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LINQ to Dynamics GP 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 Dynamics GP Data Provider.

This article demonstrates how to use LINQ to access Dynamics GP tables through the CData ADO.NET Data Provider for Dynamics GP. 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 Dynamics GP Data Source".
  4. Enter your data source connection information.

    To authenticate set the User and Password connection properties.

    To connect set the URL to the Web services endpoint; for example, http://{servername}:{port}/Dynamics/GPService. Additionally, set CompanyId; you can obtain this value in the company setup window: Click Tools -> Setup -> Company.

    By default, data summaries are not returned to save performance. Set LookupIds to true to return details such as line items; however, note that entities must be retrieved one at a time.

    Below is a typical connection string:

    CompanyId=mycompanyId;user=myuser;password=mypassword;URL= http://{servername}:{port}/Dynamics/GPService;
  5. If saving your entity connection to App.Config, set an entity name. In this example we are setting DynamicsGPEntities 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, update, delete, and insert commands. For example:

DynamicsGPEntities context = new DynamicsGPEntities(); var salesinvoiceQuery = from salesinvoice in context.SalesInvoice select salesinvoice; foreach (var result in salesinvoiceQuery) { Console.WriteLine("{0} {1} ", result.Id, result.CustomerName); }

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