Random Generator

/*Random generator*/
http://www.codeproject.com/Articles/14403/Generating-Unique-Keys-in-Net

update history=>>>>>

    protected Boolean UpdateLoginsHistory()
        {
            Int32 i32RetVal = 0;

            try
            {
                SQLDatabase DBConnection = new SQLDatabase(ConfigurationManager.ConnectionStrings["dbConnectionString"].ToString());
                if( DBConnection == null )
                    throw new NullReferenceException();

                DBConnection.Connect();

                LoginDB Function = new LoginDB( DBConnection );
                if( Function == null )
                    throw new NullReferenceException();

                //Function.UpdateLoginsHistory( Context.User.Identity.Name, Context.User.Identity.Name, ref i32RetVal );

                Function.UpdateLoginsHistory( Session["LoginUserName"].ToString(), Session["LoginUserName"].ToString(), ref i32RetVal );
                if( i32RetVal < 0 )
                    return false;

                DBConnection.Disconnect();
            }
            catch( SQLException Ex )
            {
                ERP.Global.ErrorMessage( Ex, Context );
                return false;
            }
            catch( NullReferenceException Ex )
            {
                ERP.Global.ErrorMessage( Ex, Context );
                return false;
            }


            return true;
        }