A thread-safe wrapper.
Type Reason ArgumentNullException writer is null.
All write operations to the returned wrapper will be thread safe. You call this method to ensure that only one thread at a time can execute the methods on the System.IO.TextWriter instance that is returned. For more information about synchronization and threading, see Synchronizing Data for Multithreading.
For a list of common I/O tasks, see Common I/O Tasks.