Java的 milliseconds 轉成 c#的 DateTime

long javaMilliSec = 1386862447000;

new DateTime(1970,1,1,0,0,0,DateTimeKind.Utc).Add(new TimeSpan(javaMilliSec *TimeSpan.TicksPerMillisecond)).ToString("yyyy/MM/dd HH:mm:ss")

ref: Get c# DateTime from Java System.currentTimeMillis