RIM.VSNDK_Package.VSNDK_PackagePackage.SetNDKPath C# (CSharp) Method

        private void SetNDKPath()
        {
            //Initialize NDK if possible.
            RegistryKey rkHKCU = Registry.CurrentUser;
            RegistryKey rkNDKPath = null;
            string qnx_target = "";
            string qnx_host = "";

            try
            {

                rkNDKPath = rkHKCU.CreateSubKey("Software\\BlackBerry\\BlackBerryVSPlugin");
                qnx_host = rkNDKPath.GetValue("NDKHostPath").ToString();
                qnx_target = rkNDKPath.GetValue("NDKHostPath").ToString();

                if (qnx_host == "")
                {
                    string[] filePaths = Directory.GetFiles(System.Environment.GetFolderPath(System.Environment.SpecialFolder.LocalApplicationData) + @"\Research In Motion\BlackBerry Native SDK\qconfig\", "*.xml");

                    if (filePaths.Length >= 1)
                    {
                        XmlDocument xmlDoc = new XmlDocument();
                        xmlDoc.Load(filePaths[0]);
                        XmlNodeList name = xmlDoc.GetElementsByTagName("name");
                        XmlNodeList hostpath = xmlDoc.GetElementsByTagName("host");
                        XmlNodeList targetpath = xmlDoc.GetElementsByTagName("target");

                        qnx_target = targetpath[0].InnerText;
                        qnx_host = hostpath[0].InnerText;

                        rkNDKPath.SetValue("NDKHostPath", qnx_host);
                        rkNDKPath.SetValue("NDKTargetPath", qnx_target);

                    }
                }

                string qnx_config = GlobalFunctions.bbndkPathConst + @"\features\com.qnx.tools.jre.win32_1.6.0.43\jre\bin";

                System.Environment.SetEnvironmentVariable("QNX_TARGET", qnx_target);
                System.Environment.SetEnvironmentVariable("QNX_HOST", qnx_host);

                string ndkpath = string.Format(@"{0}/usr/bin;{1}", qnx_host, qnx_config) +
                    System.Environment.GetEnvironmentVariable("PATH");
                System.Environment.SetEnvironmentVariable("PATH", ndkpath);

            }
            catch (Exception ex)
            {
                string e = ex.ToString();
            }

            rkNDKPath.Close();
            rkHKCU.Close();
        }