EntityFramework Schema specified is not valid

Question

I know this question was already asked but it seams that my case might be slightly different. I tried the "run custom tool" but here's where the strange thing happens: Because i'm having 2 related databases (so 2 related models). If i'm running the custom tool on one model it screws up the other and vice-versa(incomplete .cs files, missing, etc.). Does anyone have any ideea where i'm going wrong?

EDIT:

the complete error:

An exception of type 'System.Data.Entity.Core.MetadataException' occurred in EntityFramework.dll but was not handled in user code

Additional information: Schema specified is not valid. Errors:

The relationship 'ProductionMasterDataEntityModel.FK_ProductGroup_CostPeriods' was not loaded because the type 'ProductionMasterDataEntityModel.ProductGroup' is not available.

The following information may be useful in resolving the previous error:

The required property 'CstAveOrderQty' does not exist on the type 'SISCOM.Persistance.Models.ProductGroup'.

The custom tool is: TextTemplatingFileGenerator

I'm not sure if it has anything to do with the asp.net framework but it is an asp.net project so i thought it's worth mentioning.

Answer 1

in my case, this Issue came after I update .edmx file. Remove all the tables on it and re-update it.right click on .tt file(Eg. Entity.tt) file->Run custom tools. then my issue solved.

Answer 2

Drop the model from edmx and add it again should sort it out. Note this cannot be reverted unless using source control tools.

Answer 3

It seams that i had 2 problems contributing to that error.. First, there were some stored procedures and views, after i got that out of the way (deleted my models, created them again and i've unchecked the option to include the stored procedures and i only added the tables to the model, no views and no stored procedures) i could access some data but not all of it.. The second problem was that i forgot to add a connection to the dependent database.

So the methods in my repository look like this:

public myType GetSomething()
{
 var db = new model();
 var dependencyDb = new dependencyModel();
 //do whatever needs to be done with the data before presenting it
 return something;
}

PS.. i didn't had to explicitly take it to the needed table, after i added the connection it found all that it needed by itself.

Hope this helps anyone having this problem.

Answer 4

I solve this case like below.

Entity in class lib project and i was try to consume in other project. So in that project i have add reference "EntityFramework.SqlServer.dll" in new project.

Answer 5

Schema specified is not valid. Errors: MyModel.ssdl(2,2) : error 0152: No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlClient'. Make sure the provider is registered in the 'entityFramework' section of the application config file. See http://go.microsoft.com/fwlink/?LinkId=260882 for more information.