使用流利的api在实体框架中进行一对多映射

Question

I find many examples about this but no one works for me...

I have principal class:

public class Class1
{
    public int id { get; set; }
    public string desc { get; set; } 
    public virtual Class2 class2 {get; set;}
}

and the second class:

public class Class2
{
    public int id { get; set; }
    public string desc { get; set; } 
}

I am mapping Class1 in this way

public class Class1Map : EntityTypeConfiguration<Class1>
{
    public Class1Map()
    {
        // Primary Key
        this.HasKey(t => t.Id);

        // Table & Column Mappings
        this.ToTable("Class1TableName");
        this.Property(t => t.id).HasColumnName("IdColumnName");
        this.Property(t => t.desc).HasColumnName("DescColumName");
    }
}

and this works well

but I try many ways to bind Class2 property of Class1 to IdClass2ColumnName field of Class1Tablename as foreign key linked to IdColumnName of Class2 table without success.

As you can see I don't want to put also IdClass2 property in Class1

For testing I tried without success:

this.HasRequired(t => t.class2)
    .WithRequiredPrincipal()
    .Map(m => m.MapKey("IdClass2ColumnName "));


this.HasRequired(t => t.class2)
    .WithMany()
    .Map(m => m.MapKey("IdClass2ColumnName"));

Answer 1

Solved, was a problem in code migration, I forget to update code migration class and so EF use old column name.

The correct mapping syntax is

this.HasRequired(t => t.class2)
    .WithRequiredDependent()
    .Map(m => m.MapKey("IdClass2ColumnName "));