I would like to know the difference (if there is any) between :
StringBuilder sb = new StringBuilder();
sb.Append("xxx");
sb.Append("yyy");
sb.Append("zzz");
And :
StringBuilder sb = new StringBuilder();
sb.Append("xxx")
.Append("yyy")
.Append("zzz");
There’s no difference, the latter case is called ‘Fluent Syntax’.