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Rapidly create and deploy powerful .NET applications that integrate with DocuSign data including Accounts, Envelopes, Folders, and more!

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LINQ to DocuSign 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 DocuSign Data Provider.

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

  4. Enter your data source connection information.

    To connect to DocuSign, set the following connection properties:

    • UseSandbox: indicates whether current user account is sandbox or not (FALSE by default)
    • AccountId (optional): set it in the connection string if you have access to multiple Account Ids

    Authenticating to DocuSign

    DocuSign uses the OAuth authentication standard. To authenticate using OAuth, you will need to create an app to obtain the OAuthClientId, OAuthClientSecret, and CallbackURL connection properties. See the Help documentation more information.

    Below is a typical connection string:

    OAuthClientId=MyClientId; OAuthClientSecret=MyClientSecret; CallbackURL=http://localhost:33333; InitiateOAuth=GETANDREFRESH
  5. If saving your entity connection to App.Config, set an entity name. In this example we are setting DocuSignEntities 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:

DocuSignEntities context = new DocuSignEntities(); var documentsQuery = from documents in context.Documents select documents; foreach (var result in documentsQuery) { Console.WriteLine("{0} {1} ", result.Id, result.DocumentId); }

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