[RunInstaller( true )]
     public class InstallHelper : Installer
    {
         public override void Install(System.Collections.IDictionary stateSaver)
        {
             base .Install(stateSaver);
 
             try
            {
 
                 string brandType = string .IsNullOrEmpty(Context.Parameters[ "BrandType" ]) ? "HuaShi" : Context.Parameters[ "BrandType" ];
              
                 string assemblypath = Context.Parameters[ "assemblypath" ];
 
                 string pathName = Path.Combine(Path.GetDirectoryName(assemblypath), brandType + ".xml" );
 
                 if (File.Exists(pathName))
                {
                    File.Delete(pathName);
                }
 
                 using (Stream st = File.Open(pathName, FileMode.OpenOrCreate))
                {
                    var writer = XmlWriter.Create(st);
                    writer.WriteStartDocument();
 
                    writer.WriteStartElement( "Info" );
                    writer.WriteElementString( "Seed" , System.Guid.NewGuid().ToString());
                    writer.WriteElementString( "Brand" , brandType);
                    writer.WriteEndElement();
                    writer.Close();
                }
            }
             catch (FormatException e)
            {
                 string s = e.Message;
            }
        }
    }