This method clears the internal state of the System.Text.Encoder object. The method clears any state information preserved from a previous call to Encoder.GetBytes(Char*, int, Byte*, int, bool) or Decoder.Convert(Byte[], int, int, Char[], int, int, bool, Int32@, Int32@, Boolean@), including trailing characters at the end of the previous data block, such as an unmatched high surrogate.

Your application should call the Reset method if it wants to reuse the same encoder even after an exception is thrown by Encoder.GetBytes(Char*, int, Byte*, int, bool) or Encoder.GetByteCount(Char*, int, bool), or if the application switches streams.