entity-framework 5 initialize not null properties on createObject - entity-framework-5

Question

I'm getting a problem when creating an instance of an entity in entity framework 5.
I'm creating it by reflection:
var method = this.objectContextinstance().GetType().GetMethod("CreateObject");
method = method.MakeGenericMethod(Type.GetType("PERSON"));
var entity = method.Invoke(this.objectContextinstance(), null);
the problem is that the not null properties are being initialized with zero, and i don't want it to.
The reason is that if i save it, it makes a reference to another object that key is zero creating wrong data.
is there a way of creating an instance and it not automatically set the non null properties or is there a configuration to set the not null properties to a value like '-1'?
The problem i mention happens creating a instance of some entity by the "new" clause.
I'm using DataBase First approach.
Any help would be appreciated! Thanks in advance!

Answer 1

To solve this problem, I set all of the properties to a default value after creation:
public void InitializeCreatedEntity(object entity)
{
Type tipoObj = entity.GetType();
string nomeEntidade = GetNomeEntidade(entity);
foreach (EntityType entityType in EntityTypes)
{
if (entityType.Name.Equals(nomeEntidade))
{
foreach (EdmProperty property in entityType.Properties)
{
if (!property.Nullable)
{
PropertyInfo info = tipoObj.GetProperty(property.Name);
switch (property.TypeUsage.EdmType.Name)
{
case "String": info.SetValue(entity, "", null);
break;
case "Int32": info.SetValue(entity, DefaultInt, null);
break;
case "Int64": info.SetValue(entity, DefaultInt, null);
break;
case "Int16": info.SetValue(entity, DefaultInt, null);
break;
case "Binary": Byte[] initByteArray = { };
info.SetValue(entity, initByteArray, null);
break;
case "DateTime": info.SetValue(entity, DateTime.Now, null);
break;
}
}
}
}
}
}