Question

Im using mono(3.0.3) on a raspberry pi. Everything is working properly except entity framework. I can login with no problem into my site but the second I enter an area where there is entity framework i get the following error with XSP:

Application Exception
System.InvalidProgramException
Invalid IL code in System.Data.Objects.ObjectContext:.ctor (string,string): method body is empty.

Description: HTTP 500.Error processing request.
Details: Non-web exception. Exception origin (name of application or object): AdwenModel.
Exception stack trace:
  at AdwenModel.AdwenEntities1..ctor (System.String connectionString) [0x00000] in <filename unknown>:0 
  at AdwenWeb.App_Code.AdwenConnection.getDataContextAdwen () [0x00000] in <filename unknown>:0 
  at AdwenWeb.Management.overview.createObjectTable () [0x00000] in <filename unknown>:0 
  at AdwenWeb.Management.overview.Page_Load (System.Object sender, System.EventArgs e) [0x00000] in <filename unknown>:0 
  at System.Web.UI.Control.OnLoad (System.EventArgs e) [0x00029] in /opt/mono-3.0/mono/mcs/class/System.Web/System.Web.UI/Control.cs:1211 
  at System.Web.UI.Control.LoadRecursive () [0x00031] in /opt/mono-3.0/mono/mcs/class/System.Web/System.Web.UI/Control.cs:1641 
  at System.Web.UI.Page.ProcessLoad () [0x0004a] in /opt/mono-3.0/mono/mcs/class/System.Web/System.Web.UI/Page.cs:1490 
  at System.Web.UI.Page.ProcessPostData () [0x0004d] in /opt/mono-3.0/mono/mcs/class/System.Web/System.Web.UI/Page.cs:1475 
  at System.Web.UI.Page.InternalProcessRequest () [0x001bf] in /opt/mono-3.0/mono/mcs/class/System.Web/System.Web.UI/Page.cs:1442 
  at System.Web.UI.Page.ProcessRequest (System.Web.HttpContext context) [0x00062] in /opt/mono-3.0/mono/mcs/class/System.Web/System.Web.UI/Page.cs:1269 
Version Information: 3.0.3 (master/c1b505c Thu Dec 6 09:17:47 UTC 2012); ASP.NET Version: 4.0.30319.17020

Don’t really know what else could be wrong.

Answer 1

I don’t know much about the Entity Framework support in Mono but what I do know is that they have included EF6 in Mono, and System.Data.Objects is no longer the namespace for ObjectContext in EF6. Whatever is causing the failure should be looking for System.Data.Entity.Core.Objects.ObjectContext instead.

Hope this helps.