Save button MFC

[VictorN]

... Note that WriteString does not add the end of line characters, so you would nee to do it yourself when you need it:

CString str = _T("String to write\r\n");
file.WriteString(str);

This code is not 100% correct.
you should NOT add CR ('\r') character yourself, only LF ('\n'). CStdioFile::WriteString will then replace

... any newline character ... written to the file as a carriage return–linefeed pair.

So, the correct code is:

CString str = _T("String to write\n");
file.WriteString(str);

[nancy87]

Hi,

Do i still need mode create if i am just saving all the data into a file i already created.Also which is the line that opens up the directory so that u can save it to your file?Do i have to include seektoend() below
file.Open(filename, CFile::modeCreate | CFile::modeNoTruncate | CFile::modeWrite);


Thanks
nancy

[VictorN]

... Also which is the line that opens up the directory so that u can save it to your file?

You don't need to "open a directory".
Just use CFileDialog::GetPathName to obtain the full path name of a file and then pass this full path name to CStdIo::Open

... Do i have to include seektoend() below
file.Open(filename, CFile::modeCreate | CFile::modeNoTruncate | CFile::modeWrite);

Yes, if you want to append new data to the old file.

[kacaka]

hi guys
may i know which part i went wrong my code is here

void CabcdeDlg::OnBnClickedButton1()
{
CString strTextTime;
m_Time.GetWindowText(strTextTime);

CStdioFile File;

file.Open(lpszfilename, CFile::modeCreate | CFile::modeNoTruncate | CFile::modeWrite);
file.SeekToEnd();

file.Write(" hello world");

CString str = _T("String to write\n");
file.WriteString(str);

file.Close();

}

[sunny_sz]

Do not forget to close file when writting string into a file.

[VictorN]

hi guys
may i know which part i went wrong my code is here
...

What is the problem?

Besides:

1. The variable filename is not defined.
2. You have to use CFileException to know whether your file operations succeded or not. See the code examples in MSDN articles CFile::Open and CStdioFile::CStdioFile

[kacaka]

Hi,victorN
Understand that you do not want to spoonfeed me with giving me the code,but after trying quite long i still cant compile and my code shows lots of arrow care to rpovide more help??sorry i started this nt long ago.

[VictorN]

... after trying quite long i still cant compile and my code shows lots of arrow care to rpovide more help??

But you haven't shown your actual code yet! Nor showed you the exact compile errors!

So how could we help you more?

[kacaka]

hi,
my code as above, may i ask why there are error c2228 like left of 'seekToEnd' must have class /struct union. the same error appears for 'write' n 'close','writestring',error c2065 lpszfileName undeclared identifier'writestring'.

The variable filename is not defined. ?? may i know hw to define tis.

for point 2
You have to use CFileException to know whether your file operations succeded or not. See the code examples in MSDN articles CFile::Open and CStdioFile::CStdioFile

CFileException Exception;
CFile File;

if(File.Open("c:\\data.txt", CFile::modeRead, &Exception) == FALSE)
{



may i know whether the code is correct .

[GCDEF]

hi,
my code as above, may i ask why there are error c2228 like left of 'seekToEnd' must have class /struct union. the same error appears for 'write' n 'close','writestring',error c2065 lpszfileName undeclared identifier'writestring'.

The variable filename is not defined. ?? may i know hw to define tis.

for point 2
You have to use CFileException to know whether your file operations succeded or not. See the code examples in MSDN articles CFile::Open and CStdioFile::CStdioFile

CFileException Exception;
CFile File;

if(File.Open("c:\\data.txt", CFile::modeRead, &Exception) == FALSE)
{



may i know whether the code is correct .

You didn't show any of the code that generated those errors. Keep in mind though that C++ is case sensitive.

[kacaka]

hi ,
i have solved the errors now and it works.any question i will post on a new thread thank you everyone