I used the following code but this has stack overflow since Int64 accepts only 18-digits and I had 20-digit lenght value which need to be converted from base10 to base36

public static string Base36Encode(long value)
{
char[] base36Chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ".ToCharArray();
string returnValue = "";
while (value != 0)
{
returnValue = base36Chars[value % base36Chars.Length] + returnValue;
value /= 36;
}
return returnValue;
}

Any help is appreciated

Thank you in advance

Use the decimal data type instead long Long Int.

Thank you seun. But that doesn't work I am getting Integral constant is too large . Actually I am trying to convert this number 20090521003032796356 and expecting output as like this 00048MZBBINX8FD0.

Thank you

in C#, you can use ulong. The type allows up to 20 digits.

Kobojunkie:

in C#, you can use ulong. The type allows up to 20 digits.

Who teach this one programming?

I tried ulong double and decimal everything that's not working I am getting the same problem Integral constant is too large

Ulong double? Anyways, Check this out

http://blog.gadodia.net/handling-very-large-numbers-in-net/

Both seperately i.e I tried ulong seperately and double seperately when I am using double I am not getting the same value as I expected the last 2-digits differ ex: 20090521003032797856 expected 00048MZBBINX8GIO
getting
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000048MZBBINX8G00

any way leading zeros need to be tide up

When I am using ulong I am getting integral constant is too large

Thank you

Try the plugin I sent you. It comes highly recommended. Yes, Ulong only works with 20 digits up to a certain range. I just figured that out now.

the number he's trying to convert is only 20 digits long.

integral types have ranges. The range he is working with is beyond that of uint, ulong etc.