Category: .NET

09 Jun 2016 22:15

Joined:	29/05/2009
Level:	Gold
Points:	10380

Points:	5

How to Fixed This Context Conversion issue

Hi

I have created student class in MVC then related created StudentContext also
created successfully. But when I Created Controller I meet this issue any one fixed this issue.

This is Error




---------------------------
Microsoft Visual Studio
---------------------------
Unable to retrieve metadata for 'Code_First_Approach_in_Entity_Framework.Models.Student'. 
Unable to cast object of type 'System.Data.Entity.Core.Objects.ObjectContext' to type 'System.Data.Objects.ObjectContext'.
---------------------------
OK   
---------------------------

#766502

16 Jun 2016 08:40

Joined:	08/07/2010
Level:	Gold
Points:	6482

Points:	2

Looks like this is a entity framework version issue. Which version of entity framework are you using in your application. I think you need to use entity framework 5 or below versions for the code to work.

Miss. Jain
Microsoft Certified Technology Specialist in .Net

#766514

17 Jun 2016 02:04

Joined:	15/12/2015
Level:	Gold
Points:	1308

Points:	3

Hi,
It seems you are using a version of MVC which is targeting an older Entity Framework version.
Try upgrade MVC or downgrade your Entity Framework.


VS Tools-->NuGet package manager-->Package manager console
PM> uninstall-Package EntityFramework -version 6.1.1
Press Enter
PM> Install-Package EntityFramework -Version 5.0.0 
Press Enter

#766612

21 Jun 2016 05:01

Joined:	13/06/2007
Level:	Gold
Points:	21327

Points:	3

which version of MVC you are using ? I think your current version does not support Scaffolding Wizard
see below work around
Command
1.Open an empty MVC Solution
2.Open your Package manager console
3.Type this command (Install-Package EntityFramework -Version 5.0.0 )

Default Framework
Select an internet application option of the ASP.NET MVC project template on Visual Studio 2012. By default Entity framework 5 came with it so there is no need to run your package manager console again.

Thanks
Koolprasd2003
Editor, DotNetSpider MVM
Microsoft MVP 2014 [ASP.NET/IIS]

How to Fixed This Context Conversion issue

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