C # timestamp conversion C # and Linux timestamp Conversion

Conversion from: C # and Linux timestamp Conversion /// <Summary> /// Convert the timestamp to C # format time /// </Summary> /// <Param name = "timestamp"> </param> /// <Returns> </returns> Private datetime gettime (string timestamp) { Datetime dtstart = timezone. currenttimezone. tolocaltime (New datetime (1970, 1, 1 )); Long ltime = long. parse (timestamp + "0000000 "); Timespan tonow = new timespan (ltime); Return dtstart. Add (tonow ); }   /// <Summary> /// Convert the datetime format to the Unix timestamp format /// </Summary> /// <Param name = "time"> </param> /// <Returns> </returns> Private int convertdatetimeint (system. datetime time) { System. datetime starttime = timezone. currenttimezone. tolocaltime (new system. datetime (1970, 1, 1 )); Return (INT) (time-starttime). totalseconds; } /// <Summary> /// Convert the timestamp to C # format time /// </Summary> /// <Param name = "timestamp"> </param> /// <Returns> </returns> Private datetime gettime (string timestamp) { Datetime dtstart = timezone. currenttimezone. tolocaltime (New datetime (1970, 1, 1 )); Long ltime = long. parse (timestamp + "0000000 "); Timespan tonow = new timespan (ltime); Return dtstart. Add (tonow ); }   /// <Summary> /// Convert the datetime format to the Unix timestamp format /// </Summary> /// <Param name = "time"> </param> /// <Returns> </returns> Private int convertdatetimeint (system. datetime time) { System. datetime starttime = timezone. currenttimezone. tolocaltime (new system. datetime (1970, 1, 1 )); Return (INT) (time-starttime). totalseconds; }