DMDSystemLoadData DLD01 = new DMDSystemLoadData();
            Thread Thread01 = new Thread(new ParameterizedThreadStart(ThreadReadDataFormDataBase));
            MSS.ThreadBase.Parametric.parametricBase PB01 = new MSS.ThreadBase.Parametric.parametricBase();
            PB01.HashTableObjec.Add("Control", PB01_Login); //用与值的回调
            PB01.HashTableObjec.Add("UserName", UserName);
            PB01.HashTableObjec.Add("PassWord", PassWord);
            PB01.HashTableObjec.Add("Type", ThreadBase.RemotingType.UserService);
            DLD01.PReadDataFormDataBase += new DLoadData(DLD01_PReadDataFormDataBase);
            Thread01.IsBackground = true;
            Thread01.Start(PB01);

以后是委托的函数

     void DLD01_PReadDataFormDataBase(object O1, MSS.ThreadBase.Parametric.parametricBase PB01)
        {

发生错误就在这。为什么PB01为null，如果不使用smartassembly加密则PB01有值，如果加密后就为null ，是混淆出错，还是smartassembly不支持的问题。

            if (PB01 == null)
            {
                PB01_Login.Visible = false;
                Base.MsgBox.Show("登录失败！请输入用户名后重试！");
                return;
            }