Collection serialization expression 'contains'

[mc-ren]

So unless I am doing something wrong, this looks like it's the same issue assafw is seeing (#53 below). I have the following:

            var enterpriseKeys = new List<long?> { 1, 2, 3, 4 };

            var predicatePart =
                (Expression<Func<GroupEntity, bool>>)
                (groupType =>
                 enterpriseKeys.Contains(groupType.GroupEnterpriseKey));

            var serializeTo = new ExpressionSerializer(new XmlSerializer());
            var predicatePartSerializedToString = serializeTo.SerializeText(predicatePart);

I get the error as follows:

Error converting type: Type 'System.Collections.Generic.List1[[System.Nullable1[[System.Int64, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]' with data contract name 'ArrayOfNullableOflong:http://schemas.datacontract.org/2004/07/System' is not expected.

Consider using a DataContractResolver or add any types not known statically to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding them to the list of known types passed to DataContractSerializer.

[esskar]

Thanks for that. I fixed it. See Unit Test for your Issue: https://github.com/esskar/Serialize.Linq/blob/master/src/Serialize.Linq.Tests/Issues/Issue56.cs