Converting string to Timespan

Hi,

I am working in c# ASP.net

I need help in creating logic. I might get the time in different format. I don;t want to put so many if and else.

My time format might comes from input fields like this

00:14:54
00:14:54.4
00:14:54.49
00:14:54.494
00:14:54.4942
00:14:54.49427
00:14:54.494271

Now, I wanted to convert the above in the Timespan. My below code gives error because I have 5 digits after "." and I have 6 f (.ffffff) in the timespan format.

TimeSpan timeSpan = TimeSpan.ParseExact("00:14:54.49427", @"hh\:mm\:ss\.ffffff", CultureInfo.InvariantCulture, TimeSpanStyles.None);

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Error:

Stack Trace:


[System.FormatException: Input string was not in a correct format.]
   at System.Globalization.TimeSpanParse.TryParseByFormat(String input, String format, TimeSpanStyles styles, TimeSpanResult& result)
   at System.Globalization.TimeSpanParse.TryParseExactTimeSpan(String input, String format, IFormatProvider formatProvider, TimeSpanStyles styles, TimeSpanResult& result)
   at System.Globalization.TimeSpanParse.ParseExact(String input, String format, IFormatProvider formatProvider, TimeSpanStyles styles)
   at System.TimeSpan.ParseExact(String input, String format, IFormatProvider formatProvider, TimeSpanStyles styles)
   at Program.Main() :line 9

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   Please help me creating good logic to get timespan from any of the formats.

Kind Regards,