WCF Service - runtime not seeing the ServiceContract on Interface - wcf

Question

I'm new to WCF and trying to get my first service running. I'm close but stuck on this problem.
In my interface definition file, I have this:
[ServiceContract(Namespace="http://mysite.com/wcfservices/2009/02")]
public interface IInventoryService
{
[OperationContract]
string GetInventoryName(int InventoryID);
}
Then I have my class file (for the service) that inherits it:
public class InventoryService : IInventoryService
{
// This method is exposed to the wcf service
public string GetInventoryName(int InventoryID)
{
return "White Paper";
}
Finally, in my Host project I have this:
ServiceHost host = new ServiceHost(typeof(Inventory.InventoryService));
host.AddServiceEndpoint(typeof(Inventory.InventoryService), new NetTcpBinding(),
"net.tcp://localhost:9000/GetInventory");
host.Open();
Everything compiles fine, and when the host goes to add the service endpoint, it bombs with this: "The contract type Inventory.InventoryService is not attributed with ServiceContractAttribute. In order to define a valid contract, the specified type (either contract interface or service class) must be attributed with ServiceContractAttribute."
I know I'm missing something simple here. I have the interface clearly marked as a service contract and there's a reference to that project in the Host project.

Answer 1

ServiceHost host = new ServiceHost(typeof(Inventory.InventoryService));
host.AddServiceEndpoint(typeof(Inventory.InventoryService), new NetTcpBinding(),
"net.tcp://localhost:9000/GetInventory");
host.Open();
If your ServiceContract attribute is on the Interface not the concrete class, try the following:
ServiceHost host = new ServiceHost(typeof(Inventory.InventoryService));
host.AddServiceEndpoint(typeof(Inventory.IInventoryService), new NetTcpBinding(),
"net.tcp://localhost:9000/GetInventory");
host.Open();