这个错误是怎么形成的啊，崩溃！！！

[local]1[/local]
//一个mfc对话框程序，但是最后录入的时候总是出错，那位大神能帮我看看哪里的问题啊
附件里面是全部的代码[local]2[/local]  劳烦大神看看呀

#include "stdafx.h"
#include "student.h"
#include "studentDlg.h"
#include "comdef.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
    CAboutDlg();

// Dialog Data
    //{{AFX_DATA(CAboutDlg)
    enum { IDD = IDD_ABOUTBOX };
    //}}AFX_DATA

    // ClassWizard generated virtual function overrides
    //{{AFX_VIRTUAL(CAboutDlg)
    protected:
    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
    //}}AFX_VIRTUAL

// Implementation
protected:
    //{{AFX_MSG(CAboutDlg)
    //}}AFX_MSG
    DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
    //{{AFX_DATA_INIT(CAboutDlg)
    //}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(CAboutDlg)
    //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
    //{{AFX_MSG_MAP(CAboutDlg)
        // No message handlers
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CStudentDlg dialog

CStudentDlg::CStudentDlg(CWnd* pParent /*=NULL*/)
    : CDialog(CStudentDlg::IDD, pParent)
{
    //{{AFX_DATA_INIT(CStudentDlg)
    m_strName = _T("");
    m_strNum = _T("");
    m_strSchool = _T("八一中学");
    m_iSex = 0;
    m_iAge = 0;
    //}}AFX_DATA_INIT
    // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
    m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CStudentDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(CStudentDlg)
    DDX_Control(pDX, IDC_LIST3, m_ctrlList);
    DDX_Text(pDX, IDC_NAME, m_strName);
    DDX_Text(pDX, IDC_NUM, m_strNum);
    DDX_CBString(pDX, IDC_COMBO_SCHOOL, m_strSchool);
    DDX_Radio(pDX, IDC_RADIO1, m_iSex);
    DDX_Text(pDX, IDC_AGE, m_iAge);
    DDV_MinMaxInt(pDX, m_iAge, 1, 200);
    //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CStudentDlg, CDialog)
    //{{AFX_MSG_MAP(CStudentDlg)
    ON_WM_SYSCOMMAND()
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    ON_BN_CLICKED(IDC_BUTTON1, OnLuru)
    //}}AFX_MSG_MAP
    ON_BN_CLICKED(IDC_BUTTON2, &CStudentDlg::OnBnClickedButton2)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CStudentDlg message handlers

BOOL CStudentDlg::OnInitDialog()
{
    CDialog::OnInitDialog();
    CRect rect;
    m_ctrlList.GetWindowRect(&rect);
    m_ctrlList.InsertColumn(0,"姓名",LVCFMT_CENTER,rect.Width()*1/5);
    m_ctrlList.InsertColumn(1,"学号",LVCFMT_CENTER,rect.Width()*1/5);
    m_ctrlList.InsertColumn(2,"年龄",LVCFMT_CENTER,rect.Width()*1/5);
    m_ctrlList.InsertColumn(3,"性别",LVCFMT_CENTER,rect.Width()*1/5);
    m_ctrlList.InsertColumn(4,"学校",LVCFMT_CENTER,rect.Width()*1/5);


    // Add "About..." menu item to system menu.

    // IDM_ABOUTBOX must be in the system command range.
    ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
    ASSERT(IDM_ABOUTBOX < 0xF000);

    CMenu* pSysMenu = GetSystemMenu(FALSE);
    if (pSysMenu != NULL)
    {
        CString strAboutMenu;
        strAboutMenu.LoadString(IDS_ABOUTBOX);
        if (!strAboutMenu.IsEmpty())
        {
            pSysMenu->AppendMenu(MF_SEPARATOR);
            pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
        }
    }

    // Set the icon for this dialog.  The framework does this automatically
    //  when the application's main window is not a dialog
    SetIcon(m_hIcon, TRUE);            // Set big icon
    SetIcon(m_hIcon, FALSE);        // Set small icon
   
    // TODO: Add extra initialization here
   
    return TRUE;  // return TRUE  unless you set the focus to a control
}

void CStudentDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
    if ((nID & 0xFFF0) == IDM_ABOUTBOX)
    {
        CAboutDlg dlgAbout;
        dlgAbout.DoModal();
    }
    else
    {
        CDialog::OnSysCommand(nID, lParam);
    }
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CStudentDlg::OnPaint()
{
    if (IsIconic())
    {
        CPaintDC dc(this); // device context for painting

        SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

        // Center icon in client rectangle
        int cxIcon = GetSystemMetrics(SM_CXICON);
        int cyIcon = GetSystemMetrics(SM_CYICON);
        CRect rect;
        GetClientRect(&rect);
        int x = (rect.Width() - cxIcon + 1) / 2;
        int y = (rect.Height() - cyIcon + 1) / 2;

        // Draw the icon
        dc.DrawIcon(x, y, m_hIcon);
    }
    else
    {
        CDialog::OnPaint();
    }
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CStudentDlg::OnQueryDragIcon()
{
    return (HCURSOR) m_hIcon;
}

void CStudentDlg::OnLuru()
{
    // TODO: Add your control notification handler code here
    UpdateData();
    if(m_strName.GetLength()<=0)
    {
        MessageBox("对不起，姓名不能为空");
        return;
    }
    if(m_strNum.GetLength()<=0)
    {
        MessageBox("对不起，学号不能为空");
        return;
    }
   
    CString strSex="";
    if(m_iSex==0)
    {
        strSex="男";
    }
    else if(m_iSex==1)
    {
        strSex="女";
    }
    CString strAge="15";
    if(m_iAge<=0||m_iAge>=200)
    {
        MessageBox("对不起，年龄必须在0-200之间！");
        return;
    }
    else
    {
        strAge.Format("%d",m_iAge);
    }
    if(m_strSchool<=0)
    {
        MessageBox("对不起，学校不能为空！");
        return;
    }
   
    int iItem=0;
   iItem=m_ctrlList.InsertItem(0xffff,(_bstr_t)m_strName);
    m_ctrlList.SetItem(iItem,1,1,(_bstr_t)m_strNum,NULL,0,0,0);
    m_ctrlList.SetItem(iItem,2,1,(_bstr_t)strAge,NULL,0,0,0);
    m_ctrlList.SetItem(iItem,3,1,(_bstr_t)strSex,NULL,0,0,0);
    m_ctrlList.SetItem(iItem,4,1,(_bstr_t)m_strSchool,NULL,0,0,0);
    UpdateData(FALSE);
}


void CStudentDlg::OnBnClickedButton2()
{
    // TODO: 在此添加控件通知处理程序代码
          CStudentDlg::DestroyWindow();
}