对于 UInt64，值太大或太小

Question

I have this code that i am trying to use to convert string of binary to decimal value. However, i am getting the following error:

Value was either too large or too small for a UInt64.

string a = "10100000100100110110010000010101111011011001101110111111111101000000101111001110001111100001101";
ulong value = Convert.ToUInt64(a, 2);
Console.WriteLine(value);

I have tried every possible solution available on the inte.net, but i'm still not getting the proper solution.

Answer 1

That string is 96 characters. So it represents 96 bits. You are trying to fit that into a UInt64 that, not surprisingly, can hold 64 bits only.

You can use a BigInteger for arbitrary large numbers.

https://learn.microsoft.com/en-us/do.net/api/system.numerics.biginteger?view.net-7.0