Convert hex value of type string to byte and AND them

Question

I have two values. one string in hex. another string in binary. Have to convert the first string in binary and apply "AND" to them.

string mask = "2F"; // binary value of hex would be 0010 1111
string binary = "0010 0000";

// convert mask to binary

string binaryMask = ConvertToString(mask); // result must be 0010 1111;

string result = binaryMask & binary; // AND them both - result : 0010 0000

Answer 1

First, remove whitespace from your binary string (if you are not sure about input, you can remove whitespace on both strings):

string mask = "2F";

/* You can use "0010 0000".Trim().Replace(" ", ""); 
   to make sure there is no whitespace at beginning/end 
   of the string */
string binary = "0010 0000".Replace(" ", ""); 

Convert both values to numeric:

// You can use .TryParse() here, to make sure if input is valid.
var a = short.Parse(mask, System.Globalization.NumberStyles.HexNumber); 
// or var a = Convert.ToInt32(mask, 16);
var b = Convert.ToInt32(binary, 2);

Apply AND operator:

var c = a & b;

Convert the result to string again:

string result = Convert.ToString(c, 2);

Output:

100000

Answer 2

I found a solution

string value = "2F";
string value2 = "00100000";

int value1Int = Convert.ToInt32(value, 16);
int value2Int = Convert.ToInt32(value2, 2);

var and = value1Int & value2Int;
var hex = and.ToString("X");