Using an OData web service
As you previously learned, a page web service has also an OData URL.
Let's learn how to use OData web service by performing the following steps:
To use an OData web service, we need to reference it in our Visual Studio by going to the project name in Solution Explorer, right-clicking on it, and navigating to Add | Service Reference…:

In the Add Service Reference window, add the OData service URL at
http://servername:port/NAVInstance/OData/.servernameis the name (or IP address) of your NAV server,portis the OData web service port, andNAVInstanceis the name of your NAV instance.In this sample, our service URL is
http://VMEID31:7048/DynamicsNAV90/OData/.Give a friendly namespace for the service (in this sample, we use
NAVODATA):
Now you can use the ODATA service in your application. First, add a reference to:
using System.Data.Services.Client;
Then set the ODATA service URL by reading it from your
app.configfile:string serviceUri = ...