MO Command Prefix in C#

PatO · 01-20-2004, 08:38 PM

I have a Matrix Orbital display that I've used with my VB6.0 app for several years now. Recently, I've begun upgrading my software to C#...

Anyway, in VB, I could use the following to send, say, a clear screen command to the display (control char + command).

Code:

CP = Chr$(&HFE) 
MSComm.Output = CP & "X"

How would I create the 0xFE in C#? I'm using the same MSCOMM control in both systems. Obviously, this syntax won't work in C#.
I've tried things like sending FE as a string, and even converting it to various types of int and char - Int32.Parse("FE", NumberStyles.HexNumber);...
Any tips?

frodobaggins · 01-21-2004, 03:10 AM

I believe in c# you can just send 0xFE

i also think there are built in functions like HexToInt and IntToHex

PatO · 01-21-2004, 06:53 PM

Found It!

Code:

int d = 0xFE;
char d1 = Convert.ToChar(d);
this.axMSComm1.Output = d1 + "X";

Where:

0xFE is the MO Command Prefix

X is the MO command for CLEAR SCREEN

Eventually someone else will ask about this, so I wanted to get it in stone. Plus, it's highly likely that aliens will come down and crash my computer, now that I've jumped a hurdle.

spectrumzz · 01-22-2004, 01:58 AM

Quote: Originally Posted by PatO

Found It!

Code:

int d = 0xFE;
char d1 = Convert.ToChar(d);
this.axMSComm1.Output = d1 + "X";

Where:

0xFE is the MO Command Prefix

X is the MO command for CLEAR SCREEN

Eventually someone else will ask about this, so I wanted to get it in stone. Plus, it's highly likely that aliens will come down and crash my computer, now that I've jumped a hurdle.

or, more objectively, axMSComm1.Output = (char)0xFE + "X";

The conversion is explicit in the cast.

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