MFC in written to the file, help you requested-CodePudding

 
Void system2: : DoDataExchange (CDataExchange * symbol) 
{
CDialogEx: : DoDataExchange (symbol); 
DDX_Text (symbol, IDC_EDIT1, sname); 
DDX_Text (IDC_EDIT2 symbol, snum); 
DDX_Text (IDC_EDIT3 symbol, sy); 
DDX_Text (symbol, IDC_EDIT4, sm); 
DDX_Text (symbol, IDC_EDIT5, sd); 
DDX_Text (symbol, IDC_EDIT6 sgame); 
DDX_Text (symbol, IDC_EDIT7, sun); 
DDX_Text (symbol, IDC_EDIT8 sphone); 
/* DDX_Radio (symbol, IDC_RADIO1, man); 
DDX_Radio (symbol, IDC_RADIO2, wman); */
DDX_Text (symbol, IDC_EDIT9, sex); 
}

 
Void system2: : OnBnClickedButton1 () 
{
//TODO: add the control notification handler code 
The student u; 
U.s tuname=sname; 
U.s tunum=snum; 
U.y ear=sy. 
U.m onth=sm; 
U.d ay=sd; 
U.s tugame=sgame; 
U.u nit=sun; 
U.p hone=sphone; 
U.s tusex=sex; 


CFile file; 
if (! (the file Open (_T (" d: \ \ 11. TXT "), CFile: : modeReadWrite | CFile: : modeCreate | CFile: : shareDenyNone))) 
{
MessageBox (_T (" unable to open file ")); 
return; 
} 
File. The Write (& amp; U, sizeof (u)); 
File. The Close (); 
MessageBox (" success "); 

CDialog: : EndDialog (0); 

}

To help you, why I can't write information into the file?

Which is not an error, but just can not write the data

CodePudding user response:

More problems
1. The UpdateData (true); Update control variables binding

CodePudding user response:

reference 1st floor smwhotjay response:

More problems
1. The UpdateData (true); Update control variables binding

Could you speak a little bit in detail about

CodePudding user response:

Student structure definition, it is best to use the original type int char [xx] don't have to c + + type, string

CodePudding user response:

First confirm that the inside of the window input information is to be successful, then write the problem of file

CodePudding user response:

The UpdateData (true);
Don't u//
File. The Write (sname, sname GetLength ());
.

CodePudding user response:

reference 5 floor schlafenhamster reply:

the UpdateData (true);
Don't u//
File. The Write (sname, sname GetLength ());
,,,,,,,

Still won't do ah, the file should be open, can't write in

CodePudding user response:

First call: the UpdateData (true);
Second, don't directly save the object, the object with a pointer, reference,
Should write a member function in public:
Void student: : save (CFile * pFile)
{
PFile - & gt; Write (stuname. GetBuffer (0), stuname. GetLength () + 1);////stuname is cstrings object, and the ASCII code,
PFile - & gt; Write (& amp; Year, sizeof (int));/////year for an int type
.

}

In OnBnClickedButton1 () call:
U.s ave (& amp; The file);
Congrats,

CodePudding user response:

Bind variables UpdateDateI (true), update the controls

CodePudding user response:

Don't u//
afxDump & lt;
File. The Write (sname, sname GetLength ());

CodePudding user response:

The Debug step order look at the structure of the data is correct?

CodePudding user response:

 void system2: : OnBnClickedButton1 () 
{
//TODO: add the control notification handler code 
UpdateDateI (true);//add this line, this is the main problem 
The student u; 
U.s tuname=sname; 
U.s tunum=snum; 
U.y ear=sy. 
U.m onth=sm; 
U.d ay=sd; 
U.s tugame=sgame; 
U.u nit=sun; 
U.p hone=sphone; 
U.s tusex=sex; 


CFile file; 
if (! (the file Open (_T (" d: \ \ 11. TXT "), CFile: : modeReadWrite | CFile: : modeCreate | CFile: : shareDenyNone))) 
{
MessageBox (_T (" unable to open file ")); 
return; 
} 
File. The Write (& amp; U, sizeof (u));//here use sizeof (u) is also wrong, if you want to write, to modify the definition of structure of student 
File. The Close (); 
MessageBox (" success "); 

CDialog: : EndDialog (0); 

}

CodePudding user response:

 void CMFCApp2Dlg: : DoDataExchange (CDataExchange * symbol) 
{
CDialogEx: : DoDataExchange (symbol); 
DDX_Text (symbol, IDC_EDIT1, name); 
DDX_Text (IDC_EDIT2 symbol, the age); 
DDX_Text (IDC_EDIT3 symbol, phone); 
} 

Void CMFCApp2Dlg: : OnBnClickedOk () 
{
//multiple EDIT controls Student class example write a text EDIT control to the file 
The class Student {
Public: 
Cstrings sname; 
Cstrings sage; 
Cstrings sphone; 
Cstrings ss () 
{
Return "{name:" + sname + ", the age: "+ +" sage, phone: "+ sphone +"} "; 
}; 
}; 

CFile file; 
Student S; 
The UpdateData (); 
S.s name=name; nullnullnullnullnullnullnullnullnullnullnullnull