PointCollection not serializable with NetDataContractSerializer

RyanCooney — Wed, 31 Mar 2010 15:21:39 GMT

Geometry objects are DataContracts and can be serialized with the regular DataContractSerializer, but if you try to use the System.Runtime.Serialization.NetDataContractSerializer it will fail because it requires the PointCollection type to be marked as a data contract (which it is not).

// Create a geometry
Polyline polyline = new Polyline();
PointCollection points = new PointCollection();
points.Add(new MapPoint(0, 0));
points.Add(new MapPoint(1, 1));
polyline.Paths.Add(points);

// Serialize it
NetDataContractSerializer serializer = new NetDataContractSerializer();
using (System.IO.MemoryStream stm = new System.IO.MemoryStream())
{
     serializer.Serialize(stm, polyline);
}

Produces this error:
System.Runtime.Serialization.InvalidDataContractException occurred. Message=Type 'ESRI.ArcGIS.Client.Geometry.PointCollection' cannot be serialized. Consider marking it with the DataContractAttribute attribute, and marking all of its members you want serialized with the DataMemberAttribute attribute. If the type is a collection, consider marking it with the CollectionDataContractAttribute.

It would be great to have full support for this in the final version. Thanks,

--Ryan

topic PointCollection not serializable with NetDataContractSerializer in ArcGIS API for Silverlight Questions

PointCollection not serializable with NetDataContractSerializer