LINQ to ServiceDesk Plus Data

This article illustrates using LINQ to access tables within the ServiceDesk Plus via the CData ADO.NET Data Provider for ServiceDesk Plus. To achieve this, we will use LINQ to Entity Framework, which facilitates the generation of connections and can be seamlessly employed with any CData ADO.NET Data Providers to access data through LINQ.

See the help documentation for a guide to setting up an EF 6 project to use the provider.

1. In a new project in Visual Studio, right-click on the project and choose to add a new item. Add an ADO.NET Entity Data Model.
2. Choose EF Designer from Database and click Next.
3. Add a new Data Connection, and change your data source type to "CData ServiceDesk Plus Data Source".

4. Enter your data source connection information.

   Using OAuth Authentication

   ServiceDeskPlus uses Zoho OAuth 2.0 for secure authentication. To set up OAuth access:

   1. Register your application in the Zoho Developer Console at https://api-console.zoho.com
   2. Configure your redirect URI to match your application setup
   3. Note your Client ID and Client Secret from the application settings

   After setting the following connection properties, you are ready to connect:

   • AuthScheme: Set this to OAuth.
   • OAuthClientId: Set this to your Zoho application Client ID.
   • OAuthClientSecret: Set this to your Zoho application Client Secret.
   • Scope: Set this to the required ServiceDeskPlus permissions (default includes read access to requests, problems, assets, and projects).
   • Domain: Set this to your ServiceDeskPlus domain
   • Portal: Set this to your ServiceDeskPlus portal

   Example Connection String

   Profile=C:\profiles\ServiceDeskPlus.apip;ProfileSettings="Portal=itdesk;Domain=.in;Scope=SDPOnDemand.requests.READ SDPOnDemand.problems.READ SDPOnDemand.assets.READ SDPOnDemand.projects.READ";AuthScheme=OAuth;OAuthClientId=your_client_id;OAuthClientSecret=your_client_secret;
   

   Below is a typical connection string:

   Profile=C:\profiles\ServiceDeskPlus.apip;ProfileSettings="Portal=itdesk;Domain=.in;Scope=SDPOnDemand.requests.READ SDPOnDemand.problems.READ SDPOnDemand.assets.READ SDPOnDemand.projects.READ";AuthScheme=OAuth;OAuthClientId=your_client_id;OAuthClientSecret=your_client_secret;


5. If saving your entity connection to App.Config, set an entity name. In this example we are setting APIEntities as our entity connection in App.Config.
6. Enter a model name and select any tables or views you would like to include in the model.

Using the entity you created, you can now perform select commands. For example:

APIEntities context = new APIEntities();

var announcementcommentsQuery = from announcementcomments in context.AnnouncementComments
  select announcementcomments;

foreach (var result in announcementcommentsQuery) {
  Console.WriteLine("{0} {1} ", result.Id, result.);
}

See "LINQ and Entity Framework" chapter in the help documentation for example queries of the supported LINQ.