Call_getInfo System.AccessViolationException

[BadDeveloper2022]

未处理System.AccessViolationException
HResult=-2147467261
Message=尝试读取或写入受保护的内存。这通常指示其他内存已损坏。
Source=pjsua2
StackTrace:
在 pj.Call.getInfo(Call* , CallInfo* )
在 CSharp_Call_getInfo(Void* jarg1)
在 PJSIP.pjsua2PINVOKE.Call_getInfo(HandleRef jarg1)
在 PJSIP.Call.getInfo() 位置 D:\freeSwitch\SIP\PJSip-CSharp-master\pjsua2_net\Classes\Call.cs:行号 55
在 pjsipDotNetSDK.Call.getInfo() 位置 D:\freeSwitch\SIP\PJSIPDotNetSDK-master\pjsipDotNetSDK\Call.cs:行号 756
在 pjsipDotNetSDK.Call.get_State() 位置 D:\freeSwitch\SIP\PJSIPDotNetSDK-master\pjsipDotNetSDK\Call.cs:行号 67
在 pjsipDotNetSDK.Call.getAudioMedia() 位置 D:\freeSwitch\SIP\PJSIPDotNetSDK-master\pjsipDotNetSDK\Call.cs:行号 698
在 TestGui.MainWindow.<Window_Loaded>b__2_0(Object a, ElapsedEventArgs b) 位置 D:\freeSwitch\SIP\PJSIPDotNetSDK-master\TestGui\MainWindow.xaml.cs:行号 77
在 System.Timers.Timer.MyTimerCallback(Object state)
在 System.Threading.TimerQueueTimer.CallCallbackInContext(Object state)
在 System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
在 System.Threading.TimerQueueTimer.CallCallback()
在 System.Threading.TimerQueueTimer.Fire()
在 System.Threading.TimerQueue.FireNextTimers()
在 System.Threading.TimerQueue.AppDomainTimerCallback()
InnerException:

[StrikeForceZero]

Do you have more context on when/where this error occurs? I've encountered it plenty of times before and they depend on what is going on at the time.

[BadDeveloper2022]

project .net framework 2.0 can not work.
i use VS2008 VS2010 VS2015 build . but choice 2.0 build DLL file run the win XP can not work.
Many of our devices are XP based.

[StrikeForceZero]

I haven't tested this on windows XP.
But I noticed my github copy didn't contain the latest changes, so I just took some time to test and push those up. Maybe you will have better luck with that branch.

https://github.com/StrikeForceZero/PJSIPDotNetSDK/tree/dev/v1.0.x

[phphappy]

my vs is 2017 and OS System is Win10. sip server is freeswitch 1.8.
I have the same problem.
在 pj.Call.getInfo(Call* , CallInfo* )
在 CSharp_Call_getInfo(Void* jarg1)
在 PJSIP.pjsua2PINVOKE.Call_getInfo(HandleRef jarg1)
when I click call