C# 检测某版本VC++是否安装

一、根据微软的产品号GUID，调用msi.dll

    class Program
    {
        static void Main(string[] args)
        {
            if (GetProcuct("{GUID}") == INSTALLSTATE.INSTALLSTATE_DEFAULT)
            {
                //操作
            }
        }
        [DllImport("msi.dll")]
        private static extern INSTALLSTATE MsiQueryProductState(string product);
        public static INSTALLSTATE GetProcuct(string product)
        {
            INSTALLSTATE state = MsiQueryProductState(product);
            return state;
        }
    }

    public enum INSTALLSTATE
    {
        INSTALLSTATE_NOTUSED = -7,  // component disabled
        INSTALLSTATE_BADCONFIG = -6,  // configuration data corrupt
        INSTALLSTATE_INCOMPLETE = -5,  // installation suspended or in progress
        INSTALLSTATE_SOURCEABSENT = -4,  // run from source, source is unavailable
        INSTALLSTATE_MOREDATA = -3,  // return buffer overflow
        INSTALLSTATE_INVALIDARG = -2,  // invalid function argument
        INSTALLSTATE_UNKNOWN = -1,  // unrecognized product or feature
        INSTALLSTATE_BROKEN = 0,  // broken
        INSTALLSTATE_ADVERTISED = 1,  // advertised feature
        INSTALLSTATE_REMOVED = 1,  // component being removed (action state, not settable)
        INSTALLSTATE_ABSENT = 2,  // uninstalled (or action state absent but clients remain)
        INSTALLSTATE_LOCAL = 3,  // installed on local drive
        INSTALLSTATE_SOURCE = 4,  // run from source, CD or net
        INSTALLSTATE_DEFAULT = 5,  // use default, local or source
    }

调用 MsiQueryProductState （函数详细：https://docs.microsoft.com/zh-cn/windows/win32/api/msi/nf-msi-msiqueryproductstatea?redirectedfrom=MSDN）函数，来查看VC++是否安装，该方式需要自定义一个枚举 INSTALLSTATE，还需要知道VC++软件的GUID，缺陷也是如果不知道GUID就难以使用。

　　 Visual C++ 2005 Redistributable Package (x86)
    {A49F249F-0C91-497F-86DF-B2585E8E76B7}
    Visual C++ 2005 Redistributable Package (x64)
    {6E8E85E8-CE4B-4FF5-91F7-04999C9FAE6A}
    Visual C++ 2005 Redistributable Package (ia64)
    {03ED71EA-F531-4927-AABD-1C31BCE8E187}
    Visual C++ 2005 SP1 Redistributable Package (x86)
    {7299052B-02A4-4627-81F2-1818DA5D550D}
    Visual C++ 2005 SP1 Redistributable Package (x64)
    {071C9B48-7C32-4621-A0AC-3F809523288F}
    Visual C++ 2005 SP1 Redistributable Package (ia64)
    {0F8FB34E-675E-42ED-850B-29D98C2ECE08}
    Visual C++ 2008 Redistributable Package (x86)
    {FF66E9F6-83E7-3A3E-AF14-8DE9A809A6A4}
    Visual C++ 2008 Redistributable Package (x64)
    {350AA351-21FA-3270-8B7A-835434E766AD}
    Visual C++ 2008 Redistributable Package (ia64)
    {2B547B43-DB50-3139-9EBE-37D419E0F5FA}
    Visual C++ 2008 SP1 Redistributable Package (x86)
    {9A25302D-30C0-39D9-BD6F-21E6EC160475}
    Visual C++ 2008 SP1  Redistributable Package (x86 9.0.30729.6161)
    {9BE518E6-ECC6-35A9-88E4-87755C07200F}
    Visual C++ 2008 SP1 Redistributable Package (x64)
    {8220EEFE-38CD-377E-8595-13398D740ACE}
    Visual C++ 2008 SP1 Redistributable Package (ia64)
    {5827ECE1-AEB0-328E-B813-6FC68622C1F9}
    Visual C++ 2010 Redistributable Package (x86)
    {196BB40D-1578-3D01-B289-BEFC77A11A1E}
    Visual C++ 2010 Redistributable Package (x64)
    {DA5E371C-6333-3D8A-93A4-6FD5B20BCC6E}
    Visual C++ 2010 Redistributable Package (ia64)
    {C1A35166-4301-38E9-BA67-02823AD72A1B}
    Visual C++ 2010 SP1 Redistributable Package (x86 10.0.40219)
    {F0C3E5D1-1ADE-321E-8167-68EF0DE699A5}
    Visual C++ 2010 SP1 Redistributable Package (x64)
    {1D8E6291-B0D5-35EC-8441-6616F567A0F7}
    Visual C++ 2010 SP1 Redistributable Package (ia64)
    {88C73C1C-2DE5-3B01-AFB8-B46EF4AB41CD}
    Visual C++ 2013 Redistributable Package (x86 12.0.21005)
    {13A4EE12-23EA-3371-91EE-EFB36DDFFF3E} and {F8CFEB22-A2E7-3971-9EDA-4B11EDEFC185}
    Visual C++ 2013 Redistributable Package (x64)
    {929FBD26-9020-399B-9A7A-751D61F0B942} and {A749D8E6-B613-3BE3-8F5F-045C84EBA29B}

