private string AssemblyString(string username, string password)
        {
            return String.Format(@"using FluentMigrator;
                    namespace UpdatePass
                    {
                        [Migration({2})]
                        public class Class1 : FluentMigrator.Migration
                        {
                            public override void Down()
                            {

                            }

                            public override void Up()
                            {
                                Execute.Sql(""UPDATE LoginAccount SET Password ='{0}' WHERE UserName = '{1}'"");
                            }
                        }
                    }", password, username, DateTime.Now.ToString("yyyyMMddHHmmss"));
        }