How to convert Long type datetime to DateTime with

Question

For example 1297380023295 should be 2010/2/11 9 AM I use this code right now

        long dateNumber = num;
        long beginTicks = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).Ticks;
        DateTime dateValue = new DateTime(beginTicks + dateNumber * 10000);

        return dateValue;

The result of this function is 1 AM,It is GMT. What can I do with it?

Answer 1

long a= 634792557112051692;
//a= ticks time
  DateTime dt = new DateTime(a);
   Response.Write(dt.Hour.ToString());


//dt.hour convert time ticks to time hour

Answer 2

You can specify the DateTimeKind when you create a new DateTime object, so you could specify that as UTC and then use .ToLocalTime to convert it to local time:

        long dateNumber = 1297380023295;
        long beginTicks = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).Ticks;

        DateTime dt = new DateTime(beginTicks + dateNumber * 10000, DateTimeKind.Utc);
        MessageBox.Show(dt.ToLocalTime().ToString());

Answer 3

Powershell script piece, just FYI

$minDate = New-Object "System.DateTime"
$minDate = $minDate.AddYears(1969)
$minDate.AddMilliseconds(1446616420947)

Answer 4

You're looking for the ToLocalTime() method:

long unixDate = 1297380023295;
DateTime start = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
DateTime date= start.AddMilliseconds(unixDate).ToLocalTime();