Exception of type 'System.Windows.Forms.AxHost+ InvalidActiveXStateException' was thrown.

Question

hai friends,

   Am just trying to read data from a serial port , when i initilize, the second line throwing an exception. i added both axinterop.mscommlib and mscomlib.
 AxMSComm com = new AxMSComm();
com.CommPort = 1

This is the exeception
'Exception of type 'System.Windows.Forms.AxHost+InvalidActiveXStateException' was thrown.'