Question

I have an old query that looks

UPDATE table1 SET date_time_field = NOW() + INTERVAL 5 MINUTE WHERE ...;

How can I do the same in EF ? I cannot write

....
table1_entity.date_time_field = DateTime.Now + TimeSpan.FromMinutes(5);

because the application and DB server may use different timezones. Is it possible to achieve this functionality without native queries (which is my current approach, but I don’t really like it) ?
Thanks.

Answer 1

Add the above method to your datacontext class to get the db server time:

[Function(Name="GetDate", IsComposable=true)]
public DateTime GetSystemDate()
{
  MethodInfo mi = MethodBase.GetCurrentMethod() as MethodInfo;
  return (DateTime)this.ExecuteMethodCall(this, mi, new object[]{}).ReturnValue;
}

Extracted from this post:

Entity Framework – update field value to current DB server time