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LINQ to SAP ByDesign 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 ByDesign Data Provider.

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

    Set the following connection properties to connect to SAP ByDesign.

    • Url: Set this to the Url of your SAP ByDesign site. For example, https://test.sapbydesign.com
    • User: Set this to the username of your account.
    • Password: Set this to the password of your account.
    • CustomService or AnalyticsService: Only one of these must be specified. If you have a custom service you want to retrieve data from, specify CustomService. If you want to retrieve the reports of a analytical service, specify AnalyticsService.
      If neither is specified, 'cc_home_analytics.svc' will used as a default for the AnalyticsService property. If you are not sure what service to specify, you can always query the Services view to list available services.

    Below is a typical connection string:

    URL=https://my999999.sapbydesign.com;User=username;Password=password;CustomService=servicename;
  5. If saving your entity connection to App.Config, set an entity name. In this example we are setting SAPByDesignEntities 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:

SAPByDesignEntities context = new SAPByDesignEntities(); var [inventory balance]Query = from [inventory balance] in context.[Inventory Balance] select [inventory balance]; foreach (var result in [inventory balance]Query) { 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.