一个linq的问题(小弟初学希望大家指教)
DataClasses1DataContext dataaccess = new DataClasses1DataContext();
  message messageEntity1 = new message();
  message messageEntity2 = new message();
  messageEntity1.SIM = i.SIM;
  messageEntity1.messagetime = sendtime;
  messageEntity1.messagecontent = daymessagetemplate;
  messageEntity1.consolenum = "设备号1";

  messageEntity2.SIM = i.SIM;
  messageEntity2.messagetime = sendtime;
  messageEntity2.messagecontent = hourmessagetemplate;
  messageEntity2.consolenum = "设备号1";
   
  try
  {
  dataaccess.messages.InsertOnSubmit(messageEntity1);
  dataaccess.messages.InsertOnSubmit(messageEntity2);
  dataaccess.SubmitChanges();
  }
  catch (Exception ex)
  {

  }

ex = {"此 SqlTransaction 已完成；它再也无法使用。"}

------解决方案--------------------
看不明白，你把相关的代码都贴出来啊
------解决方案--------------------

探讨

               
                try
                {
                    dataaccess.messages.InsertOnSubmit(messageEntity1);
                    dataaccess.messages.InsertOnSubmit(messageEntity2);
                }
                catch (Exception ex)
                {

                }

------解决方案--------------------
hourmessagetemplate = hourmessagetemplate.Replace("DevID", deviceID).Replace("Rate", rate.ToString()).Replace("F01", F1.ToString()).Replace("F02", F2.ToString()).Replace("F03", F3.ToString()).Replace("F04", F4.ToString()).Replace("F05", F5.ToString()).Replace("F06", F6.ToString()).Replace("F07", F7.ToString()).Replace("F08", F8.ToString()).Replace("F09", F9.ToString()).Replace("F10", F10.ToString()).Replace("F11",F11.ToString()).Replace("F12",F12.ToString()); 

好疯狂的代码
------解决方案--------------------
dataaccess.messages.InsertOnSubmit(messageEntity1); 
//dataaccess.messages.InsertOnSubmit(messageEntity2);
try
{ 
dataaccess.SubmitChanges(); 
} 
catch (Exception ex) 
{ 

}
是不是一次只能提交一个对象啊。
------解决方案--------------------
本身没有问题，可能是你在别的地方用了