CODEWITHSUNDEEP
c#
Rohit Raghuvansi
Rohit Raghuvansi

Reputation: 2864

convert 0.5 to 0.50 in C#

I have a string which holds 0.5. I have to convert in to 0.50.

I have tried following ways but nothing works.Please help

hdnSliderValue.Value is 0.5,I want workFlow.QualityThresholdScore to be 0.50

workFlow.QualityThresholdScore = Convert.ToDecimal(String.format("{0:d}",hdnSliderValue.Value));

workFlow.QualityThresholdScore = Convert.ToDecimal(String.format("{0:0.00}",hdnSliderValue.Value));

IS there any built in function or will i have to do string handling to accomplish this.

Upvotes: 6

Views: 4603

Answers (5)

user159335
user159335

Reputation:

Stringy version since no-one has suggested it.

      string pointFive = "0.5";
      int decimals = (pointFive.Length-1) - pointFive.IndexOf('.');
      if (decimals >= pointFive.Length)
        pointFive += ".00";
      else if (decimals == 1)
        pointFive += "0";
      else if (decimals == 0)
        pointFive += "00";

Might even be quicker than numeric conversions and formatting functions.

Upvotes: 0

Hans Olsson
Hans Olsson

Reputation: 55039

It's ToString("N2").

Edit: Add test code to show how it works

decimal a = 0.5m;
Console.WriteLine(a);
// prints out 0.5
string s = a.ToString("N2");
decimal b = Convert.ToDecimal(s);
// prints out 0.50
Console.WriteLine(b);

Upvotes: 2

Jon Skeet
Jon Skeet

Reputation: 1502166

The simplest way probably is to use string conversions:

string text = "0.5";
decimal parsed = decimal.Parse(text);
string reformatted = parsed.ToString("0.00");
decimal reparsed = decimal.Parse(reformatted);

Console.WriteLine(reparsed); // Prints 0.50

That's pretty ugly though :(

You certainly could do it by first parsing the original string, then messing around with the internal format of the decimal - but it would be significantly harder.

EDIT: Okay, in case it's an i18n issue, here's a console app which should definitely print out 0.50:

using System;
using System.Globalization;

class Test
{
    static void Main()
    {
        CultureInfo invariant = CultureInfo.InvariantCulture;
        string text = "0.5";
        decimal parsed = decimal.Parse(text, invariant);
        string reformatted = parsed.ToString("0.00", invariant);
        decimal reparsed = decimal.Parse(reformatted, invariant);

        Console.WriteLine(reparsed.ToString(invariant)); // Prints 0.50
    }
}

Upvotes: 9

pymendoza
pymendoza

Reputation: 358

Have you tried workFlow.QualityThresholdScore = Convert.ToDecimal(hdnSliderValue.Value.ToString("N2"));

Upvotes: 0

Femaref
Femaref

Reputation: 61467

In numerics, 0.5 == 0.50. A zero doesn't add any information, so if QualityThresholdScore is of a numeric type, you will get 0.5 no matter what. If it is a string, use decimal.ToString("0.00");.

Upvotes: 0

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