C# App: Basic Text Writing Question - Blank Lines

[ShapeMan]

Hi there,

I'm writing a log file using File.AppendText in C# like so:

swLog.WriteLine(msg);

The file is closed and re-opened when another result is ready to be logged. In the output file I get the following:

<Blank line>
msg
<Blank line?
msg

etc.

I don't want these blank lines so I tried swLog.Write(msg); but that obviously leads to the lines being written one after the other, not on a new line. So how do I get each msg written to it's own line without a blank line in between?