C# version of Javascript Date.getTime()

Question

What is the best way in c# to get the same result of javascript date.gettime() call?

The getTime() method returns the number of milliseconds since midnigh

Answer 1

The currently accepted answer returns an int which is incorrect. It has to be Int64 or long. This is just rewriting the correct answer provided by Matt Johnson-Pint (and edited by Adaptabi) as one line. Please accept Matt Johnson-Pint's answer. I checked it against actual javascript new Date().getTime() in the console to verify it returns the same number.

long JavascriptGetTime()
{
    return (long)DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalMilliseconds;            
}