Reading binary struct

[Blmn]

Hello
how can i creat e structure and read the struct from a binary file?
binaryreader doesn't accept objects so i have to read like reader.getbyte(),
reader.getint32(),... . but it should be a way to create a class líke
FileHeader and read compelet header at once, like C++ .
do you know how?

 

[Andriy Gnennyy]

Hello,

Use binary serialization.
Mark your structure as [Serializable] and use the
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter class.

 

[Blmn]

not possible.
seialization only works when the file being created by serialization. then
they can be deserialized. it can't apply to ordinary files.
actually i don't create these files, i just read'em. the program that create
these files is uder unix and works from 1989. can't even dream about
changing that program.

Hello,

Use binary serialization.
Mark your structure as [Serializable] and use the
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter class.

--
Andriy Gnennyy
pulsar2003@{no-spam}email.ru (Please remove {no-spam} for reply)
X-Unity Test Studio
http://x-unity.miik.com.ua/teststudio.aspx

Hello
how can i creat e structure and read the struct from a binary file?
binaryreader doesn't accept objects so i have to read like reader.getbyte(),
reader.getint32(),... . but it should be a way to create a class líke
FileHeader and read compelet header at once, like C++ .
do you know how?

 

[Hemraj Julha]

Blmn

How about identifying the byte size of your structure, reading a chink of
bytes using ReadBytes ( I hope this method exists) and then mapping to the
fields in your structure?

Cheers

Raj

 

[Sijin Joseph]

The Marshal.PtrToStructure class could be useful in this case. But it
seems you will have to enter the relam of unsafe code. I found some more
articles that might be useful

http://codenewbie.com/tutorials/1852.html
http://www.error-bank.com/[email protected]_Thread.aspx
http://www.dotnetjunkies.com/How To/DF6E5BE5-BCB6-43BB-BEE4-1013A2E3D085.dcik
http://dotnet247.com/247reference/msgs/39/199789.aspx


Sijin Joseph
http://www.indiangeek.net
http://weblogs.asp.net/sjoseph

 

[Nick Malik]

Actually, when you mark an object as serializable and then write it using
the binary formatter, it doesn't put "special" markings stating the object
type. It just writes the data. If you want to, you can read the data from
the data file into a byte array, rearrange the bytes to match the
expectations of the deserializer, create a memory stream from your modified
byte array, and deserialize to the object from the stream.

Honestly, I wouldn't think it to be worth doing, but that's your call.

--- Nick

not possible.
seialization only works when the file being created by serialization. then
they can be deserialized. it can't apply to ordinary files.
actually i don't create these files, i just read'em. the program that create
these files is uder unix and works from 1989. can't even dream about
changing that program.

Hello,

Use binary serialization.
Mark your structure as [Serializable] and use the
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter class.

--
Andriy Gnennyy
pulsar2003@{no-spam}email.ru (Please remove {no-spam} for reply)
X-Unity Test Studio
http://x-unity.miik.com.ua/teststudio.aspx

Hello
how can i creat e structure and read the struct from a binary file?
binaryreader doesn't accept objects so i have to read like reader.getbyte(),
reader.getint32(),... . but it should be a way to create a class líke
FileHeader and read compelet header at once, like C++ .
do you know how?