Monthly Archives: June 2016

Entity framework – Unable to load the specified metadata resource

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If you are using entity framework and gets the following error message “Unable to load the specified metadata resource” while trying to fetch some data from a database. You can see what cause this message and how to solve it.

(Additional error message)
System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoaderCompositeResource.LoadResources(String assemblyName, String resourceName, ICollection`1 uriRegistry, MetadataArtifactAssemblyResolver resolver)

The error message says that it can’t read the meta data that is used by entity framework. The meta data is specified in the connection string like this: “metadata=res://*/[NAME].[NAME].csdl|res://*/[NAME].[NAME].ssdl|res://*/[NAME].[NAME].msl”. If any of the names / paths have changed or doesn’t match the DB Entity model name the meta data can’t be read.

Database entity model was generated with warnings or errors (asp.net)

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Got some errors when trying to generate a DB entity model for a ASP.net MVC website. The error message was “The model was generated with warnings or errors. Please see the Error List for more details. These issues must be fixed before running your application”.

This turned to be caused by some tables that was lacking a primary key. Once a primary key was set on these tables the model could be generated successfully.