用CFile 打开文件出错，求助(页 1) - VC.NET论坛

弱智抓蛙男 发表于 2006-12-17 11:45

用CFile 打开文件出错，求助

//代码片段如下： //打开文件 bool File_manager::Open_file(CString path) { CFile info_file; CString str_buffer; CFileException cfe; //AfxMessageBox(path); if(info_file.Open(path,CFile::shareDenyNone,&cfe) == 0) { return FALSE; } CArchive ar(&info_file,CArchive::load); ar>>str_buffer; //info_file.Read(str_buffer,2); AfxMessageBox(str_buffer); ar.Close(); info_file.Close(); return TRUE; } 第一次用vc++.net打开文件，水平有限， 编译通过，打开某个txt文件时出错信息为： “试图越过其尾端对一个未知名的文件进行读写” 2个都是txt文件，一个能读，一个要出这个错，不知道为什么，请高手解答， 不甚感激！！

弱智抓蛙男 发表于 2006-12-17 11:48

2个txt文件，一个内容简单： sdfasdfasdfasdfsadf dsfasdfasdfasd sadfasdfasdf

弱智抓蛙男 发表于 2006-12-17 11:51

另一个大一点： <a href="http://www.codeproject.com/listctrl/" target="_blank" >http://www.codeproject.com/listctrl/</A> <a href="http://www.vckbase.com/document/listdoc.asp?mclsid=3&sclsid=323" target="_blank" >http://www.vckbase.com/document/listdoc.asp?mclsid=3&sclsid=323</A>
void CChildFrame::OnFileOpen() { // szFilters is a text string that includes two file name filters: // "*.my" for "MyType Files" and "*.*' for "All Files." char CChildFrame::szFilters[]= "MyType Files (*.my)|*.my|All Files (*.*)|*.*||";
 // Create an Open dialog; the default file name extension is ".my". CFileDialog fileDlg (TRUE, "my", "*.my", OFN_FILEMUSTEXIST| OFN_HIDEREADONLY, szFilters, this); // Display the file dialog. When user clicks OK, fileDlg.DoModal() // returns IDOK. if( fileDlg.DoModal ()==IDOK ) { CString pathName = fileDlg.GetPathName(); // Implement opening and reading file in here. ... //Change the window's title to the opened file's title. CString fileName = fileDlg.GetFileTitle (); SetWindowText(fileName); }
}
All items in a list view control must have the same number of subitems.
Class CListCtrl provides several functions for inserting, deleting, finding, and modifying these items. For more information, see CListCtrl::GetItem, CListCtrl::InsertItem, and CListCtrl::FindItem, Using CListCtrl: Adding Items to the Control, and Using CListCtrl: Scrolling, Arranging, Sorting, and Finding in List Controls.
 VC中ctrllist的使用与数据库链接 
清浪冲天　马敬发　QQ: 283989349 E-mail: <a href="mailto:mjf150080@tom.com" target="_blank" >mjf150080@tom.com</A> 
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// DIALOG_TRAINCOURSE.cpp : implementation file //
#include stdafx.h #include train.h #include DIALOG_TRAINCOURSE.h #include CourseInfo.h #include DIALOG_APPISE.h #include CourseSet.h
#ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif
///////////////////////////////////////////////////////////////////////////// // CDIALOG_TRAINCOURSE dialog
 CDIALOG_TRAINCOURSE::CDIALOG_TRAINCOURSE(CWnd* pParent /*=NULL*/) : CDialog(CDIALOG_TRAINCOURSE::IDD, pParent) { //{{AFX_DATA_INIT(CDIALOG_TRAINCOURSE) // NOTE: the ClassWizard will add member initialization here //}}AFX_DATA_INIT }
 void CDIALOG_TRAINCOURSE::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CDIALOG_TRAINCOURSE) DDX_Control(pDX, IDC_LIST1, m_content); //}}AFX_DATA_MAP }
 BEGIN_MESSAGE_MAP(CDIALOG_TRAINCOURSE, CDialog) //{{AFX_MSG_MAP(CDIALOG_TRAINCOURSE) ON_BN_CLICKED(IDC_BUTTONADD, OnButtonadd) ON_BN_CLICKED(IDC_BUTTONDEL, OnButtondel) //}}AFX_MSG_MAP END_MESSAGE_MAP()
///////////////////////////////////////////////////////////////////////////// // CDIALOG_TRAINCOURSE message handlers
void CDIALOG_TRAINCOURSE::OnButtonadd() { // TODO: Add your control notification handler code here m_database.Close(); CCourseInfo m_courseinfo; m_courseinfo.m_database.Open(_T(train)); m_courseinfo.DoModal(); RefreshData(); }
