Application developed in VB works and not the same in C#

[EduardoBan]

I'm trying to make an application in C #, create an application as recommended in the forum
Topic: http://advancedhmi.com/forum/index.php?topic=774.msg3726#msg3726
I use "modbusRTUCom", also it has "AnalogValueDisplay" and "ChartBySampling" the application in C # does not work, is connected, but not graphic or indicate any value .
I think the same but another application in Visual Basic and functioning properly. The strange thing is not work the application made in C # and VB function properly, are identical.

Test connecting to a Modbus RTU simulator on a virtual port on the PC and in both cases it worked.