How do I cast to an object that can be used in EF

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casting

entity-framework

Hi there,

I have a problem where I am using entity framework to update and create a Music table. I have a testing project where i built the entity using a builder class called MusicBulider. The builder class inherits the Music model.

When I try and create the class and update via EF, I get an error as the EF cannot handle the builder class.

Is there a way where I can cast the Builder class into the Object that I want to update? Everytime I try and run my test I get the following error.

An exception of type 'system.InvalidOperationException' occured in EntityFramework.dll but was not handled in user code.

Additional information: Mapping and metadata information could not be found for entity type 'TestRate.Tests.MusicBuilder'

I hope I have given enough information.

Thanks in advance.