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Rapidly create and deploy powerful .NET applications that integrate with live Excel Spreadsheet content hosted on SharePoint server!

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LINQ to SharePoint Excel Services 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 SharePoint Excel Services Data Provider.

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

  4. Enter your data source connection information.

    The URL, User, and Password properties, under the Authentication section, must be set to valid credentials for SharePoint Online, SharePoint 2010, or SharePoint 2013. Additionally, the Library property must be set to a valid SharePoint Document Library and the File property must be set to a valid .xlsx file in the indicated Library.

    Below is a typical connection string:

    URL=https://myorg.sharepoint.com;User=admin@myorg.onmicrosoft.com;Password=password;File=Book1.xlsx;
  5. If saving your entity connection to App.Config, set an entity name. In this example we are setting ExcelServicesEntities 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:

ExcelServicesEntities context = new ExcelServicesEntities(); var accountQuery = from account in context.Account select account; foreach (var result in accountQuery) { Console.WriteLine("{0} {1} ", result.Id, result.Name); }

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