Method not being resolved for dynamic generic type
- by kelloti
I have these types:
public class GenericDao<T>
{
public T Save(T t)
{
return t;
}
}
public abstract class DomainObject {
// Some properties
protected abstract dynamic Dao { get; }
public virtual void Save() {
var dao = Dao;
dao.Save(this);
}
}
public class Attachment : DomainObject
{
protected dynamic Dao { get { return new GenericDao<Attachment>(); } }
}
Then when I run this code it fails with RuntimeBinderException: Best overloaded method match for 'GenericDAO<Attachment.Save(Attachment)' has some invalid arguments
var obj = new Attachment() { /* set properties */ };
obj.Save();
I've verified that in DomainObject.Save() "this" is definitely Attachment, so the error doesn't really make sense. Can anyone shed some light on why the method isn't resolving?
Some more information - It succeeds if I change the contents of DomainObject.Save() to use reflection:
public virtual void Save() {
var dao = Dao;
var type = dao.GetType();
var save = ((Type)type).GetMethod("Save");
save.Invoke(dao, new []{this});
}
