Byte building

**Nicholas Paldino [.NET/C# MVP]** · Nov 17 '05, 04:43 AM

Re: Byte building

Gianmaria,

You will want to call the CopyTo method, passing in a byte array with
one element, like so:

// The byte array of one element.
byte[] bytes = new byte[1];

// Call the CopyTo method.
bits.CopyTo(byt es, 0);

Hope this helps.

--
- Nicholas Paldino [.NET/C# MVP]
- mvp@spam.guard. caspershouse.co m

"Gianmaria I." <nowaytoknow@ho thot.it> wrote in message
news:eZmzfxocFH A.3564@tk2msftn gp13.phx.gbl...[color=blue]
> Hi,
> having a BitArray, how can i extract bits to create a System.byte
>
> as in the example...
>
> With
> BitArray bits
> and
> Byte myNewByte
>
> bits[0] to bits[7] => myNewByte
>
>
>[/color]

**Nathan Kovac** · Nov 17 '05, 04:43 AM

Re: Byte building

It has been since beta since I did any of this, but here is some old source
code that might help you out. Someone on this same forum had helped me
about 4 years ago with a similar problem when I was working out a protocal
for an online game. If you look at what I am doing there are a couple
choices that might help you accomplish what you need. Pay special attention
to how I calculate the data length from the first 4 bytes of my packet, this
will probably be your most efficient method of doing what you want. Here is
my code.

using System;

using System.Runtime. Serialization.F ormatters.Binar y;

using System.IO;

using System.Diagnost ics;

namespace MudClient

{

/// <summary>

/// Summary description for Packet.

/// </summary>

///

public enum PacketType:byte

{

IgnoreThisPacke t,

BroadcastToServ er,

LoginToServer,

LoginAccepted,

LoginDenied,

LoginReqestfrom Server,

QuitToServer,

QuitToClient,

ServerShuttingD own,

SetCommandLineT oClient,

CommandToServer ,

CommandToClient ,

TextToClient,

PingClient,

PongServer,

AbbrTextToClien t,

RequestAbbrText Value,

SendAbbrTextVal ue,

ClearAbbrTextOn Client

}

public class Packet

{

private byte command;

private int dataLength=0;

private byte[] Data;

public byte[] PacketData

{

get

{

return Data;

}

set

{

Data=value;

dataLength=Data .Length;

}

}

public int Length

{

get

{

if (Data==null)

return 5;

else

return dataLength+5;

}

}

public PacketType Command

{

get

{

return (PacketType)com mand;

}

set

{

command=(byte)v alue;

}

}

public string StrPacketData

{

get {return System.Text.Enc oding.ASCII.Get String(Data);}

set

{

Data=System.Tex t.Encoding.ASCI I.GetBytes(valu e.ToCharArray() );

dataLength=Data .Length;

}

}

public Packet()

{

Command=PacketT ype.IgnoreThisP acket;

}

public Packet(PacketTy pe cmd)

{

Command=cmd;

}

public Packet(byte[] thisdata)

{

if (thisdata.Lengt h>0)

command=thisdat a[0];

if (thisdata.Lengt h>5)

{

dataLength =

(((int)thisdata[4]) << 24) +

(((int)thisdata[3]) << 16) +

(((int)thisdata[2]) << 8) +

((int)thisdata[1]);

if (dataLength>0)

{

Data=new Byte[dataLength];

Array.Copy(this data,5,Data,0,d ataLength);

}

}

}

public Packet(PacketTy pe cmd, byte[] thisdata)

{

Command=cmd;

Data=thisdata;

dataLength=Data .Length;

}

public Packet(PacketTy pe cmd, string thisdata)

{

Command=cmd;

Data=System.Tex t.Encoding.ASCI I.GetBytes(this data.ToCharArra y());

dataLength=Data .Length;

Debug.WriteLine ("setting dataLength to "+dataLengt h);

}

public byte[] Serialize()

