Writing to MemoryStream from BinaryReader - streamreader

Question

i am having an issue when trying to read saved List from binary file back to a List.
the file is encrypted, without encryption i had no problem.
writing method:
private void WriteEncodedFile(FileStream fileStream, MemoryStream memoryStream)
{
StreamReader sr = new StreamReader(memoryStream);
BinaryWriter bw = new BinaryWriter(fileStream);
memoryStream.Seek(0, SeekOrigin.Begin);
string data = sr.ReadToEnd();
var bytes = Encoding.UTF8.GetBytes(data);
for (int i = 0; i < bytes.Length; i++) bytes[i] ^= 0x5a;
bw.Write(Convert.ToBase64String(bytes));
bw.Close();
fileStream.Close();
}
Reading method:
private void ReadEncodedFile(FileStream fileStream, MemoryStream memoryStream)
{
BinaryReader br = new BinaryReader(fileStream);
StreamWriter sw = new StreamWriter(memoryStream);
fileStream.Seek(0, SeekOrigin.Begin);
memoryStream.Seek(0, SeekOrigin.Begin);
string base64 = br.ReadString();
byte[] bytes = Convert.FromBase64String(base64);
for (int i = 0; i < bytes.Length; i++) bytes[i] ^= 0x5a;
string decodedData = Encoding.UTF8.GetString(bytes);
sw.Write(decodedData);
}
when reading the content i can see it in the "decodedData".
however the StreamWriter seems not to write it into the MemoryStream.
any idea?
thanks.

Answer 1

I think you are simply not flushing/closing the stream before checking.
sw.Flush();
or
sw.Close();
if done
and
fileStream.Close(); for good practice too
Edit:
Considering the comment, you need to seek to start of memory stream again before deserialising
i.e. memoryStream.Seek(0, SeekOrigin.Begin); where-ever you do it