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Converting chars to ASCII in C#

Nick Fisher (Consultant) asked:

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Hi guys,

I'm converting an old VB application into C#, and part of the system requires me to convert certain special characters to their ASCII equivalent.

In VB, the code is:

 
sValue = Asc("œ")  'which gives 156
 
sValue = Asc("°")  'which gives 176
 
sValue = Asc("£")  'which gives 163
 


These are the correct values according to http://www.ascii-code.com/.


But when doing the same conversion in C#, the first of these values gives a strange answer.

Here is the code:

 
As ints:
 
int i1 = (int)Convert.ToChar("œ");    // which gives 339
 
int i2 = (int)Convert.ToChar("°");    // which gives 176
 
int i3 = (int)Convert.ToChar("£");    // which gives 163
 

As bytes:
 
byte i1 = (byte)Convert.ToChar("œ");    // which gives 83
 
byte i2 = (byte)Convert.ToChar("°");    // which gives 176
 
byte i3 = (byte)Convert.ToChar("£");    // which gives 163
 


What gives?! :( I'm suspecting it's something to do with the sign bit, but I can't see what.

Many thanks
Tags: C#, VB

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