Reading a stream that may have non-ASCII characters

Question

I have an application that reads string data in from a stream. The string data is typically in English but on occasion it encounters something like 'Jalapeño' and the 'ñ' comes out as '?'. In my implementation I'd prefer to read the stream contents into a byte array but I could get by reading the contents into a string. Any idea what I can do to make this work right?

Current code is as follows:

byte[] data = new byte[len];  // len is known a priori
byte[] temp = new byte[2];
StreamReader sr = new StreamReader(input_stream);
int position = 0;
while (!sr.EndOfStream)
{
  int c = sr.Read();
  temp = System.BitConverter.GetBytes(c);
  data[position] = temp[0];
  position++;
}
input_stream.Close();
sr.Close();

Answer 1

Since you're trying to fill the contents into a byte-array, don't bother with the reader - it isn't helping you. Use just the stream:

byte[] data = new byte[len];
int read, offset = 0;
while(len > 0 &&
    (read = input_stream.Read(data, offset, len)) > 0)
{
    len -= read;
    offset += read;
}
if(len != 0) throw new EndOfStreamException();