Coverting string to decimal

Question

how to convert string to decimal upto 3 places?

my string will be like this

striing aa = "22.333"
string  bb = "22"
string cc = "22.4444"

how to convert this to decimal

Have you even tried putting your question title into Google? Or the search on here? — Charles Mager, Jun 18 '15 at 11:38
https://msdn.microsoft.com/en-us/library/system.decimal.parse(v=vs.110).aspx — Paul Sullivan, Jun 18 '15 at 11:38
i m stucked here. pls help. i will lose jobe for this today .. new to asp.net — Bhavin Bhaskaran, Jun 18 '15 at 11:40
i need to know it for 3 decimal places. my brain is blank now.. — Bhavin Bhaskaran, Jun 18 '15 at 11:41
What? You loose your job because you can't parse these strings to decimal? — Soner Gönül, Jun 18 '15 at 11:48

score 2 · Answer 1 · answered Jun 18 '15 at 12:36

You can convert and round in one line - and one line to take care of localization:

string cc = "22.4444";
IFormatProvider provider = System.Globalization.CultureInfo.InvariantCulture;
decimal ccDecimal = Math.Round(Convert.ToDecimal(cc,provider), 3);

Will return 22.444.

score 0 · Answer 2 · answered Jun 18 '15 at 11:39

0

You can do it with decimal.Parse (ToDecimal) Method: https://msdn.microsoft.com/de-de/library/hf9z3s65%28v=vs.110%29.aspx

string value = "22.333";
decimal d = decimal.Parse(s);

answered Jun 18 '15 at 11:39

Luca

1,766
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i m stucked here. pls help. i will lose jobe for this today .. new to asp.net i need to know it for 3 decimal places. my brain is blank now.. – – Bhavin Bhaskaran Jun 18 '15 at 11:41
Than you can use the TryParse Method: value = "22.333"; if (Decimal.TryParse(value, out number)) Console.WriteLine(number); else Console.WriteLine("Unable to parse '{0}'.", value); – Luca Jun 18 '15 at 11:44
1

This code is *not* safe - it will fail in cultures that use `,` as a decimal point. A lot of European countries do. The compiler will even give a warning about this. The duplicate question shows the correct way to parse using the InvariantCulture – Panagiotis Kanavos Jun 18 '15 at 12:49

Xlaech · Answer 3 · 2015-06-18T14:48:42.497

0

First you can convert your String to a Decimal Value:

var convertDecimal = Convert.ToDecimal(value);

Afterwards you can round it up, if it is longer:
https://msdn.microsoft.com/en-us/library/system.math.round(v=vs.110).aspx

As far as i know, you cant "convert" the String to a decimal with 3 Positions, if its smaller, because it is saved with the zeros anyway

edited Jun 18 '15 at 14:48

answered Jun 18 '15 at 11:40

Xlaech

456
3
19

1

This code is *not* safe - it will fail in cultures that use `,` as a decimal point. A lot of European countries do. The compiler will even give a warning about this. The duplicate question shows the correct way to parse using the InvariantCulture – Panagiotis Kanavos Jun 18 '15 at 12:50
The other solution just surrounds the statement with a try-catch block. For me they where not part of the solution, because it is a general Problem your might encounter when parsing non-basic types. But you are write. I edit the answer. – Xlaech Jun 18 '15 at 14:37
No other answer uses try/catch. The accepted answer in the duplicate uses CultureInfo.InvariantCulture. In fact, both the compiler *and* Resharper give a warning with such code, suggesting to use `CultureInfo.InvariantCulture` – Panagiotis Kanavos Jun 18 '15 at 14:46
a i see i was to fast... – Xlaech Jun 18 '15 at 14:48

score 0 · Answer 4 · edited Jun 18 '15 at 12:04

0

3 places can be achieved with Math.Round. Safest string conversion would be the TryParse method:

 string srcString = "123.45123";

 decimal outDecimal;

 if (decimal.TryParse(srcString, out outDecimal))
 {
     // conversion is successful, so you can use outDecimal variable  
     outDecimal = decimal.Round(outDecimal, 3, MidpointRounding.AwayFromZero); 
 }

edited Jun 18 '15 at 12:04

Charles Mager

25,735
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answered Jun 18 '15 at 11:52

yurart

593
1
6
23

2

This code is *not* safe - it will fail in cultures that use `,` as a decimal point. A lot of European countries do. The compiler will even give a warning about this. The duplicate question shows the correct way to parse using the InvariantCulture – Panagiotis Kanavos Jun 18 '15 at 12:48
Yes, I forgot about culture – yurart Jun 18 '15 at 15:24

Gane · Answer 5 · 2015-06-18T12:40:52.103

0

You could doing something like this

    string aa = "22.333";
    string bb = "22";
    string cc = "22.4444";

    decimal d = decimal.Parse(aa);
    decimal e = decimal.Parse(bb);
    decimal f = decimal.Parse(cc);

    Console.WriteLine(string.Format("{0:0.000}", d));
    Console.WriteLine(string.Format("{0:0.000}", e));
    Console.WriteLine(string.Format("{0:0.000}", f));

edited Jun 18 '15 at 12:40

answered Jun 18 '15 at 12:04

Gane

120
11

Well, you should test it. It won't. You can't format a string using a number format: https://dotnetfiddle.net/gIC4oS – Charles Mager Jun 18 '15 at 12:05
1

This code is *not* safe - it will fail in cultures that use `,` as a decimal point. A lot of European countries do. The compiler will even give a warning about this. The duplicate question shows the correct way to parse using the InvariantCulture – Panagiotis Kanavos Jun 18 '15 at 12:50

score 0 · Answer 6 · answered Jun 18 '15 at 12:44

0

try it

string value;
decimal number;

value = "1,643.57";
if (Decimal.TryParse(value, out number))
   Console.WriteLine(number);
else
   Console.WriteLine("Unable to parse '{0}'.", value);

answered Jun 18 '15 at 12:44

Divyesh Mistry

1
1

1

This code is *not* safe - it will fail in cultures that use `,` as a decimal point. A lot of European countries do. The compiler will even give a warning about this. The duplicate question shows the correct way to parse using the InvariantCulture – Panagiotis Kanavos Jun 18 '15 at 12:48

Coverting string to decimal

6 Answers6