如何在 C# 內取得 Unix TimeStamp

方法一

var unixTimestamp = (Int32)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;

方法二

var foo = DateTime.UtcNow;
long unixTime = ((DateTimeOffset)foo).ToUnixTimeSeconds();

StackOverflow : How to get the unix timestamp in C#