Error: Excpetion in USing MScomm control in vb.net 2005

[swati2106]

HI,

I have develop a apllication , To store the GPS data in database, for that , to read GPS data I have used the Mscomm port,

In which I create the object of class RS232
n open that port,
n store the data in to one string type variable , msStr

but some time it store the Mscomminput, n some times it stores nothing, but in mscomm.input will have a GPS data,
why it is So?
n also, it gives n exception: in the line;
mscomm.PortOpen = True
plz, Give me the solution.

thanx



mscomm.PortOpen = True
msStr = mscomm.Input