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LINQ to SAP Concur 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 SAP Concur Data Provider.
This article illustrates using LINQ to access tables within the SAP Concur via the CData ADO.NET Data Provider for SAP Concur. 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.
- 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.
- Choose EF Designer from Database and click Next.
- Add a new Data Connection, and change your data source type to "CData SAP Concur Data Source".
Enter your data source connection information.
SAP Concur uses the OAuth 2 authentication standard. You will need to obtain the OAuthClientId and OAuthClientSecret by registering an app with SAP Concur. See the Getting Started section of the help documentation for an authentication guide.
Below is a typical connection string:
OAuthClientId=MyOAuthClientId;OAuthClientSecret=MyOAuthClientSecret;InitiateOAuth=GETANDREFRESH- If saving your entity connection to App.Config, set an entity name. In this example we are setting SAPConcurEntities as our entity connection in App.Config.
- 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:
SAPConcurEntities context = new SAPConcurEntities();
var departmentsQuery = from departments in context.Departments
select departments;
foreach (var result in departmentsQuery) {
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.
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