/*  Custom TimeSpan formar   
	@"%s",
	@"%s\.f",
	@"%s\.f",
	@"%s\.ff",
	@"%s\.fff",
	  
	@"%m\:%s",
	@"%m\:%s\.f",
	@"%m\:%s\.ff",
	@"%m\:%s\.fff",
	  
	@"%h\:%m\:%s",
	@"%h\:%m\:%s\.f",
	@"%h\:%m\:%s\.ff",
	@"%h\:%m\:%s\.fff"
	*/
   
   void Main()
   {
	  string[] inputs = { 
	  @"14:15:16.520",	  
	  @"14:15:16.52",
	  @"14:15:16.5",
	  @"14:15:16",
	  
	  @"15:16.520",	  
	  @"15:16.52",
	  @"15:16.5",
	  @"15:16",
	  
	  @"16.520",	  
	  @"16.52",
	  @"16.5",
	  @"0.5",
	  @"16",
	  
	  }; 
						  
	  string[] formats = { 
	  @"%s",
	  @"%s\.f",
	  @"%s\.f",
	  @"%s\.ff",
	  @"%s\.fff",
	  
	  @"%m\:%s",
	  @"%m\:%s\.f",
	  @"%m\:%s\.ff",
	  @"%m\:%s\.fff",
	  
	  @"%h\:%m\:%s",
	  @"%h\:%m\:%s\.f",
	  @"%h\:%m\:%s\.ff",
	  @"%h\:%m\:%s\.fff",

	  };

	  TimeSpan interval;
 
	  
	 
	  // Parse each string in inputs using formats and the de-DE culture. 
	  foreach (string input in inputs) {
		 try {
			 if (TimeSpan.TryParseExact(input, formats, null, out interval))
		    	 Console.WriteLine("{0} --> {1}", input, interval.ToString("g"));
	  		 else
		 		Console.WriteLine("Unable to parse '{0}'", input);
		 }
		 catch (FormatException) {
			Console.WriteLine("{0} --> Bad Format", input);
		 }      
		 catch (OverflowException) {
			Console.WriteLine("{0} --> Overflow", input);   
		 }            
	  }
   }