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LINQ to YouTube Data

LINQ provides general-purpose query facilities in .NET Framework 3.0 and above and provides one easy way to programmatically access data through from CData ADO.NET Data Providers. This example uses LINQ to access information from the YouTube Data Provider.

This article demonstrates how to use LINQ to access YouTube tables through the CData ADO.NET Data Provider for YouTube. To do this you will LINQ to Entity Framework, which is used to generate the connection and can be used with any CData ADO.NET Data Providers to access data via 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 YouTube Data Source".
  4. Enter your data source connection information.

    YouTube uses the OAuth authentication standard. To access Google APIs on behalf on individual users, you can use the embedded CData credentials or you can register your own OAuth app.

    OAuth also enables you to use a service account to connect on behalf of users in a Google Apps domain. To authenticate with a service account, you will need to register an application to obtain the OAuth JWT values.

  5. If saving your entity connection to App.Config, set an entity name. In this example we are setting YouTubeEntities 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:

YouTubeEntities context = new YouTubeEntities(); var videosQuery = from videos in context.Videos select videos; foreach (var result in videosQuery) { Console.WriteLine("{0} {1} ", result.Id, result.Title); }

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