How to remove last zeros in decimal

Question

I am trying to remove last zero of a decimal value search a lot for this but all answers in web and stack overflow removing all zeros. My aim to display some zeros in last.

Sample
50.00000000
50.01000000
50.01010000
50.01011000
50.01010100

expected 
    50.00
    50.01
    50.0101
    50.01011
    50.010101

I dont lnow how to do it in c#.

I was tried many things like .ToString("G29"); and other answers available but its all giving me like

Please Help..

@Ivar 50.00 if no decimal fraction then it should be .00 in last — Imran Ali Khan, Oct 04 '17 at 07:59
I agree with Alex and Erno de Weerd. See https://learn.microsoft.com/en-us/dotnet/standard/base-types/custom-numeric-format-strings to know how custom numeric format works :). — benichka, Oct 04 '17 at 08:20

MatSnow · Accepted Answer · 2017-10-04T08:21:28.777

4

Try this:

decimal num = 50.00m;
decimal num2 = 50.01010100m;
Console.WriteLine(num.ToString("0.00#########"));
Console.WriteLine(num2.ToString("0.00#########"));

Output:

50.00
50.010101

(Like suggested in comments by "Alex" and "Erno de Weerd")

edited Oct 04 '17 at 08:21

answered Oct 04 '17 at 08:08

MatSnow

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3
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Mong Zhu · Answer 2 · 2017-10-04T08:08:54.140

You could use TrimEnd to remove the last zeros like this:

decimal num = 50.01011000m;

if (num % 1 == 0)
{
    return num.ToString("0.00", System.Globalization.CultureInfo.InvariantCulture);
}       
string str = num.ToString().TrimEnd('0');

Console.WriteLine(str);

output:

50,01011

You could also pack it into an extension method:

public static class Extensions
{
    public static string ToTrimmendString(this decimal num)
    {
        if (num % 1 == 0)
        {
            return num.ToString("0.00", System.Globalization.CultureInfo.InvariantCulture);
        }
        return num.ToString().TrimEnd('0');
    }
}

and call it like this:

Console.WriteLine(num.ToTrimmendString());

score 0 · Answer 3 · answered Oct 04 '17 at 08:04

0

You can try

    double num = 50.010110000;
    Console.WriteLine(num.ToString("0.0000", CultureInfo.InvariantCulture) );

Please see this for more info https://learn.microsoft.com/en-us/dotnet/standard/base-types/custom-numeric-format-strings#SpecifierPt`

answered Oct 04 '17 at 08:04

Soumen Mukherjee

2,953
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`50.00000000` would result in `50.0000`. Not the expected `50.00`. – Ivar Oct 04 '17 at 08:08
So you have to vary the format string as per your requirement , so if you want only 2 decimal places you will have to use num.ToString("0.00.... – Soumen Mukherjee Oct 04 '17 at 08:10

styx · Answer 4 · 2017-10-04T08:22:11.570

0

you can try something like this

public decimal removeTrailingZeros(decimal val)
{
    return val % 1 == 0 ? Math.Round(val, 2) : val / 1.0000000000000000000000000000000000m;
}

test input

50.00000000m, 50.01000000m, 50.01010000m, 50.01011000m, 50.01010100m,

output

50.00 50.01 50.0101 50.01011 50.010101

edited Oct 04 '17 at 08:22

answered Oct 04 '17 at 08:07

styx

1,852
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22

Why would this work? – Uwe Keim Oct 04 '17 at 08:07
because is how division between decimal numbers works – styx Oct 04 '17 at 08:11
1

50 != 50.00 as desired. – Magnus Oct 04 '17 at 08:15
@Magnus edited, not as i clean as i wanted but will do the trick – styx Oct 04 '17 at 08:22
1

Seems a little bit overkill compared to the use of `ToString(0.00####)`... – benichka Oct 04 '17 at 08:26
@benichka true, but in this way, he will get a decimal back and not string as another answers suggested – styx Oct 04 '17 at 08:30

How to remove last zeros in decimal

4 Answers4