Append TimeStamp to a File Name

Question

I have come across this problem several times in which I would like to have multiple versions of the same file in the same directory  The way I have been doing it using C  is by adding a time stamp to the file name with something like this DateTime Now ToString   Replace       -   Replace             Is there a better way to do this

User · Answer

You can use below instead   DateTime Now Ticks

User · Answer

You can use DateTime ToString Method  String   DateTime Now ToString  yyyyMMddHHmmssfff     or string Format  string Format   0 yyyy-MM-dd HH-mm-ss-fff    DateTime Now    or Interpolated Strings     DateTime Now yyyy-MM-dd HH-mm-ss-fff       There are following custom format specifiers y  year   M  month   d    day   h  hour 12   H  hour 24   m  minute   s  second   f  second   fraction   F  second fraction  trailing zeroes are trimmed   t  P M or   A M  and z  time zone     With Extension Method   Usage   string result    myfile txt  AppendTimeStamp      myfile20130604234625642 txt   Extension method  public static class MyExtensions       public static string AppendTimeStamp this string fileName                return string Concat              Path GetFileNameWithoutExtension fileName               DateTime Now ToString  yyyyMMddHHmmssfff                Path GetExtension fileName

User · Answer

you can use   Stopwatch GetTimestamp

User · Answer

Perhaps appending DateTime Now Ticks instead  is a tiny bit faster since you won t be creating 3 strings and the ticks value will always be unique also

User · Answer

I prefer to use   string result    myFile     DateTime Now ToFileTime       txt     What does ToFileTime   do      Converts the value of the current DateTime object to a Windows file time       public long ToFileTime         A Windows file time is a 64-bit value that represents the number of 100-nanosecond intervals that have elapsed since 12 00 midnight  January 1  1601 A D   C E   Coordinated Universal Time  UTC   Windows uses a file time to record when an application creates  accesses  or writes to a file    Source  MSDN documentation - DateTime ToFileTime Method

User · Answer

For Current date and time as the name for a file on the file system  Now call the string Format method  and combine it with DateTime Now  for a method that outputs the correct string based on the date and time   using System  using System IO   class Program       static void Main                               Write file containing the date with BIN extension                    string n   string Format  text- 0 yyyy-MM-dd hh-mm-ss-tt  bin               DateTime Now           File WriteAllText n   abc              Output    C  Users Fez Documents text-2020-01-08 05-23-13-PM bin       text- 0 yyyy-MM-dd hh-mm-ss-tt  bin       text-      The first part of the output required             Files will all start with text-       0         Indicates that this is a string placeholder             The zero indicates the index of the parameters inserted here      yyyy-      Prints the year in four digits followed by a dash             This has a  year 10000  problem      MM-        Prints the month in two digits      dd         Prints the day in two digits followed by an underscore      hh-        Prints the hour in two digits      mm-        Prints the minute  also in two digits      ss-        As expected  it prints the seconds      tt         Prints AM or PM depending on the time of day

[c#] Append TimeStamp to a File Name

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