StringBuilder.AppendLine Method (String)
Appends a copy of the specified string followed by the default line terminator to the end of the current StringBuilder object.
Assembly: mscorlib (in mscorlib.dll)
The default line terminator is the current value of the Environment.NewLine property.
The capacity of this instance is adjusted as needed.Notes to Callers
In the .NET Framework 4, when you instantiate the StringBuilder object by calling the StringBuilder constructor, both the length and the capacity of the StringBuilder instance can grow beyond the value of its MaxCapacity property. This can occur particularly when you call the Append and AppendFormat methods to append small strings.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2