How To Perform Serial Communication

Aug 11, 2009

I want to perform serial communication on selecting
.Net Framework2.0--->Visual Basic--->Device application

Presently I am using this code
Imports System.IO.Ports
Imports System.IO.Ports.Serialport
If Button1.Text Is "open port" then
SerialPort1.Open()
Button1.Text="close port"
Button2.Enabled=True
[Code] .....

But I am getting error as
"An unhandled exception of type System.InvalidOperationException occurred in System.dll
Additional Information: The basestream is only available when the port is open".

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[code]....

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[Code]...

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[Code].....

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[code]....

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[Code]...

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[URL]

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