（参考：https://www.cnblogs.com/yidanda888/archive/2004/01/13/11987411.html）

二、查询本地注册表：“SOFTWARE\WOW6432Node\Microsoft\VisualStudio”。这里以查询VC++2015为例

        public static string GetProcuct()
        {
            RegistryKey key = Registry.LocalMachine;
            RegistryKey rkOpen = key.OpenSubKey("SOFTWARE\\WOW6432Node\\Microsoft\\VisualStudio\\14.0\\VC\\Runtimes\\x64", false);
            if (rkOpen.GetValue("Version") == null)
            {
                return null;
            }
            return rkOpen.GetValue("Version").ToString();
        }

缺陷是当安装VC++2017时，将会替换掉该注册表里的信息。https://developercommunity.visualstudio.com/content/problem/332815/visual-c-redistributable-2017-install-removes-visu.html

（参考：https://www.cnblogs.com/liujx2019/p/10307520.html）

三、查询注册表的删除目录，因为如果安装VC++就会在删除目录里存在。

        public static void GetProcucts()
        {
            List<string> Lists = new List<string>();
            RegistryKey key = Registry.LocalMachine;
            GetRegistry(key, @"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall", ref Lists);
            if (Lists.Count > 0)
            {if (!string.IsNullOrEmpty(Lists.FirstOrDefault(x => x.Contains("2015"))))
                {
                    //操作
                }
            }
        }
        private static void GetRegistry(RegistryKey keyR, String str, ref List<string> list)
        {

            string[] subkeyNames;
            string[] subvalueNames;
            RegistryKey aimdir = keyR.OpenSubKey(str);
            if (aimdir != null)
            {
                subvalueNames = aimdir.GetValueNames();
                foreach (string valueName in subvalueNames)
                {
                    if (valueName.ToLower().Equals("displayname") || valueName.ToLower().Equals("productname"))
                    {
                        if (aimdir.GetValue(valueName) != null &&
                            aimdir.GetValue(valueName).ToString().ToLower().Contains("microsoft visual c++ 20") &&
                            aimdir.GetValue(valueName).ToString().ToLower().Contains("redistributable"))
                        {
                            list.Add(aimdir.GetValue(valueName).ToString());
                        }
                    }
                }
                subkeyNames = aimdir.GetSubKeyNames();
                foreach (string keyName in subkeyNames)
                {
                    GetRegistry(aimdir, keyName, ref list);
                }
            }
        }