I am trying to filter by the LastModifiedDateTime when asking for a list of Service Announcements. But it is not working. The documentation 1 for List serviceAnnouncement messages indicates it accepts the OData Query parameters.
Here is what I am doing.
var messages = await graphClient.Admin.ServiceAnnouncement.Messages
Here is my filterString : "LastModifiedDateTime gt '11/5/2018 11:16:38 AM -06:00'"
I am using a System.DateTimeOffset for the value to filter on. Because that is what it looks like in the debugger after a successful get.
In my googling it always seems that the specific object does not support filtering by lastModifiedDate. But I do not know where to look to see if this is supported and I am doing something wrong, or it just is not supported.
Any help or advice appreciated.