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Rapidly create and deploy powerful .NET applications that integrate with Azure DevOps.

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LINQ to Azure DevOps Data


LINQ offers versatile querying capabilities within the .NET Framework (v3.0+), offering a straightforward method for programmatic data access through CData ADO.NET Data Providers. In this article, we demonstrate the use of LINQ to retrieve information from the Azure DevOps Data Provider.

This article illustrates using LINQ to access tables within the Azure DevOps via the CData ADO.NET Data Provider for Azure DevOps. 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 Azure DevOps Data Source".

  4. Enter your data source connection information.

    You can connect to your Azure DevOps account by providing the Organization and PersonalAccessToken.

    Obtaining a Personal Access Token

    A PersonalAccessToken is necessary for account authentication.

    To generate one, log in to your Azure DevOps Organization account and navigate to Profile -> Personal Access Tokens -> New Token. The generated token will be displayed.

    If you wish to authenticate to Azure DevOps using OAuth refer to the online Help documentation for an authentication guide.

    Below is a typical connection string:

    AuthScheme=Basic;Organization=MyAzureDevOpsOrganization;ProjectId=MyProjectId;PersonalAccessToken=MyPAT;InitiateOAuth=GETANDREFRESH
  5. If saving your entity connection to App.Config, set an entity name. In this example we are setting AzureDevOpsEntities 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:

AzureDevOpsEntities context = new AzureDevOpsEntities(); var buildsQuery = from builds in context.Builds select builds; foreach (var result in buildsQuery) { Console.WriteLine("{0} {1} ", result.Id, result.Id); }

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