Convert int to hex format 0xyy c#

Question

I need to write a function which receives one parametrer of type int (decimal), and returns string containing the int value in hex, but in format 0xyy.
More than that I want the answer to be in a fixed format of 4 Bytes For example:

int b = 358;
string ans = function(b);

In this case ans = "0x00 0x00 0x01 0x66"

int a = 3567846; 
string ans = function(a);

In this case ans = "0x00 0x36 0x70 0xE6"

http://stackoverflow.com/questions/1139957/c-sharp-convert-integer-to-hex-and-back-again — andy, Jan 02 '13 at 12:05

Rawling · Accepted Answer · 2013-01-02T12:29:05.150

5

This should match your examples:

static string Int32ToBigEndianHexByteString(Int32 i)
{
    byte[] bytes = BitConverter.GetBytes(i);
    string format = BitConverter.IsLittleEndian
        ? "0x{3:X2} 0x{2:X2} 0x{1:X2} 0x{0:X2}"
        : "0x{0:X2} 0x{1:X2} 0x{2:X2} 0x{3:X2}";
    return String.Format(format, bytes[0], bytes[1], bytes[2], bytes[3]);
}

edited Jan 02 '13 at 12:29

answered Jan 02 '13 at 12:16

Rawling

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Excellent usage of Big/Little Endian! +1 – myermian Jan 02 '13 at 12:21

score 1 · Answer 2 · answered Jan 02 '13 at 12:13

1

I think the format you want is on similar lines

int ahex = 3567846;
byte[] inthex = BitConverter.GetBytes(ahex);
Console.WriteLine("0x"+ BitConverter.ToString(inthex).Replace("-"," 0x"));

answered Jan 02 '13 at 12:13

V4Vendetta

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Neat, didn't know about that `ToString` method. – Rawling Jan 02 '13 at 12:17

Convert int to hex format 0xyy c#

2 Answers2