之前做一个小项目，使用C#检验这些软件的版本，到处找了一些代码，也能作用，记录一下，以防以后用到。

一、检验IIS版本

public static bool checkIIS(string destVersion){            try            {                RegistryKey rk = Registry.LocalMachine;                RegistryKey ver = rk.OpenSubKey(@"SOFTWARE\Microsoft\InetStp");                int majorVersion = Convert.ToInt32(ver.GetValue("majorversion"));                int minorVersion = Convert.ToInt32(ver.GetValue("minorversion"));                Version versionStr = new Version(majorVersion + "." + minorVersion);                if (versionStr >= new Version(destVersion))                    return true;                return false;            }            catch            {                return false;            }}

二、检验SQL Server版本

public static bool checkSQLServer(string destVersion)        {            RegistryKey localKey;            if (Environment.Is64BitOperatingSystem)                localKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64);            else                localKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32);            RegistryKey sub = localKey.OpenSubKey(@"SOFTWARE\Microsoft\Microsoft SQL Server");            object keyInst = null;            if (sub != null)                keyInst = sub.GetValue("InstalledInstances");            if (keyInst != null)            {                try                {                    Version SQLVer = null;                    foreach (string str in (string[])keyInst)                    {                        RegistryKey subSQL = localKey.OpenSubKey(@"SOFTWARE\Microsoft\Microsoft SQL Server\Instance Names\SQL");                        object keySQL = subSQL.GetValue(str);                        RegistryKey subVer = localKey.OpenSubKey(@"SOFTWARE\Microsoft\Microsoft SQL Server\" + (string)keySQL + @"\Setup");                        object keyVer = subVer.GetValue("Version");                        //get version numer                        SQLVer = new Version((string)keyVer);                    }                    //SQL Version should >= 12.1.4100.1                    Version tagVer = new Version(destVersion);                    if (SQLVer >= tagVer)                    {                        return true;                    }                    else                    {                        return false;                    }                }                catch                {                    return false;                }            }            else                return false;        }

三、检验SilverLight版本

public static bool checkSilverLight(string destVersion)        {            try            {                Version version;                RegistryKey rk = Registry.LocalMachine;                RegistryKey ver = rk.OpenSubKey(@"SOFTWARE\Microsoft\Silverlight");                if (ver == null)                    ver = rk.OpenSubKey(@"SOFTWARE\Wow6432Node\Microsoft\Silverlight");                version = new Version(ver.GetValue("Version").ToString());                //version >= 5.1                if (version >= new Version(destVersion))                    return true;                return false;            }            catch            {                return false;            }        }