Newline character in StringBuilder
Also, using the StringBuilder.AppendLine method.
I would make use of the Environment.NewLine property.
Something like:
StringBuilder sb = new StringBuilder();
sb.AppendFormat("Foo{0}Bar", Environment.NewLine);
string s = sb.ToString();
Or
StringBuilder sb = new StringBuilder();
sb.Append("Foo");
sb.Append("Foo2");
sb.Append(Environment.NewLine);
sb.Append("Bar");
string s = sb.ToString();
If you wish to have a new line after each append, you can have a look at Ben Voigt's answer.
With the AppendLine method.
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