C#应用程序运行时候检测Framework安装

因为程序是放在Ukey（U盘）中运行，不是Setup打包程序，所以启动时如果未安装Framework不能直接运行.net的exe启动程序，

解决方案是：

由C++写的Startup.exe做启动程序，同时检测本机是否安装Framework，如果没有则有c++调用启动安装，安装Framework结束后，启动C#应用程序。

其中C++的检测安装启动程序代码如下，VC++6.0实现，做了一个隐藏的form窗体：

[cpp]
// StartUpDlg.cpp : implementation file
//

#include "stdafx.h"
#include "StartUp.h"
#include "StartUpDlg.h"
//#include "WinBase.h"
//#include "shlobj.h"
//#include "shellapi.h"
#include "Tlhelp32.h"

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

/////////////////////////////////////////////////////////////////////////////
// CStartUpDlg dialog

CStartUpDlg::CStartUpDlg(CWnd* pParent /*=NULL*/)
    : CDialog(CStartUpDlg::IDD, pParent)
{
    //{{AFX_DATA_INIT(CStartUpDlg)
        // NOTE: the ClassWizard will add member initialization here
    //}}AFX_DATA_INIT
    // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
    m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CStartUpDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(CStartUpDlg)
        // NOTE: the ClassWizard will add DDX and DDV calls here
    //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CStartUpDlg, CDialog)
    //{{AFX_MSG_MAP(CStartUpDlg)
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    ON_BN_CLICKED(btnCheckFramework, OnbtnCheckFramework)
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CStartUpDlg message handlers

BOOL CStartUpDlg::OnInitDialog()
{
    CDialog::OnInitDialog();

    // 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
    OnbtnCheckFramework();
    // TODO: Add extra initialization here

    return TRUE; // return TRUE unless you set the focus to a control
}

// 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 CStartUpDlg::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();
    }
    static int i=2;
    if(i>0)
    {
        i--;
        ShowWindow(SW_HIDE);
    }
    else
    {
        CDialog::OnPaint();
    }
}

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

//检测FrameWork版本
LPSTR regeditVision[] ={//"SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v2.0",
//"SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v2.0.50727",
//"SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v3.0",
//"SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v3.5",
"SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v4.0"};

//检查注册表
bool CheckFrameworkRegedit()
{
    bool result=TRUE;
    //判断注册表是否存在
    //for (int i=0;i<4;i++)
    //{
        HKEY ck;//注册表的键

        //检查注册表是否存在这个键值
        if(ERROR_SUCCESS == RegOpenKeyEx(HKEY_LOCAL_MACHINE,
            regeditVision[0],0,KEY_ALL_ACCESS,&ck))
        {
            RegCloseKey(ck);//关闭注册表
            result=TRUE;
            //break;
        }
        else
        {
            result=FALSE;
        }
&

补充：软件开发 , C# ,