converting Long hexadecimal string to decimal value

Question

I have an extra decimal string, which i have to convert to decimal value. I am doing this now. it works for smaller values , for larger values it fails.

long.TryParse(hexadecimalstringinput, System.Globalization.NumberStyles.HexNumber, null, out convertedValue))

For inputs such as "FFFF_FFFF_FFFF_FFFF_FFFF" it fails. Any alternate approach for this?

You would need 80 bits to store a 20 digit hex number anyway, which is too many bits for a long. — Sweeper
– Sweeper, Commented Nov 19, 2019 at 7:12
this might help you, have a look at below link stackoverflow.com/a/27362463/8279616 — Syed Wahhab
– Syed Wahhab, Commented Nov 19, 2019 at 7:16
maybe this will help you: stackoverflow.com/questions/227731/int128-in-net — Ariel
– Ariel, Commented Nov 19, 2019 at 8:15

Mihaeru · Accepted Answer · 2019-11-19 07:20:01Z

1

If you really need to handle such values, take a look on BigInteger: MSDN BigInteger

answered Nov 19, 2019 at 7:20

Mihaeru

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