How to get rid of mysterious  char

[oveshot16]

When I am writing the degree symbol to a text document using the streamwriter it shows up with a Mysterious  in front of it. I know this has something to do with its encoding but I am new to encoding in general and Have no idea how to work it. here is my code

StreamWriter sw2;
sw2 = File.CreateText("DB\\ioSys.FIL");
string  DegreeC = "°C";
 
IO_file = "t_01_0" + CBA41G1Bus.Text + "_" + StartAddress1 + "_" + temp + "\t" + temp + ".000000\t0\t"+ DegreeC";
 
sw2.WriteLine(IO_file);
 

Any ideas? Thanks

[oveshot16]

In case anyone stumble upon this, after much searching I have found a fix for this problem even thoughI don't know exactly how it works

I changed my code to look like this

StreamWriter sw2= new StreamWriter("Devices.FIL", true, Encoding.GetEncoding("ISO-8859-15")); 
 
string  DegreeC = "°C"; 
 
IO_file = "t_01_0" + CBA41G1Bus.Text + "_" + StartAddress1 + "_" + temp + "\t" + temp + ".000000\t0\t"+ DegreeC"; 
 
sw2.WriteLine(IO_file); 
 

this code would not work correctly with ASCII, UTF7, UTF32, or its default UTF8

In ASCII it replace the degree symbol with question marks.

Oddly it did work with UNICODE but the program I am making this file for doesn't read it so it was pointless.

this ISO was the only thing that made it all functional

[PRR]

Specifying encoding is a must...speciall y when you need to transfer/share file

[sramey]

This was awesome, helped me fix a problem I couldn't figure out. Thanks!

[nojiratz]

Worked for me! Thx for your post!