Exception when loading related objects. Entity Framework

Question

I am getting an exception when loading related objects in my db. I am loading all my MatchData objects and I want to iterate them with a foreach.

The ob

Answer 1

The inner exception says it all:

The class 'Boonekamp.ClassCollection.PlayerData' has no parameterless constructor

Change your PlayerData to:

[Obsolete("Only needed for serialization and materialization", true)]
public PlayerData() {}

public PlayerData(Player player)
{
}

This way, you do have a parameter-less constructor that Entity Framework will be able to use during initialization. Yet, you prevent using that constructor in code using the [Obsolete] attribute.