Equivalent of Java's "ByteBuffer.putType()" in C#

Question

I am trying to format a byte array in C#, by porting a code from Java. In Java, the methods "buf.putInt(value);", buf.putShort, buf.putDouble, (and so forth) are used. However I don't know how to port this to C#. I have tried the MemoryStream class, but there is no method to put a specific type at the end of the byte array.

Question: What is the equivalent of Java's "ByteBuffer.putType(value)" in C#? Thanks!

user7116 · Accepted Answer · 2009-08-11T18:10:59.980

9

You can use a BinaryWriter and your MemoryStream:

MemoryStream stream = new MemoryStream();
using (BinaryWriter writer = new BinaryWriter(stream))
{
    writer.Write(myByte);
    writer.Write(myInt32);
    writer.Write("Hello");
}

byte[] bytes = stream.ToArray();

edited Aug 11 '09 at 18:10

answered Aug 11 '09 at 16:45

user7116

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Thank you, I will use this solution in the end :) – Lazlo Aug 11 '09 at 20:19
Most of your variable names have 6 letters in them but a few don't. My OCD is kicking in and I almost want to fix them... – Corey Ogburn Oct 04 '12 at 17:22

score 5 · Answer 2 · edited Sep 27 '11 at 15:26

5

Try the BinaryWriter class:

using (var binaryWriter = new BinaryWriter(...))
{
    binaryWriter.Write(323);
    binaryWriter.Write(3487d);
    binaryWriter.Write("Hello");
}

edited Sep 27 '11 at 15:26

answered Aug 11 '09 at 16:44

Kent Boogaart

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We both enjoy writing 3 things, including Hello. – user7116 Aug 11 '09 at 16:45
Thank you for this, it's exactly what I was looking for :). However, how can I get back to a byte array after using the binary writer? – Lazlo Aug 11 '09 at 17:00
If the binary writer is wrapped around a `MemoryStream`, you can call `ToArray` on it and get a byte array. – John Calsbeek Aug 11 '09 at 17:04
I feel completely stupid asking another question, but, how do I wrap it around a MemoryStream? – Lazlo Aug 11 '09 at 17:17
Lazlo, you can see my answer for how you "wrap it around a memory stream" (I don't feel its my place to edit Kent's). – user7116 Aug 11 '09 at 18:10

John Calsbeek · Answer 3 · 2009-08-11T16:47:45.953

0

You'll be wanting to use the BitConverter class. The main difference is that these methods return an array of bytes instead of altering an existing array.

(This is a replacement for the specific methods mentioned; for a replacement of the entire ByteBuffer class, see the other replies.)

edited Aug 11 '09 at 16:47

answered Aug 11 '09 at 16:41

John Calsbeek

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Equivalent of Java's "ByteBuffer.putType()" in C#

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