createdon field date-time format

Question

Compiling the following coe always get the same frustrating mistake. I'm trying to compare a "createdon" field to a the present date. I've tried several date format but stil not working...

Error detail : "The date-time format for 23/05/2012 14:01:55 is invalid"

Code snippet:

DateTime d = DateTime.Now;
                String.Format("{0:dd/MM/YYYY HH:mm:ss}", d);

                FetchExpression fetch = new FetchExpression(@"
                    <fetch distinct='false' mapping='logical'>
                      <entity name='" + context.PrimaryEntityName + "'><filter type='and'><condition attribute='createdon' value='" + d + "' operator='ne'></condition></filter><link-entity name='new_contrats' alias='nombreligne' from='new_contratsid' to='new_contratsid'><filter type='and'><condition attribute='new_contratsid' value='" + contrats.Id + "' operator='eq'></condition></filter></link-entity></entity></fetch>");

Any help would be great !

Answer 1

My blog posting here might help. Basically, UTC format but originating user's local offset may effect the underlying value in the database.

Answer 2

It may be easier to work in either Linq to CRM or Query Expressions rather than Fetch XML. You don't have to worry about the formatting since you're working with objects.