Help with Serial Comms via C#

Hi,

I am looking at serial comms. My sketch is working find in the IDE serial monitor. But when I use a C# application it is requiring 3 clicks of the send button to send my command. my command is a number (100 for example)

My board lightts up each time the button is pressed, but only reacts after the 3rd click, its like they are being cached. Any ideas?

Any ideas?

Yes, but you probably won't like them.

Instead, I'll just suggest that you post your Arduino code and your C# code.