Remove trailing zeros

Question

I have some fields returned by a collection as

2.4200
2.0044
2.0000

I want results like

2.42
2.0044
2

I t

Answer 1

Very simple answer is to use TrimEnd(). Here is the result,

double value = 1.00;
string output = value.ToString().TrimEnd('0');

Output is 1 If my value is 1.01 then my output will be 1.01

Answer 2

Use the hash (#) symbol to only display trailing 0's when necessary. See the tests below.

decimal num1 = 13.1534545765;
decimal num2 = 49.100145;
decimal num3 = 30.000235;

num1.ToString("0.##");       //13.15%
num2.ToString("0.##");       //49.1%
num3.ToString("0.##");       //30%

Answer 3

Truncate trailing Zeros is very easy, resolve with a duplex cast:

        decimal mydecimal = decimal.Parse("1,45000000"); //(I)
        decimal truncate = (decimal)(double)mydecimal;   //(II)

(I) --> Parse decimal value from any string source.

(II) --> First: Cast to double this remove the trailing zeros. Second: Other cast to decimal because dont exist implicit conversion from decimal to double and viceversa)

Answer 4

In my opinion its safer to use Custom Numeric Format Strings.

decimal d = 0.00000000000010000000000m;
string custom = d.ToString("0.#########################");
// gives: 0,0000000000001
string general = d.ToString("G29");
// gives: 1E-13

Answer 5

This will work:

decimal source = 2.4200m;
string output = ((double)source).ToString();

Or if your initial value is string:

string source = "2.4200";
string output = double.Parse(source).ToString();

Pay attention to this comment.

Answer 6

You can just set as:

decimal decNumber = 23.45600000m;
Console.WriteLine(decNumber.ToString("0.##"));