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Asked: 2026-05-11T09:31:03+00:00

I’m trying to use a discriminator field in my linq to sql setup. I

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I’m trying to use a discriminator field in my linq to sql setup. I have a base class called Inventory_Item which I have setup to be abstract and then many different services that inherit from it (e.g. BaseWash). Now the properties for the BaseWash association are

Base Class Discriminator Value    = 1 Derived Class Discriminator Value = 2 Discriminator Property = ItemCategoryID Inheritance Default = BaseWash

This builds fine but when it runs I get an exception in the designer code here:

public System.Data.Linq.Table<Inventory_Item> Inventory_Items {     get     {         return this.GetTable<Inventory_Item>();     } }

Abstract class ‘ICS.Core.Inventory_Item’ should not be assigned an inheritance discriminator key.

What am I doing wrong?

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1 Answer

  1. Since Inventory_Item is abstract, there is no way you can ever instantiate an Inventory_Item. So just clear the Base Class Discriminator Value – it can never be used. Or make the class non-abstract and leave it at 1.

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