Wrong in convert four byte to integer then display in textbox

Question

I use array of byte and I need to convert this 4 byte to integer and display result in textbox ,the result must 320 but it display 64

byte[] bb = new byte[4] { 64, 1, 0, 0 }; 
textBox1.Text = Convert.ToInt32(bb[0]).ToString(); // display result 64 it must 320

what is wrong??

I don't know why in the world you think it should be 320 even if it worked the way you're imagining. But you still only passed 1 byte to the method, with the value 64. How would it be anything else? — Chris Hayes, Dec 27 '13 at 08:08
_I need to convert this 4 byte to integer_ But you are taking just first one.. — Soner Gönül, Dec 27 '13 at 08:12
it must give me width of image 320 not 64 is there other method for convert,can you give me other method for convert four byte to integer — user2922938, Dec 27 '13 at 08:12

Ganesh R. · Accepted Answer · 2013-12-27T08:33:19.827

The method you need is BitConverter.ToInt32()

Change the code such that:

byte[] bb = new byte[4] { 64, 1, 0, 0 }; 
textBox1.Text = BitConverter.ToInt32(bb, 0).ToString();

Note that BitConnverter takes a byte array and a start index.

In your example, you just have a 4 byte array. if you are going to read from a large array and convert the values one by one, make sure you pass the correct index to the ToInt32 method.

Wrong in convert four byte to integer then display in textbox

1 Answers1