Entity Framework "Problem in Mapping Fragments" Error
If you add an entity to the Entity Data Model, then later add another entity that is related in the database to the first entity, Visual Studio will give you a “Problem in Mapping Fragments” error. For example, if you add a Northwind database Orders table using the EDM Update Wizard, it produces an entity that looks has an EmployeeID property that corresponds to the EmployeeID foreign key column of the Orders table. Next, if you add a Northwind database Employees table using the EDM Update Wizard, an Employees property gets added to the bottom of the Orders entity under … Continue reading Entity Framework "Problem in Mapping Fragments" Error