Xceed.Wpf.Toolkit.DateTimeParser.ComputeDateTimeString C# (CSharp) Méthode

    private static string ComputeDateTimeString( string dateTime, string format, DateTime currentDate, CultureInfo cultureInfo )
    {
      Dictionary<string, string> dateParts = GetDateParts( currentDate, cultureInfo );
      string[] timeParts = new string[ 3 ] { currentDate.Hour.ToString(), currentDate.Minute.ToString(), currentDate.Second.ToString() };
      string millisecondsPart = currentDate.Millisecond.ToString();
      string designator = "";
      string[] dateTimeSeparators = new string[] { ",", " ", "-", ".", "/", cultureInfo.DateTimeFormat.DateSeparator, cultureInfo.DateTimeFormat.TimeSeparator };

      UpdateSortableDateTimeString( ref dateTime, ref format, cultureInfo );

      var dateTimeParts = dateTime.Split( dateTimeSeparators, StringSplitOptions.RemoveEmptyEntries ).ToList();
      var formats = format.Split( dateTimeSeparators, StringSplitOptions.RemoveEmptyEntries ).ToList();

      //Auto-complete missing date parts
      if( dateTimeParts.Count < formats.Count )
      {
        while( dateTimeParts.Count != formats.Count  )
        {
          dateTimeParts.Add( "0" );
        }
      }

      //something went wrong
      if( dateTimeParts.Count != formats.Count )
        return string.Empty;

      for( int i = 0; i < formats.Count; i++ )
      {
        var f = formats[ i ];
        if( !f.Contains( "ddd" ) && !f.Contains( "GMT" ) )
        {
          if( f.Contains( "M" ) )
            dateParts[ "Month" ] = dateTimeParts[ i ] != "0" ? dateTimeParts[ i ] : "1";
          else if( f.Contains( "d" ) )
            dateParts[ "Day" ] = dateTimeParts[ i ] != "0" ? dateTimeParts[ i ] : "1";
          else if( f.Contains( "y" ) )
          {
            dateParts[ "Year" ] = dateTimeParts[ i ] != "0" ? dateTimeParts[ i ] : "0001";

            if( dateParts[ "Year" ].Length == 2 )
              dateParts[ "Year" ] = string.Format( "{0}{1}", currentDate.Year / 100, dateParts[ "Year" ] );
          }
          else if( f.Contains( "h" ) || f.Contains( "H" ) )
            timeParts[ 0 ] = dateTimeParts[ i ];
          else if( f.Contains( "m" ) )
            timeParts[ 1 ] = dateTimeParts[ i ];
          else if( f.Contains( "s" ) )
            timeParts[ 2 ] = dateTimeParts[ i ];
          else if( f.Contains( "f" ) )
            millisecondsPart = dateTimeParts[ i ];
          else if( f.Contains( "t" ) )
            designator = dateTimeParts[ i ];
        }
      }

      var date = string.Join( cultureInfo.DateTimeFormat.DateSeparator, dateParts.Select( x => x.Value ).ToArray() );
      var time = string.Join( cultureInfo.DateTimeFormat.TimeSeparator, timeParts );
      time += "." + millisecondsPart; 

      return String.Format( "{0} {1} {2}", date, time, designator );
    }