TimeSpan addition and subtraction

Question

TimeSpan addition and subtraction

I need to add 2 times taken from a textbox formatted like this: mm: ss.fff

For example:
00:59,800

+ 00:02,300

- the result should be 01:02.100

, but instead I have 01:02,060

.

I think I have a problem with my transformation below:

string Sum1 = "00:" + "00:59,800";
Sum1 = Sum1.Replace(',', '.');
double FSum1 = TimeSpan.Parse(Sum1).TotalSeconds;

string Sum2 = "00:" + "00:02,300";
Sum2 = Sum2.Replace(',', '.');
double FSum2 = TimeSpan.Parse(Sum2).TotalSeconds;

double SumResult = FSum1 + FSum2;

maskedTextBoxSumResult.Text = TimeSpan.FromMinutes(SumResult).ToString(@"hh\:mm\:ss\.fff");

Also, I need to do the same with subtraction.

Thank you for your help.

+3

c # timespan addition

ffb.boy.30 June 13. 17 at 13:44

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5 answers

Dmitry Bychenko · Answer 1 · 2017-06-13T13:50:39+0000

Are you looking for TimeSpan.ParseExact

?

  string left = "00:59,800";
  string right = "00:02,300";

  var result = TimeSpan.ParseExact(left, @"mm\:ss\,fff", CultureInfo.InvariantCulture) +
               TimeSpan.ParseExact(right, @"mm\:ss\,fff", CultureInfo.InvariantCulture);

  Console.Write(result.ToString(@"mm\:ss\.fff"));

Result:

  01:02.100

ffb.boy.30 · Answer 2 · 2017-06-13T13:56:09+0000

Here is my solution

TimeSpan t1 = TimeSpan.Parse(maskedTextBoxSum1.Text);
TimeSpan t2 = TimeSpan.Parse(maskedTextBoxSum2.Text);
TimeSpan t3 = t1.Add(t2);
maskedTextBoxSumResult.Text = t3.ToString(@"hh\:mm\:ss\.fff");

thank

James curran · Answer 3 · 2017-06-13T14:33:05+0000

Do not modify the string to parse it. Use correct cultural information instead:

string Sum1 = "00:" + "00:59,800";
string Sum2 = "00:" + "00:02,300";

var frfr = new System.Globalization.CultureInfo("fr-FR");

var FSum1 = TimeSpan.Parse(Sum1, frfr);
var FSum2 = TimeSpan.Parse(Sum2, frfr);;

var SumResult = FSum1 + FSum2;
SumResult.ToString(@"hh\:mm\:ss\.fff").Dump();

mjwills · Answer 4 · 2017-06-13T13:54:26+0000

Many of your transformations are unnecessary. Try the following:

    static  void Main()
    {
        string Sum1 = "00:" + "00:59,800";
        Sum1 = Sum1.Replace(',', '.');
        var FSum1 = TimeSpan.Parse(Sum1);

        string Sum2 = "00:" + "00:02,300";
        Sum2 = Sum2.Replace(',', '.');
        var FSum2 = TimeSpan.Parse(Sum2);

        var SumResult = FSum1 + FSum2;

        var bo  =  SumResult.ToString(@"hh\:mm\:ss\.fff");
        Console.WriteLine(bo);

        Console.ReadLine();
    }

Samir oliveira · Answer 5 · 2017-06-13T13:56:57+0000

You don't need to convert to double to sum the values.

string Sum1 = "00:" + "00: 59,800"; string Sum2 = "00:" + "00: 02,300";

TimeSpan sumResult = TimeSpan.Parse (Sum1) + TimeSpan.Parse (Sum2);

maskedTextBoxSumResult.Text = sumResult.ToString (@ "hh: mm: ss.fff");

TimeSpan addition and subtraction

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