{

int len=this.Length ;

byte[] tempcmd=new byte[len];

tempcmd[0] = command;

tempcmd[1] = (byte)(dataLeng th & 0xff);

tempcmd[2] = (byte)((dataLen gth >> 8) & 0xff);

tempcmd[3] = (byte)((dataLen gth >>16) & 0xff);

tempcmd[4] = (byte)((dataLen gth >>24) & 0xff);

if (len>5)

{

Array.Copy(Data ,0,tempcmd,5,da taLength);

}

return tempcmd;

}

}

}

"Gianmaria I." <nowaytoknow@ho thot.it> wrote in message
news:eZmzfxocFH A.3564@tk2msftn gp13.phx.gbl...[color=blue]
> Hi,
> having a BitArray, how can i extract bits to create a System.byte
>
> as in the example...
>
> With
> BitArray bits
> and
> Byte myNewByte
>
> bits[0] to bits[7] => myNewByte
>
>
>[/color]

**Nicholas Paldino [.NET/C# MVP]** · Nov 17 '05, 04:43 AM

Re: Byte building

Or, you could use the CopyTo method on the BitArray class. =)

--
- Nicholas Paldino [.NET/C# MVP]
- mvp@spam.guard. caspershouse.co m

"Nathan Kovac" <nate@tctelco.n et> wrote in message
news:uNp2tCpcFH A.720@TK2MSFTNG P15.phx.gbl...[color=blue]
> It has been since beta since I did any of this, but here is some old
> source code that might help you out. Someone on this same forum had
> helped me about 4 years ago with a similar problem when I was working out
> a protocal for an online game. If you look at what I am doing there are a
> couple choices that might help you accomplish what you need. Pay special
> attention to how I calculate the data length from the first 4 bytes of my
> packet, this will probably be your most efficient method of doing what you
> want. Here is my code.
>
> using System;
>
> using System.Runtime. Serialization.F ormatters.Binar y;
>
> using System.IO;
>
> using System.Diagnost ics;
>
> namespace MudClient
>
> {
>
> /// <summary>
>
> /// Summary description for Packet.
>
> /// </summary>
>
> ///
>
> public enum PacketType:byte
>
> {
>
> IgnoreThisPacke t,
>
> BroadcastToServ er,
>
> LoginToServer,
>
> LoginAccepted,
>
> LoginDenied,
>
> LoginReqestfrom Server,
>
> QuitToServer,
>
> QuitToClient,
>
> ServerShuttingD own,
>
> SetCommandLineT oClient,
>
> CommandToServer ,
>
> CommandToClient ,
>
> TextToClient,
>
> PingClient,
>
> PongServer,
>
> AbbrTextToClien t,
>
> RequestAbbrText Value,
>
> SendAbbrTextVal ue,
>
> ClearAbbrTextOn Client
>
> }
>
> public class Packet
>
> {
>
> private byte command;
>
> private int dataLength=0;
>
> private byte[] Data;
>
> public byte[] PacketData
>
> {
>
> get
>
> {
>
> return Data;
>
> }
>
> set
>
> {
>
> Data=value;
>
> dataLength=Data .Length;
>
> }
>
> }
>
> public int Length
>
> {
>
> get
>
> {
>
> if (Data==null)
>
> return 5;
>
> else
>
> return dataLength+5;
>
> }
>
> }
>
> public PacketType Command
>
> {
>
> get
>
> {
>
> return (PacketType)com mand;
>
> }
>
> set
>
> {
>
> command=(byte)v alue;
>
> }
>
> }
>
> public string StrPacketData
>
> {
>
> get {return System.Text.Enc oding.ASCII.Get String(Data);}
>
> set
>
> {
>
> Data=System.Tex t.Encoding.ASCI I.GetBytes(valu e.ToCharArray() );
>
> dataLength=Data .Length;
>
> }
>
> }
>
> public Packet()
>
> {
>
> Command=PacketT ype.IgnoreThisP acket;
>
> }
>
> public Packet(PacketTy pe cmd)
>
> {
>
> Command=cmd;
>
> }
>
> public Packet(byte[] thisdata)
>
> {
>
> if (thisdata.Lengt h>0)
>
> command=thisdat a[0];
>
> if (thisdata.Lengt h>5)
>
> {
>
> dataLength =
>
> (((int)thisdata[4]) << 24) +
>
> (((int)thisdata[3]) << 16) +
>
> (((int)thisdata[2]) << 8) +
>
> ((int)thisdata[1]);
>
> if (dataLength>0)
>
> {
>
> Data=new Byte[dataLength];
>
> Array.Copy(this data,5,Data,0,d ataLength);
>
> }
>
> }
>
> }
>
> public Packet(PacketTy pe cmd, byte[] thisdata)
>
> {
>
> Command=cmd;
>
> Data=thisdata;
>
> dataLength=Data .Length;
>
> }
>
> public Packet(PacketTy pe cmd, string thisdata)
>
> {
>
> Command=cmd;
>
> Data=System.Tex t.Encoding.ASCI I.GetBytes(this data.ToCharArra y());
>
> dataLength=Data .Length;
>
> Debug.WriteLine ("setting dataLength to "+dataLengt h);
>
> }
>
> public byte[] Serialize()
>
> {
>
> int len=this.Length ;
>
> byte[] tempcmd=new byte[len];
>
> tempcmd[0] = command;
>
> tempcmd[1] = (byte)(dataLeng th & 0xff);
>
> tempcmd[2] = (byte)((dataLen gth >> 8) & 0xff);
>
> tempcmd[3] = (byte)((dataLen gth >>16) & 0xff);
>
> tempcmd[4] = (byte)((dataLen gth >>24) & 0xff);
>
>
> if (len>5)
>
> {
>
> Array.Copy(Data ,0,tempcmd,5,da taLength);
>
> }
>
> return tempcmd;
>
> }
>
> }
>
> }
>
>
> "Gianmaria I." <nowaytoknow@ho thot.it> wrote in message
> news:eZmzfxocFH A.3564@tk2msftn gp13.phx.gbl...[color=green]
>> Hi,
>> having a BitArray, how can i extract bits to create a System.byte
>>
>> as in the example...
>>
>> With
>> BitArray bits
>> and
>> Byte myNewByte
>>
>> bits[0] to bits[7] => myNewByte
>>
>>
>>[/color]
>
>[/color]

