IsDefaultEntityContainer in OData metadata

Question

When I generate my EdmModel using Microsoft.Data.OData.dll, v5.6.1.0 as follows:

var eModel = new Microsoft.Data.Edm.Library.EdmModel();
var container = new EdmEntityContainer("namespace...", "container1");
var eRowType = ...;
eModel.AddElement(eRowType);
var eSet = container.AddEntitySet("...", eRowType);
eModel.AddElement(container);

and then generate the metadata with

ODataMessageWriter payloadWriter = new ODataMessageWriter(payloadResponse, settings, eModel);
payloadWriter.WriteMetadataDocument();

I get xml that does not have IsDefaultEntityContainer="true". Some OData libraries require that attribute. How can I add it?

Answer 1

You can try the SetIsDefaultEntityContainer() method:

eModel.AddElement(container);

eModel.SetIsDefaultEntityContainer(container, true);