I recently upgraded from Entities Framework 5 to Entities Framework 6 Alpha 2 and I am getting the following error:
Method not found: \'System.Data.Ob
What worked for me was the following:
Install the dll 'Microsoft.AspNet.DataSource' with:
PM> Install-Package Microsoft.AspNet.EntityDataSource
Reference 'Microsoft.AspNet.DataSource.dll' in your project.
Added the following using declarations:
using System.Data.Entity.Core.Metadata.Edm;
using System.Data.Entity.Core.Objects;
using Microsoft.AspNet.EntityDataSource;
Removed the following using declarations:
using System.Data.Entity;
using System.Data.Metadata.Edm;
using System.Data.Objects;
using System.Web.UI.WebControls;
Voila, code is compiling and working.