**Nathan Kovac** · Nov 17 '05, 04:43 AM

Re: Byte building

Thanks, I learned something from this too.

"Nicholas Paldino [.NET/C# MVP]" <mvp@spam.guard .caspershouse.c om> wrote in
message news:ujfRhFpcFH A.3880@tk2msftn gp13.phx.gbl...[color=blue]
> Or, you could use the CopyTo method on the BitArray class. =)
>
>
> --
> - Nicholas Paldino [.NET/C# MVP]
> - mvp@spam.guard. caspershouse.co m
>
> "Nathan Kovac" <nate@tctelco.n et> wrote in message
> news:uNp2tCpcFH A.720@TK2MSFTNG P15.phx.gbl...[color=green]
>> It has been since beta since I did any of this, but here is some old
>> source code that might help you out. Someone on this same forum had
>> helped me about 4 years ago with a similar problem when I was working out
>> a protocal for an online game. If you look at what I am doing there are
>> a couple choices that might help you accomplish what you need. Pay
>> special attention to how I calculate the data length from the first 4
>> bytes of my packet, this will probably be your most efficient method of
>> doing what you want. Here is my code.
>>
>> using System;
>>
>> using System.Runtime. Serialization.F ormatters.Binar y;
>>
>> using System.IO;
>>
>> using System.Diagnost ics;
>>
>> namespace MudClient
>>
>> {
>>
>> /// <summary>
>>
>> /// Summary description for Packet.
>>
>> /// </summary>
>>
>> ///
>>
>> public enum PacketType:byte
>>
>> {
>>
>> IgnoreThisPacke t,
>>
>> BroadcastToServ er,
>>
>> LoginToServer,
>>
>> LoginAccepted,
>>
>> LoginDenied,
>>
>> LoginReqestfrom Server,
>>
>> QuitToServer,
>>
>> QuitToClient,
>>
>> ServerShuttingD own,
>>
>> SetCommandLineT oClient,
>>
>> CommandToServer ,
>>
>> CommandToClient ,
>>
>> TextToClient,
>>
>> PingClient,
>>
>> PongServer,
>>
>> AbbrTextToClien t,
>>
>> RequestAbbrText Value,
>>
>> SendAbbrTextVal ue,
>>
>> ClearAbbrTextOn Client
>>
>> }
>>
>> public class Packet
>>
>> {
>>
>> private byte command;
>>
>> private int dataLength=0;
>>
>> private byte[] Data;
>>
>> public byte[] PacketData
>>
>> {
>>
>> get
>>
>> {
>>
>> return Data;
>>
>> }
>>
>> set
>>
>> {
>>
>> Data=value;
>>
>> dataLength=Data .Length;
>>
>> }
>>
>> }
>>
>> public int Length
>>
>> {
>>
>> get
>>
>> {
>>
>> if (Data==null)
>>
>> return 5;
>>
>> else
>>
>> return dataLength+5;
>>
>> }
