Weird - "The EntityReference object could not be serialized" when serializing from an ASP.NET Web Si
- by Mikey Cee
I have an Entity Framework data model. Part of the model is a Customer entity. The web service provides a method to get a customer, and to receive an updated version of this customer to be persisted.
To test this, I created a new ASP.NET web Application, (Solution Add New Project ASP.NET Web Application), then added a reference to my service reference using the standard Add Service Reference dialog. I then call the service using the following code:
var client = new CustomerServiceClient();
var customer = client.GetCustomerByID(18); // get it
customer.LimitDown = 100; // change it
client.SaveCustomer(customer); // persist it
Everything works as expected.
Now, I do exactly the same thing, but this time with as ASP.NET Web Site (Solution Add New Web Site ASP.NET Web Site). I add the reference in a similar fashion and copy and paste the code above into the new site. But now I get the following exception thrown on the 4th line:
System.InvalidOperationException The
EntityReference object could not be
serialized. This type of object cannot
be serialized when the
RelationshipManager belongs to an
entity object that does not implement
IEntityWithRelationships.
Source Error:
Line 2474: Line 2475:
public
SkyWalkerCustomerService.OperationResult
SaveCustomer(SkyWalkerCustomerService.Customer
customer) { Line 2476:
return
base.Channel.SaveCustomer(customer);
Line 2477: } Line 2478: }
Stack Trace:
System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage
reqMsg, IMessage retMsg) +9475203
System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData&
msgData, Int32 type) +345
SkyWalkerCustomerService.ICustomerService.SaveCustomer(Customer
customer) +0
SkyWalkerCustomerService.CustomerServiceClient.SaveCustomer(Customer
customer) in
c:\Windows\Microsoft.NET\Framework\v4.0.30128\Temporary
ASP.NET
Files\testsite2\dd2bcf8d\f95604ff\App_WebReferences.fz4h7x7l.0.cs:2476
_Default.Page_Load(Object sender, EventArgs e) in
c:\Users\Mike\Documents\Repositories\UWC\SkyWalker\TestSite2\Default.aspx.cs:17
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr
fp, Object o, Object t, EventArgs e)
+14 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object
sender, EventArgs e) +35
System.Web.UI.Control.OnLoad(EventArgs
e) +91
System.Web.UI.Control.LoadRecursive()
+61 System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean
includeStagesAfterAsyncPoint) +1966
Googling for this error returns very little. Why doesn't this work?
