Hi,

how to typecast or convert a byte[] to a string and the way arount ?
I have string from a textbox and wants to transmit it trough a socket. witch
accepts a byte[]. Now I make a copy from the string first, but I'm sure there
is some other way. For receiving I have to display the received string into
a textbox. same question ?

--
rgds, Wilfried
http://www.mestdagh.biz

> how to typecast or convert a byte[] to a string and the way arount ?
> I have string from a textbox and wants to transmit it trough a socket.
witch
> accepts a byte[]. Now I make a copy from the string first, but I'm sure
there
> is some other way. For receiving I have to display the received string
into
> a textbox. same question ?


Check out this class: "BitConverter"




--
(E-Mail Removed)
http://www.programeri.org
http://forum.programeri.org

Hi,

string s = System.Text.Encoding.UTF8.GetString(bytes);
byte[] bytes = System.Text.Encoding.UTF8.GetBytes(s);


> Hi,
>
> how to typecast or convert a byte[] to a string and the way arount ?
> I have string from a textbox and wants to transmit it trough a socket. witch
> accepts a byte[]. Now I make a copy from the string first, but I'm sure there
> is some other way. For receiving I have to display the received string into
> a textbox. same question ?
>

Wilfried,

Normally is this the class for what you ask.
http://msdn.microsoft.com/library/de...classtopic.asp

I hope this helps,

Cor

Hi,

thank it is workinbut followig proble ifr receiving data:

private void DoDataAvailable(byte[] buffer, int offset, int count)

how to convert this to string ? offset is offset begin of string, and count
is amountof data.

Wilfried Mestdagh <(E-Mail Removed)> wrote:
> thank it is workinbut followig proble ifr receiving data:
>
> private void DoDataAvailable(byte[] buffer, int offset, int count)
>
> how to convert this to string ? offset is offset begin of string, and count
> is amountof data.

Denny already showed you the code - use Encoding.GetString.

--
Jon Skeet - <(E-Mail Removed)>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

Hi Jon,

Sorr I was not clear in this question. I have a pointer to a buffer with
offset in ti where data start, and count of data. To convert to string now I
need to make a double copy whitch should not be. I show because it will
explain better:

private void DoDataAvailable(byte[] buffer, int offset, int count)
{
count -= 2; // remove \r\n
byte[] tmp = new byte[count];
while (--count >= 0)
tmp[count] = buffer[offset + count];
string rx = Encoding.UTF8.GetString(tmp);

I wanted to avoid the extra copy of the data in tmp here.

thx, Wilfried

Wilfried Mestdagh <(E-Mail Removed)> wrote:
> Sorr I was not clear in this question. I have a pointer to a buffer with
> offset in ti where data start, and count of data. To convert to string now I
> need to make a double copy whitch should not be. I show because it will
> explain better:
>
> private void DoDataAvailable(byte[] buffer, int offset, int count)
> {
> count -= 2; // remove \r\n
> byte[] tmp = new byte[count];
> while (--count >= 0)
> tmp[count] = buffer[offset + count];
> string rx = Encoding.UTF8.GetString(tmp);
>
> I wanted to avoid the extra copy of the data in tmp here.

Use the overload of Encoding.GetString which takes a start index and a
count.

--
Jon Skeet - <(E-Mail Removed)>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too