VC: file serialization (CFileDialog class, CFile class, CArchive class, and Edit control)

1. serialization:

Void CArFileDlg: Serialize (CArchive & ar)

{

If (ar. IsStoring ())

{// Storing code

UpdateData (true );

Ar <m_add;

Ar <m_age;

Ar <m_name;

Ar <m_sex;

Ar <m_tel;

}

Else

{// Loading code

Ar> m_add;

Ar> m_age;

Ar> m_name;

Ar> m_sex;

Ar> m_tel;

UpdateData (false );

}

}

2. Contact the CFile object:

Void CArFileDlg: OnSave ()

{

// TODO: Add your control notification handler code here

Static char sfile [] = "custom type (*. mm) | *. mm"; // file filtering

CFileDialog dlg (FALSE, "mm", "", NULL, sfile); // object of the File Save dialog box

If (IDOK = dlg. DoModal ())

{

CFile myfile (dlg. GetFileName (), CFile: modeCreate | CFile: modeReadWrite );

CArchive savefile (& myfile, CArchive: store); // CArchive object

Serialize (savefile );

Savefile. Close ();

AfxMessageBox ("saved successfully! ");

}

// CDialog: OnOK ();

/*

UpdateData (true );

// Check the validity of input data

Int len1 = m_id.GetLength ();

Int len2 = m_name.GetLength ();

If (len1> 10 | len2> 10 | len1 = 0 | len2 = 0)

{

AfxMessageBox ("the input character cannot exceed 10 and cannot be blank ");

Return;

}

Char * p_id = new char [10]; // record student ID

Char * p_name = new char [10]; // Record Name

Char * p_score = new char [3]; // record the score

Memset (p_id, '\ 0', 10 );

Memset (p_name, '\ 0', 10 );

Memset (p_score, '\ 0', 3 );

_ Tcscpy (p_id, m_id );

_ Tcscpy (p_name, m_name );

Itoa (m_score, p_score, 10 );

CFile file;

File. Open ("test.txt", CFile: modeCreate | CFile: modeReadWrite );

File. SeekToEnd ();

File. Write (p_id, 10 );

File. Write (p_name, 10 );

File. Write (p_score, 3 );

File. Close ();

Delete p_id;

Delete p_name;

Delete p_score;

AfxMessageBox ("saved successfully ");

 

*/

}

 

Void CArFileDlg: OnOpen ()

{

// TODO: Add your control notification handler code here

Static char sfile [] = "custom type (*. mm) | *. mm"; // file filtering

CFileDialog dlg (TRUE, "mm", "", NULL, sfile); // object of the File Save dialog box

If (IDOK = dlg. DoModal ())

{

CFile myfile (dlg. GetFileName (), CFile: modeReadWrite );

CArchive savefile (& myfile, CArchive: load); // CArchive object

Serialize (savefile );

Savefile. Close ();

GetDlgItem (IDC_NAME)-> EnableWindow (FALSE );

GetDlgItem (IDC_AGE)-> EnableWindow (FALSE );

GetDlgItem (IDC_SEX)-> EnableWindow (FALSE );

GetDlgItem (IDC_TEL)-> EnableWindow (FALSE );

GetDlgItem (IDC_ADD)-> EnableWindow (FALSE );

}

// CDialog: OnOK ();

}