vs中丢失帮助查看器(HelpViewer)如何处理

    参考网上的一个教程，在此做一下记录!

      1. 在ios镜像安装文件中找到 packages\Help 路径。

     2. 打开控制台命令，cd到这个路径下

     3. 在控制台中键入以下命令进行安装

     msiexec /i help3_vs_net.msi vs_setup=1

     有的时候还会出现点击帮助管理器，管理器一直卡在启动页面的情况，即使多次卸载重装help viewer也解决不了，这种情况貌似没有别的办法，点击控制面板，卸载程序，到vs然后修复即可，有时候即使修复问题仍然没有解决，可以尝试将help viewer（帮助管理器）删除，按照上面的方法再次装一遍，还不行，我也没辙！

      

    关于msiexec的用法:

   The Windows Installer technology uses Msiexec.exe for installing MSI and MSP packages. This tool gives you full control over the installation process, allowing you to set:

    windows安装技术使用Msiexec.exe来安装msi和msp的包，这种工具使你能够完全控制安装过程，允许你设置:

• install options (install, uninstall, administrative install, advertise a product)
• 安装选项(安装，卸载，管理员身份安装...)
• display options (full, basic or no UI during the installation)
• 表现的选项(完全,基本，或者在安装时没有UI)
• restart options (if the machine will be restarted after the installation)
• 重启选项(在安装完成后如果机器要重启的话)
• logging options
• 日志选项
• update options (apply or remove updates)
• 更新选项(运用或移除更新)
• repair options (only for an installed package)
• 修复选项(只为一个已经安装好了的包)
• public properties which are used by the installation
• 安装时软件公开的权限(比如当前用户和全部用户)

The usual form of the msiexec command line is this:

msiexec命令的用法如下:

msiexec.exe <install_option> <path_to_package> [package_parameters]

Install Options

安装选项

When launching an installation package, you can set the install type through these options:

安装一个包是，你可以选择以下选项:

msiexec.exe [/i][/a][/j{u|m|/g|/t}][/x] <path_to_package>

• /i - normal installation 一般安装
• /a - administrative install 管理员形式安装
• /j - advertise the product
  • u - advertise to the current user 只为当前用户安装
  • m - advertise to all users 全部用户
  • /g - the language identifier used by the advertised package
  • /t - apply transform to advertise package
• /x - uninstall the package  移除包

Sample command line:

例子

msiexec.exe /i "C:\Example.msi"

Display Options

The user interface level of the installation can be configured according to the target environment. For example, a package distributed to clients should have a full UI, while a package deployed through Group Policy should have no user interface. Msiexec.exe sets the UI level of the installation through these options:

msiexec.exe /i <path_to_package> [/quiet][/passive][/q{n|b|r|f}]

• /quiet - quiet mode (there is no user interaction)
• /passive - unattended mode (the installation shows only a progress bar)
• /q - set the UI level:
  • n - no UI
  • b - basic UI
  • r - reduced UI
  • f - full UI

Sample command line:

msiexec.exe /i "C:\Example.msi" /qn

Restart Options

Sometimes an installation overwrites files which are in use or needs to reboot the machine in order to finish it. The reboot policy used by the installation can be set through these options:

msiexec.exe /i <path_to_package> [/norestart][/promptrestart][/forcerestart]

• /norestart - the machine will not be restarted after the installation is complete
• /promptrestart - the user will be prompted if a reboot is required
• /forcerestart - the machine will be restarted after the installation is complete

Sample command line:

msiexec.exe /i "C:\Example.msi" /norestart

Logging Options

When debugging an installation package you can use multiple logging parameters in order to create a log. This log will contain different information for each parameter you use:

msiexec.exe [/i][/x] <path_to_package> [/L{i|w|e|a|r|u|c|m|o|p|v|x+|!|*}][/log] <path_to_log>

• /L - enable logging
  • i - include status messages
  • w - include non-fatal warnings
  • e - include all error messages
  • a - mention when an action is started
  • r - include action-specific records
  • u - include user requests
  • c - include the initial UI parameters
  • m - include out-of-memory or fatal exit information
  • o - include out-of-disk-space messages
  • p - include terminal properties
  • v - verbose output
  • x - include extra debugging information
  • + - append to an existing log file
  • ! - flush each line to the log
  • * - log all information, except for v and x options
• /log - the equivalent of /l*

Sample command line:

msiexec.exe /i "C:\Example.msi" /L*V "C:\package.log"

Update Options

The Windows Installer command line can apply or remove updates (patches for example) through these options:

msiexec.exe [/p][/update][/uninstall[/package<product_code_of_package>]] <path_to_package>

• /p - install a MSP patch. When installing a patch silently, you need to set REINSTALLMODE property to "ecmus" and REINSTALL to "ALL". Otherwise the patch will simply update the MSI cached on the target machine.
• /update - apply updates (if there are multiple updates, you can separate them through the ";" character).
• /uninstall - remove an update for a product (if there are multiple updates, you can separate them through the ";" character)
  • /package - specifies the package for which the update is removed.

Sample command lines:

msiexec.exe /p "C:\MyPatch.msp"msiexec.exe /p "C:\MyPatch.msp" /qb REINSTALLMODE="ecmus" REINSTALL="ALL"msiexec.exe /update "C:\MyPatch.msp"msiexec.exe /uninstall {1BCBF52C-CD1B-454D-AEF7-852F73967318}   /package {AAD3D77A-7476-469F-ADF4-04424124E91D}

In the above command line the first GUID is the Patch identifier GUID and the second one is the Product Code of the MSI for which the patch was applied.

Repair Options

If you have an installed package, you can use the Windows Installer command line for repairing it:

msiexec.exe [/f{p|o|e|d|c|a|u|m|s|v}] <product_code>

• /f - repair a package
  • p - repair only if a file is missing
  • o - repair if a file is missing or an older version is installed
  • e - repair if file is missing or an equal or older version is installed
  • d - repair if a file is missing or a different version is installed
  • c - repair if a file is missing or the checksum does not match the calculated value
  • a - forces all files to be reinstalled
  • u - repair all the required user-specific registry entries
  • m - repair all the required computer-specific registry entries
  • s - repair all existing shortcuts
  • v - run from source and recache the local package

Sample command line:

msiexec.exe /fa {AAD3D77A-7476-469F-ADF4-04424124E91D}

In the above command line the GUID is the Product Code of the MSI which will be repaired.

Set public properties

The name of a public property contains only uppercase letters (for example PROPERTY). This type of properties can be set through the command line like this: PROPERTY="value".

Sample command line:

msiexec.exe /i "C:\Example.msi" MY_PROP="myValue"