user1146: i would like to measure some signals from arduino and send it to a pc using USART and display the results in a c# winform application. Does anyone have such a project example ?
Besides, i want to send the data in live time mode, each values should be directly transmitted and then the second measurement ( sample rate 100 kHz )
Thanks a lot 

user10394: Am I missing the point here or wouldn't the C# just have to open a Serial connection to the board and read and write to that to control the program running on the Arduino?
Yes the board is connected by USB, but that's only so it can open a serial connection.
To be honest I don't think you will be able to sample at that speed, you might be better looking at ICs that directly interface with GPIO and RS232/USB.

1146: <p>i would like to measure some signals from arduino and send it to a pc using USART and display the results in a c# winform application. Does anyone have such a project example ?
Besides, i want to send the data in live time mode, each values should be directly transmitted and then the second measurement ( sample rate 100 kHz )
Thanks a lot </p>
 10394: <p>Am I missing the point here or wouldn't the C# just have to open a Serial connection to the board and read and write to that to control the program running on the Arduino?
Yes the board is connected by USB, but that's only so it can open a serial connection.
To be honest I don't think you will be able to sample at that speed, you might be better looking at ICs that directly interface with GPIO and RS232/USB.</p>
