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LINQ to SAP Business One 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 SAP Business One Data Provider.

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

    To authenticate to SAP Business One you must provide the Userand Passwordproperties.

    To connect to data, specify Url. This is your SAP Business One Service Layer root URL.

    Below is a typical connection string:

    Url=http://localhost:50000/b1s/v1;User=username;Password=password;CompanyDB=dbname;InitiateOAuth=GETANDREFRESH
  5. If saving your entity connection to App.Config, set an entity name. In this example we are setting SAPBusinessOneEntities 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:

SAPBusinessOneEntities context = new SAPBusinessOneEntities(); var ordersQuery = from orders in context.Orders select orders; foreach (var result in ordersQuery) { Console.WriteLine("{0} {1} ", result.Id, result.DocEntry); }

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