Facing A Descriptor Issue.. plz resolve..

The problem is your calls to Ptr() that will return a raw pointer into the buffer.

When filling a descriptor from a raw pointer, it will read until it finds a NULL character.

BUT, descriptors are not NULL-terminated, so it will read on into memory until it happens to find a NULL character, and these extra reads are your garbage.

Try change your code to access the data only through the descriptors instead, (avoid the calls to Ptr()) and your problem will be solved.

You are still using calls to Ptr() in that code... Don't do that.

Your code should be able to look like this:

RFile   lFileWrite;                       
lFileWrite.Replace(lfsession,KNewFile,EFileWrite|EFileStream);

TBuf8<200> buf8;
len = CnvUtfConverter::ConvertFromUnicodeToUtf8(buf8,iContainer->Data());

lFileWrite.Write(buf8);
lFileWrite.Close();

Also, in your TDes& CMyContainer :: Data(), you should not return iTemp->Des().
Instead do a

return *iTemp;

Consider returning a TDesC& instead of a TDes& too.