Has anyone worked on filter expression from xConnect, which filters contacts based on custom facet property (modified in last 24hrs)?

We have written a custom converter and expression fro the same


Protected override ConvertResult<IEntityExpressionBuilder> ConvertSupportedItem(ItemModel source)
        var convertResult = ConverttoDateTime(this.GetDateTimeValue(source,"ModifiedOn"));
        if (!convertResult.WasConverted)
            return NegativeResult(source, $"Cannot convert GUID condition expression to expression type.");
        var expressionBuilder = new FacetPropertyModifiedOnExpression(convertResult.ConvertedValue,
        return PositiveResult(expressionBuilder);}

Since ModifiedOn is a Datetime, we could not get a Converter which would solve the purpose, so we had to take ConverttoDateTime(this.GetDateTimeValue(source,"ModifiedOn")) ConverttoDateTime doesn’t do anything in specific it returns a positive result.

Custom Expression

        var left = Expression.Property(getFacetExpression, this.FacetPropertyName);
        var daybefore = Expression.Constant(DateTime.UtcNow.AddDays(-1));
        var daynow = Expression.Constant(DateTime.UtcNow);
        var ex1 =Expression.GreaterThanOrEqual(Expression.Convert(left, typeof(DateTime)), daybefore);
        var ex2 = Expression.LessThan(Expression.Convert(left, typeof(DateTime)), daynow);
        var finalexpression = Expression.AndAlso(ex1, ex2);
        var exp1 = Expression.Lambda<Func<TEntity, bool>>(finalexpression, pe);

The result of exp1 is {entity => ((Convert(entity.GetFacet("DynamicsCrm").ProfileLastUpdatedOn) >= 6/9/2019 10:27:59 AM) AndAlso (Convert(entity.GetFacet("DynamicsCrm").ProfileLastUpdatedOn) < 6/10/2019 10:27:59 AM))} which seems to be correct.

With the above two custom code, it doesn't sync the leads/contacts in the past 24 hrs.

Kindly help

2 Answers 2


You can use the example below to filter on the date of a date field in your facet. Im my example, my membership facet has a Registration property with a RegistrationDate date property I am filtering on.

using (XConnectClient client = SitecoreXConnectClientConfiguration.GetClient())

    var queryable = client.Contacts
        .Where(x => x.GetFacet<MembershipFacet>(MembershipFacet.DefaultFacetKey).Registration.RegistrationDate > DateTime.Now.AddDays(-1))
        .WithExpandOptions(new ContactExpandOptions(MembershipFacet.DefaultFacetKey));

    var contacts = await queryable.GetBatchEnumerator(20);

    while (await contacts.MoveNext())
       // do you stuff

If you are looking for pure "When was this data saved" like an interaction, you can use the data extraction query. https://doc.sitecore.com/developers/91/sitecore-experience-platform/en/extracting-contacts-and-interactions.html


The problem is that Convert is part of your expression, so it falls into the custom method calls limitations.

Below an example of an expression that works:

var expression = Expression.Lambda<Func<Contact, bool>>(
        Expression.Property(Expression.Call(contact, "GetFacet", new[] { typeof(EngagementMeasures) }), "MostRecentInteractionStartDateTime"),

A good way to work it out is to begin by a linq expression and to see in the debugger how it looks. For example, I was checking the above like this:

Expression<Func<Contact, bool>> expression = c => c.GetFacet<EngagementMeasures>().MostRecentInteractionStartDateTime > DateTime.UtcNow;

Notice there is no overload of GetFacet without the generics argument: enter image description here

That is important, since its what allows the system to know the type of the property in this expression is DateTime:

Expression.Property(Expression.Call(contact, "GetFacet", new[] { typeof(EngagementMeasures) }), "MostRecentInteractionStartDateTime")

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.