VC++ File Handling : Reading File from Particular Position Using Seek( ) Function

void CFile1Dlg::OnWrite()

{

// TODO: Add extra validation here

UpdateData();

CFile cf;

char ch[100];

cf.Open("d://aits.txt",CFile::modeCreateCFile::modeWrite);

strcpy(ch,m_edit1);

cf.Write(ch,m_edit1.GetLength());

cf.Close();

m_edit1="";

UpdateData(FALSE);

}

void CFile1Dlg::OnRead()

{

// TODO: Add your control notification handler code here

UpdateData();

if(m_pos1==0)

{

MessageBox("please enter position other wise start reading from begining of file");

}

pos=m_pos1;

CFile cf;

char ch[100];

cf.Open("d://aits.txt",CFile::modeRead);

cf.SeekToBegin();

cf.Seek(pos,CFile::begin);

cf.Read(ch,cf.GetLength());

m_edit1="";

for(unsigned int i=0;i

{

m_edit1+=ch[i];

}

cf.Close();

UpdateData(FALSE);

}