TextWriter.WriteLine Method (String, Object)
Writes out a formatted string and a new line, using the same semantics as Format.
Assembly: mscorlib (in mscorlib.dll)
A string or object is passed in as null.
The TextWriter is closed.
An I/O error occurs.
The format specification in format is invalid.
The number indicating an argument to be formatted is less than zero, or larger than or equal to arg.Length.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.