How do I convert a string array to a byte array using Array ConvertAll?

Question

I can convert string[] to byte[] like in the following code:

 byte[] k = {255, 150, 155, 255, 255, 255, 255, 255, 255, 255, 55, 55, 15, 55, 155, 55};
 string st = BitConverter.ToString(Array.ConvertAll(k, Convert.ToByte));     
 byte[] kk = new byte[16];
 string[] sts = st.Split('-');            
 for (int i = 0; i < 16; i++)
 {
    kk[i] = Convert.ToByte(sts[i], 16);
 }

But I can't do the same with LINQ like in the code below:

Array.ConvertAll(sts,item=>(byte) Convert.ToByte(item, 16))

How do I make this work in LINQ?

Why is it not working in the "Immediate Window" of Visual Studio?

Lambda expressions do not work in "Immediate" and "Watch" windows.

score 0 · Accepted Answer · edited Jul 01 '16 at 10:12

0

Your code does work. Maybe you forgot a semicolon:

 var a = Array.ConvertAll(sts, s => Convert.ToByte(s, 16));

edited Jul 01 '16 at 10:12

Peter Mortensen

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answered May 27 '16 at 10:20

Nikolay Fedorov

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Thanks.. that worked. But why it throws error in the Immediate window (during debug)? – IshiRaj Inam May 27 '16 at 10:28
I don't understand your question. I don't catch up any exception or error. – Nikolay Fedorov May 27 '16 at 10:31
When I try the same code (while debugging) in the "Immediate Window" of Visual Studio 2015 System.NotSupportedException error is thrown. – IshiRaj Inam May 27 '16 at 10:39
Have you got description: Expression cannot contain lambda expressions? Window - Watch has the same "problem". – Nikolay Fedorov May 27 '16 at 10:58

score 0 · Answer 2 · edited Jul 01 '16 at 10:13

0

Here is the elegant solution to convert from a byte array (or double array) to a string and from string to byte/double array. :)

double[] k = {255, 150, 155, 25, 2, 55, 66};
string st = BitConverter.ToString( Array.ConvertAll(k, Convert.ToByte));

And from string to double array...

double[] kk = Array.ConvertAll(st.Split('-'), s => (double) Convert.ToByte(s, 16));

edited Jul 01 '16 at 10:13

Peter Mortensen

30,738
21
105
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answered May 27 '16 at 11:11

IshiRaj Inam

15
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How do I convert a string array to a byte array using Array ConvertAll?

2 Answers2