C#检验IIS版本、SQL Server版本、SilverLight版本

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;
            }
        }