how can i build byte array with int values?

[ccpro]

4ex in C it would be like
char *str = sprintf("%c_some_string_%c", 0x2, 0x3);

how can i do the same in C# for sending byte array through socket?

tnx a lot

 

[chiph]

Sockets in .NET uses the NetworkStream class. This class has methods for reading and writing bytes, and byte arrays.

TcpClient client = new TcpClient("somehost.com", portNum);
NetworkStream ns = client.GetStream();
// Write a single byte
ns.WriteByte(0x20);

// Write an ASCII string
byte[] MyBytes = Encoding.ASCII.GetBytes("blahblahblah");
ns.Write(MyBytes, 0, MyBytes.Length);

// Write a Unicode UTF-8 string
MyBytes = Encoding.UTF8.GetBytes("moreblahblahblah");
ns.Write(MyBytes, 0, MyBytes.Length);

// Read a byte
int NumBytesRead = ns.ReadByte();
If (NumBytesRead == -1) {
   return;  // at end of stream
}

// Read an ASCII string
MyBytes = new Byte[8192];  // create buffer
NumBytesRead = ns.Read(MyBytes, 0, MyBytes.Length);
If (NumBytesRead == -1) {
   return;  // at end of stream
}
Console.WriteLine(Encoding.ASCII.GetString(MyBytes, 0, MyBytes.Length);

// Read a Unicode UTF8 string
MyBytes = new Byte[8192];  // create buffer
NumBytesRead = ns.Read(MyBytes, 0, MyBytes.Length);
If (NumBytesRead == -1) {
   return;  // at end of stream
}
Console.WriteLine(Encoding.UTF8.GetString(MyBytes, 0, MyBytes.Length);

client.Close();

 

[ccpro]

the question wasn't about TcpClient,
the q is:
how to build byte array with int values?

tnx a lot

 

[azarc]

Not really sure if you are trying to build the byte array from int values or from a string, your original post looks like you are trying to do it from a string.

If you want to do it from int values then,
byte[] buffer = {0x1, 0x2, 0x3};

If you want to build a byte array from a string,
using System.Text;
byte[] buffer = Encoding.ASCII.GetBytes("Hello, World"

From char values,
using System.Text;
char[] charArray = {'h', 'e', 'l'};
byte[] buffer = Encoding.ASCII.GetBytes(charArray);
string myStr = Encoding.ASCII.GetString(buffer);

Aaron