static void FindSqldiag()

in diagutil/Program.cs [75:120]
36 lines of code
10 McCabe index (conditional complexity)

        static void FindSqldiag()
        {
            try
            {
                bool is64bit = false;
                XmlDocument ConfigDoc = new XmlDocument();
                ConfigDoc.Load(@"pssdiag.xml");
                string sqlver = ConfigDoc["dsConfig"]["Collection"]["Machines"]["Machine"]["Instances"]["Instance"].Attributes["ssver"].Value;

                // SQL 2008 and 2008 R2 share the same tools so we call the same routine for both versions
                if (sqlver == "10.50")
                    sqlver = "10";

                string plat = ConfigDoc["dsConfig"]["DiagMgrInfo"]["IntendedPlatform"].InnerText;


                String x86Env = Environment.GetEnvironmentVariable("CommonProgramFiles(x86)");

                if (x86Env != null)
                {
                    is64bit = true;
                }

                string tools = (string)Registry.GetValue(string.Format(@"HKEY_LOCAL_MACHINE\" + @"SOFTWARE\Microsoft\Microsoft SQL Server\{0}0\Tools\ClientSetup", sqlver), "Path", null);
                string toolswow = (string)Registry.GetValue(string.Format(@"HKEY_LOCAL_MACHINE\" + @"SOFTWARE\Wow6432Node\Microsoft\Microsoft SQL Server\{0}0\Tools\ClientSetup", sqlver), "Path", null);

                string toolsbin = tools;
                if (is64bit == true && plat.Trim().ToUpper() == "I386" && System.IO.File.Exists(toolswow)) //last condition: if a pure 2008 R2 is isntalled sqldiag.exe WOW is not shipped
                {
                    toolsbin = toolswow;
                }

                if (!System.IO.File.Exists(toolsbin + "sqldiag.exe"))
                {
                    System.Windows.Forms.MessageBox.Show("Unable to find SQL Server client tools such as sqldiag.exe from this machine.  Data collection will fail");
                }

                Console.WriteLine(sqlver + "~" + toolsbin);
            }
            catch (Exception ex)
            {
                Console.WriteLine("Error occured in findSqldiag");
                Console.WriteLine(ex.ToString());
            }

        }