Convert Hex Value thats in a text box to Individual Hex Pairs

Solution 1:

static string[] ToHexArray(uint value) {
    int len = sizeof(uint);
    string[] result = new string[len];
    for (int index = 0; index < len; ++index) {
        int shift = 8 * (len - index - 1);
        uint mask = (uint)byte.MaxValue << shift;
        uint masked = value & mask;   
        result[index] = ((byte)(masked >> shift)).ToString("X");
    } //loop
    return result;
}

Solution 2:

static string[] ToHexArray(uint value) {
    return System.Array.ConvertAll(
        System.BitConverter.GetBytes(value),
        new System.Converter<byte, string>(
            (src) => {
                return src.ToString("X");
        }));
}

First solution puts most significant figure at left (you can easily change it in code), second one — at right (Assembly language style; you cannot change it in algorithm but can reverse it later). You can add "0x" prefix to each string by using string.Format instead of ToString. You can use:

string[] hexArray = ToHexArray(
    uint.Parse(
        MyTextBox.Text,
        System.Globalization.NumberStyles.HexNumber));

Both solutions are tested.

Enjoy!

—SA