LINQ to SharePoint Data

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SharePoint ADO.NET Provider

Provides .NET developers with the power to easily connect their Web, Desktop, and Mobile applications to data in SharePoint Server Lists, Contacts, Calendar, Links, Tasks, and more!



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 SharePoint Data Provider.

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

    Set the URL property to the base SharePoint site or to a sub-site. This allows you to query any lists and other SharePoint entities defined for the site or sub-site.

    The User and Password properties, under the Authentication section, must be set to valid SharePoint user credentials when using SharePoint On-Premise.

    If you are connecting to SharePoint Online, set the SharePointEdition to SHAREPOINTONLINE along with the User and Password connection string properties. For more details on connecting to SharePoint Online, see the "Getting Started" chapter of the help documentation

    Below is a typical connection string:

    User=myuseraccount;Password=mypassword;Auth Scheme=NTLM;URL=http://sharepointserver/mysite;SharePointEdition=SharePointOnPremise;
  5. If saving your entity connection to App.Config, set an entity name. In this example we are setting SharePointEntities 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:

SharePointEntities context = new SharePointEntities(); var mycustomlistQuery = from mycustomlist in context.MyCustomList select mycustomlist; foreach (var result in mycustomlistQuery) { 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.