如何将十六进制值转换为biginteger？

Question

I mean how can I convert my hexadecimal values to biginteger ?

for example i use this :

string value="A1";
BigInteger bi=new BigInteger(value,16);

bi =161; this is true? So how can I convert back it to "A1"?

thanks..

Answer 1

String.Format supports this:

String.Format("0:x", 161);

Working example:

        string value="A1";
        BigInteger bi = BigInteger.Parse(value, NumberStyles.HexNumber);
        string newVal = string.Format("{0:x}", bi);
        //newVal is a1

UPDATE: The above suggestion is valid for the BigInteger implementation in the System.Numerics namespace of .NET

Answer 2

要将BigInteger转换回十六进制字符串，您可以按照以下方式进行操作：

string value= bi.ToString("X");

Answer 3

ToString在BigInteger被覆盖：

bi.ToString("X")