>>
>> }
>>
>> public PacketType Command
>>
>> {
>>
>> get
>>
>> {
>>
>> return (PacketType)com mand;
>>
>> }
>>
>> set
>>
>> {
>>
>> command=(byte)v alue;
>>
>> }
>>
>> }
>>
>> public string StrPacketData
>>
>> {
>>
>> get {return System.Text.Enc oding.ASCII.Get String(Data);}
>>
>> set
>>
>> {
>>
>> Data=System.Tex t.Encoding.ASCI I.GetBytes(valu e.ToCharArray() );
>>
>> dataLength=Data .Length;
>>
>> }
>>
>> }
>>
>> public Packet()
>>
>> {
>>
>> Command=PacketT ype.IgnoreThisP acket;
>>
>> }
>>
>> public Packet(PacketTy pe cmd)
>>
>> {
>>
>> Command=cmd;
>>
>> }
>>
>> public Packet(byte[] thisdata)
>>
>> {
>>
>> if (thisdata.Lengt h>0)
>>
>> command=thisdat a[0];
>>
>> if (thisdata.Lengt h>5)
>>
>> {
>>
>> dataLength =
>>
>> (((int)thisdata[4]) << 24) +
>>
>> (((int)thisdata[3]) << 16) +
>>
>> (((int)thisdata[2]) << 8) +
>>
>> ((int)thisdata[1]);
>>
>> if (dataLength>0)
>>
>> {
>>
>> Data=new Byte[dataLength];
>>
>> Array.Copy(this data,5,Data,0,d ataLength);
>>
>> }
>>
>> }
>>
>> }
>>
>> public Packet(PacketTy pe cmd, byte[] thisdata)
>>
>> {
>>
>> Command=cmd;
>>
>> Data=thisdata;
>>
>> dataLength=Data .Length;
>>
>> }
>>
>> public Packet(PacketTy pe cmd, string thisdata)
>>
>> {
>>
>> Command=cmd;
>>
>> Data=System.Tex t.Encoding.ASCI I.GetBytes(this data.ToCharArra y());
>>
>> dataLength=Data .Length;
>>
>> Debug.WriteLine ("setting dataLength to "+dataLengt h);
>>
>> }
>>
>> public byte[] Serialize()
>>
>> {
>>
>> int len=this.Length ;
>>
>> byte[] tempcmd=new byte[len];
>>
>> tempcmd[0] = command;
>>
>> tempcmd[1] = (byte)(dataLeng th & 0xff);
>>
>> tempcmd[2] = (byte)((dataLen gth >> 8) & 0xff);
>>
>> tempcmd[3] = (byte)((dataLen gth >>16) & 0xff);
>>
>> tempcmd[4] = (byte)((dataLen gth >>24) & 0xff);
>>
>>
>> if (len>5)
>>
>> {
>>
>> Array.Copy(Data ,0,tempcmd,5,da taLength);
>>
>> }
>>
>> return tempcmd;
>>
>> }
>>
>> }
>>
>> }
>>
>>
>> "Gianmaria I." <nowaytoknow@ho thot.it> wrote in message
>> news:eZmzfxocFH A.3564@tk2msftn gp13.phx.gbl...[color=darkred]
>>> Hi,
>>> having a BitArray, how can i extract bits to create a System.byte
>>>
>>> as in the example...
>>>
>>> With
>>> BitArray bits
>>> and
>>> Byte myNewByte
>>>
>>> bits[0] to bits[7] => myNewByte
>>>
>>>
>>>[/color]
>>
>>[/color]
>
>[/color]

