I have a List that I'm adding 3 bytes to one of which is the length of a string that I'm dynamically passing to my method. How can I determine the length of that string and convert the int into a value that would be accepted in my list.add() method.
Code below:
string myString = "This is a sample string...I need its length";
int theLength = myString.Length;
List<byte> lb = new List<byte>();
lb.Add(0x81);
lb.Add(theLength); // this doesn't work
lb.Add(0x04);
TIA
Try this:
lb.AddRange(BitConverter.GetBytes(theLength))
Of course, you may decide you only need the least significant bit, in which case you could do a simple cast, or index into the result of GetBytes(), which will be 4 bytes long in this case.
More on BitConverter: http://msdn.microsoft.com/en-us/library/system.bitconverter.getbytes.aspx
Provided the string's length is within the byte range:
lb.Add((byte)theLength);
You have to cast your length into a byte:
lb.Add((byte)theLength);
But as you might guess, your length won't always fit into a single byte. Be more specific about what you expect to do with your list of bytes, we might could provide a better answer (such as using BinaryReader/BinaryWriter instead of a list of bytes).
