convert int[] argb to byte[] argb

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C#

how i can convert int[] argb to byte[] argb ?

Posted 24-Sep-12 0:50am

Hala1990

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sjelen · Answer 1 · 2012-09-24T00:55:00

Solution 1

You can use:

C#

byte[] BitConverter.GetBytes(int)

Using LINQ extensions:

C#

int[] input;
byte[] output = input.SelectMany(i => BitConverter.GetBytes(i)).ToArray();

Posted 24-Sep-12 0:55am

sjelen

Updated 24-Sep-12 2:08am

v3

Comments

Hala1990 24-Sep-12 6:59am

but this int is array or not ?

sjelen 24-Sep-12 8:01am

It's a single int.
Just put it in a loop...
Or combine it with Solution 2
Or take a look at updated solution.

CodeHawkz · Answer 2 · 2012-09-24T01:15:00

Hey there,

Have you been at least Googling to see the size of an integer in C#? An integer is a signed 32-bit value. In other words, 1 int = 4 bytes.

C#

int[] data = {123, 321423,3950024, 2385704, 9759023,48634, 987653,6456895,46985589};
byte[] result = Array.ConvertAll(data, intValue => Convert.ToByte(intValue));

Of course, you can tweak this line of code if you are using C#3.5 or above.

But one important thing to note is that, Convert.ToByte method converts a 32-bit integer to an 8-bit integer, and I hope I don't need to point out what that would result.

Hope this helps, regards