EF Migration Clear Cache - entity-framework

Question

public class A
{
public int Id { get; set; }
public virtual ICollection<AHistory> AHistorys { get; set; }
}
public class AHistory
{
public int AId { get; set; }
public virtual A A {get; set; }
}
I renammed AHistories to AHistory.
add-migration HistoMig
AHistories: EntityType: EntitySet 'AHistories' is based on type 'AHistory' that has no keys defined.
So the error mention an old name that no longer exists in the solution.
What should I do ?
I've already clean Visual Studio Solution with no effects.
I also tried to comment out navigation property, add migration, rollback migration, uncomment then add migration ; I still get this erros.
I've done a search through VS solution on String "AHistories" with 0 occurence found.

Answer 1

Based on ESG comment, I've added :
public class DefaultContext : DbContext
{
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Configurations.Add(new AHistoryMapping());
public DbSet<AHistory> AHistorys { get; set; }
}
}
public class AHistoryMapping : EntityTypeConfiguration<AHistory>
{
public AHistoryMapping()
{
HasKey(ah => ah.AId);
}
}
It works now !
Edit
Actually it doesn't "work"... It compiles but the result is not what I was expecting.
This code creates a table with a unique identifier named FundId and a foreign key named Fund_Id.
I've change my code to
public class AHistoryMapping : EntityTypeConfiguration<AHistory>
{
public AHistoryMapping()
{
HasRequired(ah => ah.A)
.WithMany(a => a.AHistorys)
.HasForeignKey(ah => ah.AId);
}
}
It doesn't compile anymore. I get the message again.
AHistory: : EntityType 'AHistory' has no key defined. Define the key for this EntityType.
AHistorys: EntityType: EntitySet 'AHistorys' is based on type 'AHistory' that has no keys defined.
Edit 2
It turns out that EF require a Primary Key. Here is the solution :
public class AHistoryMapping : EntityTypeConfiguration<AHistory>
{
public AHistoryMapping()
{
HasKey(ah => new { ah.AId, Ah.Date });
HasRequired(ah => ah.A)
.WithMany(a => a.AHistorys)
.HasForeignKey(ah => ah.AId);
}
}