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Im very confused with the exact difference between them and different usage approach of these two TextWriter/Reader derived types StringWriter/Reader and StreamReader/Reader.
I know that using them we can deal easily with character based data in stream avoiding byte fuss as working direclty using Filestream…
TextWriter/Reader is an abstract class. It provides an abstraction for writing/reading character based data to/from a data source.
StreamWriter/Reader is a concrete implementation that uses a writeable/readable Stream as data source. Since a Stream is abstraction for writing/reading byte based data, an Encoding instance is required for the translation between characters and bytes.
StringWriter/Reader is a concrete implementation that uses a StringBuilder/string as data source.