Converting Boolean array into byte

Question

4.00/5 (1 vote)

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Hi all!

As beginner programmer Im not familiar with .NET methods to convert types to another so I kindly ask help with following problem.

I have empedded device which recieves messages as 8 bytes long byte array. One of its bytes represents output states. I have made .NET class and UI to control those states. Only problem is that cant cast my bool array into Byte..

Here is an example:

bool[] StatesArray = { false, true, true, false, false, false, false , false}; // States comes from MyClass properties changed by Ui component (eg. CheckBox)

//target device will read states as binary form eg. above state array: 01100000

byte[] Message = new byte[8]; //Byte array which will be The Message to be send (one index includes our states as Byte)

byte States; // byte which represents states 

//States = ???? // Problem! Convert StatesArray to one byte

//Message[4] = States; //Add our states into our message

//Send the message etc..

Hope you got idea :)

Cheers!

Posted 21-Jun-11 22:41pm

paleGegg0

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6 solutions

Solution 3

Rather than using an array of bools, have you considered an enum:

public enum StatusByte : byte
    {
    Ready = 0,
    Abort = 1,
    TxReady = 2,
    RxReady = 3,
    TxError = 4,
    RxError = 5,
    }
private void button1_Click(object sender, EventArgs e)
    {
    StatusByte sb = ReadStatus();
    if ((int) (sb & StatusByte.Ready) == 1)
        {
        }
    }

Posted 21-Jun-11 22:55pm

OriginalGriff

Comments

Sergey Alexandrovich Kryukov 22-Jun-11 14:05pm

Correct, byte[] makes little to no sense, my 5.
Right approach it in the answer by Prerak also.
--SA

Solution 6

bool[] StatesArray = { false, true, true, false, false, false, false , false}; 
BitArray bits = new BitArray(StatesArray);
byte[] Bytes = new byte[1];
bits.CopyTo(Bytes, 0);
//Bytes[0] is your answer

Posted 21-Jun-11 22:59pm

Prerak Patel

Comments

Sergey Alexandrovich Kryukov 22-Jun-11 14:02pm

Finally I see a correct solution! It should be bit array, not byte array, how it can be not clear? My 5.
--SA

Solution 1

Use Array.ConvertAll(Of TInput, TOutput)[^] method to acquire Message.

Then use this to join the bytes

C#

for(int i = 0;i<Message.Length-1;i++)states|=Message[i]<<i;

Posted 21-Jun-11 22:50pm

Firo Atrum Ventus

Updated 21-Jun-11 23:37pm

v7

Comments

Sergey Alexandrovich Kryukov 22-Jun-11 14:06pm

This is because OP question is wrong of course. byte[] makes little to no sense. Right approach it in the answer by Prerak this time.
--SA

Solution 4

I think these line of code will help you.

C#

bool[] a = new bool[] { true, false, true, true, false, true };
byte[] b = (from x in a select x ? (byte)0x1 : (byte)0x0).ToArray();

Posted 21-Jun-11 22:56pm

2irfanshaikh

Comments

Sergey Alexandrovich Kryukov 22-Jun-11 14:04pm

This is because OP question is wrong of course. byte[] makes little to no sense. Right approach it in the answer by Prerak this time.
--SA

Solution 5

You could use LINQ

byte[] array = (from y in a select y ? (byte)0x1 : (byte)0x0).ToArray();

Posted 21-Jun-11 22:57pm

Abhinav S

Updated 21-Jun-11 22:58pm

v2

Comments

CPallini 22-Jun-11 5:12am

I suppose the expected output is one byte not a byte array.

Sergey Alexandrovich Kryukov 22-Jun-11 14:03pm

This is because OP question is wrong of course. byte[] makes little to no sense. Right approach it in the answer by Prerak this time.
--SA

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CPallini · Accepted Answer · 2011-06-21T22:54:00

Solution 2

For instance:

C#

byte encodebool(bool[] arr)
{
  byte val = 0;
  foreach (bool b in arr)
  {
    val <<= 1;
    if (b) val |= 1;
  }
  return val;
 }

Posted 21-Jun-11 22:54pm

CPallini

Comments

paleGegg0 22-Jun-11 5:12am

Thanks so much, helped a lot :)!