**Gianmaria I.** · Nov 17 '05, 04:45 AM

Re: Byte building

Thank you too, u really kind.
"Nathan Kovac" <nate@tctelco.n et> ha scritto nel messaggio
news:eEuTTJpcFH A.3712@TK2MSFTN GP12.phx.gbl...[color=blue]
> Thanks, I learned something from this too.
>
> "Nicholas Paldino [.NET/C# MVP]" <mvp@spam.guard .caspershouse.c om> wrote
> in message news:ujfRhFpcFH A.3880@tk2msftn gp13.phx.gbl...[color=green]
>> Or, you could use the CopyTo method on the BitArray class. =)
>>
>>
>> --
>> - Nicholas Paldino [.NET/C# MVP]
>> - mvp@spam.guard. caspershouse.co m
>>
>> "Nathan Kovac" <nate@tctelco.n et> wrote in message
>> news:uNp2tCpcFH A.720@TK2MSFTNG P15.phx.gbl...[color=darkred]
>>> It has been since beta since I did any of this, but here is some old
>>> source code that might help you out. Someone on this same forum had
>>> helped me about 4 years ago with a similar problem when I was working
>>> out a protocal for an online game. If you look at what I am doing there
>>> are a couple choices that might help you accomplish what you need. Pay
>>> special attention to how I calculate the data length from the first 4
>>> bytes of my packet, this will probably be your most efficient method of
>>> doing what you want. Here is my code.
>>>
>>> using System;
>>>
>>> using System.Runtime. Serialization.F ormatters.Binar y;
>>>
>>> using System.IO;
>>>
>>> using System.Diagnost ics;
>>>
>>> namespace MudClient
>>>
>>> {
>>>
>>> /// <summary>
>>>
>>> /// Summary description for Packet.
>>>
>>> /// </summary>
>>>
>>> ///
>>>
>>> public enum PacketType:byte
>>>
>>> {
>>>
>>> IgnoreThisPacke t,
>>>
>>> BroadcastToServ er,
>>>
>>> LoginToServer,
>>>
>>> LoginAccepted,
>>>
>>> LoginDenied,
>>>
>>> LoginReqestfrom Server,
>>>
>>> QuitToServer,
>>>
>>> QuitToClient,
>>>
>>> ServerShuttingD own,
>>>
>>> SetCommandLineT oClient,
>>>
>>> CommandToServer ,
>>>
>>> CommandToClient ,
>>>
>>> TextToClient,
>>>
>>> PingClient,
>>>
>>> PongServer,
>>>
>>> AbbrTextToClien t,
>>>
>>> RequestAbbrText Value,
>>>
>>> SendAbbrTextVal ue,
>>>
>>> ClearAbbrTextOn Client
>>>
>>> }
>>>
>>> public class Packet
>>>
>>> {
>>>
>>> private byte command;
>>>
>>> private int dataLength=0;
>>>
>>> private byte[] Data;
>>>
>>> public byte[] PacketData
>>>
>>> {
>>>
>>> get
>>>
>>> {
>>>
>>> return Data;
>>>
>>> }
>>>
>>> set
>>>
>>> {
>>>
>>> Data=value;
>>>
>>> dataLength=Data .Length;
>>>
>>> }
>>>
>>> }
>>>
>>> public int Length
>>>
>>> {
>>>
>>> get
>>>
>>> {
>>>
>>> if (Data==null)
>>>
>>> return 5;
>>>
>>> else
>>>