void CDIALOG_TRAINCOURSE::OnOK() { // TODO: Add extra validation here CDIALOG_APPISE m_apprisemanager; int i=m_content.GetSelectionMark(); CString strSQL; if(i==-1){ MessageBox(please choose a course first!); } else{ m_apprisemanager.course_id=atoi(m_content.GetItemText(i,0)); m_database.Close(); m_apprisemanager.m_database.Open(_T(train)); m_apprisemanager.DoModal(); }
}
BOOL CDIALOG_TRAINCOURSE::OnInitDialog() { CDialog::OnInitDialog(); // TODO: Add extra initialization here m_content.InsertColumn(0,课程号); m_content.InsertColumn(1,课程类别); m_content.InsertColumn(2,课程中文名称); m_content.InsertColumn(3,课程英文名称); m_content.InsertColumn(4,课程描述); m_content.InsertColumn(5,课程学时); m_content.InsertColumn(6,教材); m_content.InsertColumn(7,等效课程); m_content.InsertColumn(8,预修课程); m_content.InsertColumn(9,初训/复训标志); m_content.InsertColumn(10,开课部门); RECT rect; m_content.GetWindowRect(&rect); int wid = rect.right - rect.left; m_content.SetColumnWidth(0,wid/11); m_content.SetColumnWidth(1,wid/11); m_content.SetColumnWidth(2,wid/11); m_content.SetColumnWidth(3,wid/11); m_content.SetColumnWidth(4,wid/11); m_content.SetColumnWidth(5,wid/11); m_content.SetColumnWidth(6,wid/11); m_content.SetColumnWidth(7,wid/11); m_content.SetColumnWidth(8,wid/11); m_content.SetColumnWidth(9,wid/11); m_content.SetColumnWidth(10,wid/11); m_content.SetExtendedStyle(LVS_EX_FULLROWSELECT); RefreshData(); return TRUE; // return TRUE unless you set the focus to a control // EXCEPTION: OCX Property Pages should return FALSE }
void CDIALOG_TRAINCOURSE::RefreshData() { if(!m_database.IsOpen()){ m_database.Open(_T(train)); } m_content.DeleteAllItems(); CCourseSet m_recordset(&m_database); CString strSQL; strSQL.Format(select * from COURSE); m_recordset.Open(AFX_DB_USE_DEFAULT_TYPE,strSQL); CDBVariant varValue; if(m_recordset.GetRecordCount()!=0) m_recordset.MoveFirst(); char buf[20]; int i=0; while(!m_recordset.IsEOF()) { int temp=0; m_recordset.GetFieldValue(temp,varValue); sprintf(buf,%d,varValue.m_iVal); m_content.InsertItem(i,buf); m_recordset.GetFieldValue(1,varValue); m_content.SetItemText(i,1,varValue.m_pstring->GetBuffer(1)); m_recordset.GetFieldValue(2,varValue); m_content.SetItemText(i,2,varValue.m_pstring->GetBuffer(1)); m_recordset.GetFieldValue(3,varValue); m_content.SetItemText(i,3,varValue.m_pstring->GetBuffer(1)); m_recordset.GetFieldValue(4,varValue); m_content.SetItemText(i,4,varValue.m_pstring->GetBuffer(1)); m_recordset.GetFieldValue(5,varValue); sprintf(buf,%d,varValue.m_iVal); m_content.SetItemText(i,5,buf); m_recordset.GetFieldValue(6,varValue); m_content.SetItemText(i,6,varValue.m_pstring->GetBuffer(1)); m_recordset.GetFieldValue(7,varValue); sprintf(buf,%d,varValue.m_iVal); m_content.SetItemText(i,7,buf); m_recordset.GetFieldValue(8,varValue); sprintf(buf,%d,varValue.m_iVal); m_content.SetItemText(i,8,buf); m_recordset.GetFieldValue(9,varValue); sprintf(buf,%d,varValue.m_chVal); m_content.SetItemText(i,9,buf); m_recordset.GetFieldValue(10,varValue); sprintf(buf,%d,varValue.m_iVal); m_content.SetItemText(i,10,buf); m_recordset.MoveNext(); i++; } }
void CDIALOG_TRAINCOURSE::OnButtondel() { // TODO: Add your control notification handler code here int i=m_content.GetSelectionMark(); CString strSQL; if(i==-1){ MessageBox(please choose a record first!); } else{ int keyid=atoi(m_content.GetItemText(i,0)); strSQL.Format(delete from COURSE where COURSE_ID=%d,keyid); m_database.ExecuteSQL(strSQL); strSQL.Format(delete from COURSE_EVALUATION where COURSE_ID=%d,keyid); m_database.ExecuteSQL(strSQL); m_database.Close(); RefreshData(); } }
void CDIALOG_TRAINCOURSE::OnCancel() { // TODO: Add extra cleanup here m_database.Close(); CDialog::OnCancel(); }

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