StreamReader vs BinaryReader

[DBC User]

Hi sharpies,

Quick question. I have a file with 4 column data with line terminating
with CRLF.

name~age~data~m onth

Where the data is binary data. Most of the time it will be .... (binary
value of FFFFFFF). When I used the stream reader, it read all the
records correctly (used readline). But the problem is, it doesn't put
my data field with actual data, instead it put empty data. So if I have
a row

dbc~34~......~3 (Where .... binary value is FFFFFFFFF)

the program reads in dbc~34~~3.

Does anyone know why stream reader is skipping that value? I haven't
tried with binary reader yet. I will try, but just curious why
streamreader doesn't like the value.

Thanks/
DBC User

[David Browne]

Re: StreamReader vs BinaryReader


"DBC User" <ksunair@gmail. com> wrote in message
news:1110562472 .780942.154290@ l41g2000cwc.goo glegroups.com.. .[color=blue]
> Hi sharpies,
>
> Quick question. I have a file with 4 column data with line terminating
> with CRLF.
>
> name~age~data~m onth
>
> Where the data is binary data. Most of the time it will be .... (binary
> value of FFFFFFF). When I used the stream reader, it read all the
> records correctly (used readline). But the problem is, it doesn't put
> my data field with actual data, instead it put empty data. So if I have
> a row
>
> dbc~34~......~3 (Where .... binary value is FFFFFFFFF)
>
> the program reads in dbc~34~~3.
>
> Does anyone know why stream reader is skipping that value? I haven't
> tried with binary reader yet. I will try, but just curious why
> streamreader doesn't like the value.
>[/color]


You can't have a lines terminated by CRLF and binary data. What if 0xDA
appears in the binary data?

For such a file, just open a FileStream and handle it yourself.

David

[DBC User]

Re: StreamReader vs BinaryReader

Thanks but my question is "is there a reason, why Streamreader is
skipping the data?" I got it working with binarystream.

[Jon Skeet [C# MVP]]

Re: StreamReader vs BinaryReader

DBC User <ksunair@gmail. com> wrote:[color=blue]
> Hi sharpies,
>
> Quick question. I have a file with 4 column data with line terminating
> with CRLF.
>
> name~age~data~m onth
>
> Where the data is binary data. Most of the time it will be .... (binary
> value of FFFFFFF). When I used the stream reader, it read all the
> records correctly (used readline). But the problem is, it doesn't put
> my data field with actual data, instead it put empty data. So if I have
> a row
>
> dbc~34~......~3 (Where .... binary value is FFFFFFFFF)
>
> the program reads in dbc~34~~3.
>
> Does anyone know why stream reader is skipping that value? I haven't
> tried with binary reader yet. I will try, but just curious why
> streamreader doesn't like the value.[/color]

StreamReaders are meant for reading text data, not binary data.
Depending on which encoding is being used, StreamReader is likely to be
reading *something*, but it may be unprintable. Which encoding are you
using?

--
Jon Skeet - <skeet@pobox.co m>

http://www.pobox.com/~skeet

If replying to the group, please do not mail me too