>>> return dataLength+5;
>>>
>>> }
>>>
>>> }
>>>
>>> public PacketType Command
>>>
>>> {
>>>
>>> get
>>>
>>> {
>>>
>>> return (PacketType)com mand;
>>>
>>> }
>>>
>>> set
>>>
>>> {
>>>
>>> command=(byte)v alue;
>>>
>>> }
>>>
>>> }
>>>
>>> public string StrPacketData
>>>
>>> {
>>>
>>> get {return System.Text.Enc oding.ASCII.Get String(Data);}
>>>
>>> set
>>>
>>> {
>>>
>>> Data=System.Tex t.Encoding.ASCI I.GetBytes(valu e.ToCharArray() );
>>>
>>> dataLength=Data .Length;
>>>
>>> }
>>>
>>> }
>>>
>>> public Packet()
>>>
>>> {
>>>
>>> Command=PacketT ype.IgnoreThisP acket;
>>>
>>> }
>>>
>>> public Packet(PacketTy pe cmd)
>>>
>>> {
>>>
>>> Command=cmd;
>>>
>>> }
>>>
>>> public Packet(byte[] thisdata)
>>>
>>> {
>>>
>>> if (thisdata.Lengt h>0)
>>>
>>> command=thisdat a[0];
>>>
>>> if (thisdata.Lengt h>5)
>>>
>>> {
>>>
>>> dataLength =
>>>
>>> (((int)thisdata[4]) << 24) +
>>>
>>> (((int)thisdata[3]) << 16) +
>>>
>>> (((int)thisdata[2]) << 8) +
>>>
>>> ((int)thisdata[1]);
>>>
>>> if (dataLength>0)
>>>
>>> {
>>>
>>> Data=new Byte[dataLength];
>>>
>>> Array.Copy(this data,5,Data,0,d ataLength);
>>>
>>> }
>>>
>>> }
>>>
>>> }
>>>
>>> public Packet(PacketTy pe cmd, byte[] thisdata)
>>>
>>> {
>>>
>>> Command=cmd;
>>>
>>> Data=thisdata;
>>>
>>> dataLength=Data .Length;
>>>
>>> }
>>>
>>> public Packet(PacketTy pe cmd, string thisdata)
>>>
>>> {
>>>
>>> Command=cmd;
>>>
>>> Data=System.Tex t.Encoding.ASCI I.GetBytes(this data.ToCharArra y());
>>>
>>> dataLength=Data .Length;
>>>
>>> Debug.WriteLine ("setting dataLength to "+dataLengt h);
>>>
>>> }
>>>
>>> public byte[] Serialize()
>>>
>>> {
>>>
>>> int len=this.Length ;
>>>
>>> byte[] tempcmd=new byte[len];
>>>
>>> tempcmd[0] = command;
>>>
>>> tempcmd[1] = (byte)(dataLeng th & 0xff);
>>>
>>> tempcmd[2] = (byte)((dataLen gth >> 8) & 0xff);
>>>
>>> tempcmd[3] = (byte)((dataLen gth >>16) & 0xff);
>>>
>>> tempcmd[4] = (byte)((dataLen gth >>24) & 0xff);
>>>
>>>
>>> if (len>5)
>>>
>>> {
>>>
>>> Array.Copy(Data ,0,tempcmd,5,da taLength);
>>>
>>> }
>>>
>>> return tempcmd;
>>>
>>> }
>>>
>>> }
>>>
>>> }
>>>
>>>
>>> "Gianmaria I." <nowaytoknow@ho thot.it> wrote in message
>>> news:eZmzfxocFH A.3564@tk2msftn gp13.phx.gbl...
>>>> Hi,
>>>> having a BitArray, how can i extract bits to create a System.byte
>>>>
>>>> as in the example...
>>>>
>>>> With
>>>> BitArray bits
>>>> and
>>>> Byte myNewByte
>>>>
>>>> bits[0] to bits[7] => myNewByte
>>>>
>>>>
>>>>
>>>
>>>[/color]
>>
>>[/color]
>
>[/color]

Byte building

Byte building

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