuff(CStuff& stuff);  6     BOOL UpdateStuff(CStuff& stuff,CStuff &oldstuff);  7     void IniStuff(CStuff& stuff);  8     BOOL AddStuff(CStuff& stuff);  9     BOOL ValidCheck(CStuff& stuff); 10     CStuffManage(); 11     virtual ~CStuffManage(); 12 }; 13 14 15 //合法性检查 16 BOOL CStuffManage::ValidCheck(CStuff &stuff) 17 {
    18     if (stuff.GetKnowledge().IsEmpty() || stuff.GetSex().IsEmpty() 19         || stuff.GetName().IsEmpty()||stuff.GetWage()<0) 20         return FALSE; 21     else 22         return TRUE; 23 } 24 25 //添加员工信息 26 BOOL CStuffManage::AddStuff(CStuff &stuff) 27 {
    28     CString sql; 29     sql.Format("insert into tb_StuffInfo values (%i, '%s','%s','%s',%f)",stuff.GetID(),stuff.GetName(), 30         stuff.GetSex(),stuff.GetKnowledge(),stuff.GetWage()); 31     try 32     {
    33         m_DataManage.ExecOpt(sql); 34         return TRUE;    35     } 36     catch(...) 37     {
    38         return FALSE; 39     } 40 } 41 //初始化员工信息 42 void CStuffManage::IniStuff(CStuff &stuff) 43 {
    44     stuff.SetID(0); 45     stuff.SetName(""); 46     stuff.SetKnowledge(""); 47     stuff.SetSex(""); 48     stuff.SetWage(0.0); 49 } 50 51 //修改员工信息 52 BOOL CStuffManage::UpdateStuff(CStuff &stuff,CStuff &oldstuff) 53 {
    54     CString sql; 55     sql.Format("update tb_StuffInfo set id = %i, name = '%s',sex = '%s', knowledge = '%s',wage = %f where id = '%s'",stuff.GetID(),stuff.GetName(), 56         stuff.GetSex(),stuff.GetKnowledge(),stuff.GetWage(),oldstuff.GetID()); 57     try 58     {
    59         m_DataManage.ExecOpt(sql); 60         return TRUE;    61     } 62     catch(...) 63     {
    64         return FALSE; 65     } 66 } 67 68 //删除员工信息 69 BOOL CStuffManage::DeleteStuff(CStuff &stuff) 70 {
    71     CString sql; 72     sql.Format("delete  tb_StuffInfo  where id = '%s'",stuff.GetID()); 73     try 74     {
    75         m_DataManage.ExecOpt(sql); 76         return TRUE;    77     } 78     catch(...) 79     {
    80         return FALSE; 81     } 82 } 83 84 //查询员工信息 85 void CStuffManage::SelectStuff(_RecordsetPtr pRecord) 86 {
    87     pRecord = m_DataManage.ExecSelect("select * from tb_StuffInfo"); 88 }

1 void CStuffSysDlg::OnSavefinfo()  2 {
      3     //提供员工信息  4     UpdateData();  5  6     m_Stuff.SetID(m_StuffID);  7  8     m_Stuff.SetName(m_StuffName);  9     10     CString sex; 11     m_StuffSex.GetWindowText(sex); 12     m_Stuff.SetSex(sex); 13 14     CString knowledge; 15     m_StuffKnowledge.GetWindowText(knowledge); 16 17     m_Stuff.SetKnowledge(knowledge); 18 19     m_Stuff.SetWage(m_StuffWage); 20 21     //检查员工信息的合法性 22     if (m_StuffManage.ValidCheck(m_Stuff)) 23     {
     24         //添加员工信息 25         if (m_StuffManage.AddStuff(m_Stuff)) 26             MessageBox("员工信息添加成功"); 27         else 28             MessageBox("员工信息添加失败"); 29         OnClearinfo() ; 30     } 31     else 32         MessageBox("员工信息非法!"); 33 }