Update on Parent Table with ado.net entity framework with domain services

Question

When I update a Employee I get an exception

"A referential integrity constraint violation occurred: The property values that define the referential constraints are not consistent between principal and dependent objects in the relationship."

My code receives an Employee , attaches to the context and save changes.

public void UpdateRAD_Tbl_OrderPatient(Employee emp)
{
    try
    {
        this.ObjectContext.RAD_Tbl_OrderPatient.AttachAsModified(emp);
        this.ObjectContext.SaveChanges();
        this.ObjectContext.AcceptAllChanges();
    }
    catch(Exception ex)
    {
    }
}

The exception happens when a Foreign Key is changed on this object.

How can I attach the object changing this Foreign Key?

Answer 1

您可以查找Key实体并将Employee添加到Key.Employee并保存更改，而不仅仅是附加和保存。