How to convert datetime to byte[]

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I am trying to convert dateTime object to byte[].

C#

DateTime dt = Convert.ToDateTime(Current_date_time);

I tried to store this value in byte array as

C#

arrProp = BitConverter.GetBytes(d);

but ended up getting an exception.
How to resolve this isuue ?

What I have tried:

byte[] arrProp = null;
DateTime dt = Convert.ToDateTime(objDevice.deviceRecord.Current_date_time);
arrProp = BitConverter.GetBytes(dt);

Posted 22-Sep-16 20:09pm

Alex Sprint

Updated 22-Sep-16 20:37pm

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Comments

Garth J Lancaster 23-Sep-16 2:14am

its a pity you dont indicate what the exception is ... I would have thought you would have needed to do something like

arrProp = BitConverter.GetBytes(dt.Ticks);

Alex Sprint 23-Sep-16 2:21am

Yeah Garth I tried using arrProp = BitConverter.GetBytes(dt.Ticks);
nd it worked fine.
Thanks for the suggestion :)

Garth J Lancaster 23-Sep-16 2:25am

no worries - Ive copied that to the solution, so anyone else can easily see it

Alex Sprint 23-Sep-16 2:34am

How to store this value in 4 bytes. Its actually getting stored in 8 bytes. But need to store it in 4 bytes.

Garth J Lancaster 23-Sep-16 10:13am

due to the resolution of Ticks you cant store a full datetime in less than Int64 ie 8 bytes

you could manually encode 'less resolution' into 4 bytes, but you'd also then need a manual decode

Alex Sprint 26-Sep-16 6:17am

Thanks Garth :)

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Garth J Lancaster · Accepted Answer · 2016-09-22T20:24:00

Solution 1

as commented,

C#

arrProp = BitConverter.GetBytes(dt.Ticks);

:-)

[edit] the inverse operation

C#

DateTime myDateTime = DateTime.FromBinary(BitConverter.ToInt64(arrProp, 0))

[/edit]

Posted 22-Sep-16 20:24pm

Garth J Lancaster

Updated 22-Sep-16 20:27pm

v2

Comments

Karthik_Mahalingam 23-Sep-16 2:42am

5