Hexadecimal on BigInteger

Question

I have a string which contains a big hexadecimal number, something like this :

string hexa = "292145F2E92145E6B92FAA6A95FF7E6B92145FAA6A22DE192145FAA696043F457306A";

I just want to transform this hexa string in a BigInteger variable (WITHOUT modifying the value of the string) to use it after.

Something like this :

BigInteger blabla = new BigInteger(hexa);

I just want the same string, but in BigInteger variable

Parsing `BigInteger` works just like the other integer types in C#. See duplicates. You may also want to read the answer to [this question](https://stackoverflow.com/questions/26871079/what-is-the-proper-way-to-construct-a-biginteger-from-an-implied-unsigned-hexedi) — Peter Duniho, Nov 03 '20 at 19:40

score 6 · Accepted Answer · edited Nov 03 '20 at 19:30

6

You can BigInteger.Parse it with AllowHexSpecifier flag given:

using System.Globalization;

...

string hexa = "292145F2E92145E6B92FAA6A95FF7E6B92145FAA6A22DE192145FAA696043F457306A";
var bigInt = BigInteger.Parse(hexa, NumberStyles.AllowHexSpecifier);

edited Nov 03 '20 at 19:30

Matthew

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answered Nov 03 '20 at 19:25

nkrivenko

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score 4 · Answer 2 · edited Nov 03 '20 at 20:31

4

Try the BigInteger.Parse static method, and pass either the NumberStyles.HexNumber or NumberStyles.AllowHexSpecifier flag.

edited Nov 03 '20 at 20:31

Pavel Anikhouski

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answered Nov 03 '20 at 19:25

Ben Voigt

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Hexadecimal on BigInteger

2 Answers2