TimeSpan.ParseExact（“ 000000.000”，“ hhmmss.fff”，CultureInfo.CurrentCulture）; 输入的字符串格式不正确C＃？

Question

I want to setup two TimeSpans lasttimestamp and time and set them to 0 like this :

        TimeSpan lasttimestamp = TimeSpan.ParseExact("000000.000","hhmmss.fff",CultureInfo.CurrentCulture);
        TimeSpan time = TimeSpan.ParseExact("000000.000", "hhmmss.fff", CultureInfo.CurrentCulture);   

then in a later while loop i want to set timestamp to a value in a log file in in the format hhmmss.fff and subtract it from the lasttimestamp timespan :

TimeSpan timestamp = TimeSpan.ParseExact(splitline[1], "hhmmss.fff", CultureInfo.CurrentCulture);
 time = timestamp.Subtract(lasttimestamp);

how ever it does not like the .fff part in the formating resulting in "Input string was not in a correct format" ?

I have tried with DateTime but get cannot convert TimeSpan to DateTime when performing the subtraction.

Thanks

Answer 1

You need to escape . in your format like @"hhmmss\\.fff" :

 TimeSpan lasttimestamp = TimeSpan.ParseExact(@"000000.000", 
                            @"hhmmss\.fff", CultureInfo.CurrentCulture);

But, you should use TimeSpan.Zero to set up zero time stamp like:

TimeSpan lastTimeSpanZero = TimeSpan.Zero;

Both will return same value.

(lasttimestamp == lastTimeSpanZero) == true

Later on, in your parsing escape the . .

TimeSpan timestamp = TimeSpan.ParseExact(splitline[1], 
                          @"hhmmss\.fff", CultureInfo.CurrentCulture);