c# Convert double to string issue

Asked Nov 20 '20 at 06:57

Active Nov 20 '20 at 09:58

Viewed 101 times

I need your help on converting double to string

Here is my example double value

-981676354.3150035

4.920001983642578

I Want to convert that numbers

but If I use ToStinrg function like this

double value = -981676354.3150035;
var str = value.ToString("R");

It return -981676354.31500351 by adding 1 to the end

return -981676354.315004 by rounds up

I entirely want to convert double value itself to a string (ex -981676354.3150035 => -981676354.3150035)

Please Help!

Thanks in advance for your answers

asked Nov 20 '20 at 06:57

NamNam

I can't reproduce. It does not add a 1 at the end for me. – Sweeper Nov 20 '20 at 06:59
https://dotnetfiddle.net/u6bvT7 – TheGeneral Nov 20 '20 at 07:01
1

@TheGeneral Change the compiler to .NET 4.7.2 or Roslyn. – 41686d6564 stands w. Palestine Nov 20 '20 at 07:03
Hmm, can different results be produced depending on the execution environment? With the exact same code, my computer is returning a result with end of 1 – NamNam Nov 20 '20 at 07:05
do you want the amount of decimals to be fixed in the string representation of the double? – Mong Zhu Nov 20 '20 at 07:11
1

And to maden the madness https://dotnetfiddle.net/QQDlDa – TheGeneral Nov 20 '20 at 07:11
1

@MongZhu Unfortunately, the number of decimal places is flexible. – NamNam Nov 20 '20 at 07:13
1

Use `decimal` if you want confidence in the result. – mjwills Nov 20 '20 at 07:15
@mjwills i wonder if this touches on the huge flamewar post the other week about the bug with literals ect. https://github.com/dotnet/csharplang/discussions/4074 – TheGeneral Nov 20 '20 at 07:16
It could be the same issue @TheGeneral. Nonetheless - `double` is the wrong data type here. – mjwills Nov 20 '20 at 07:17

0 Answers0